VISVESVARAYA TECHNOLOGICAL UNIVERSITY

JNANA SANGAMA, BELAGAVI – 590 018, KARNATAKA, INDIA

_________________________________________________________________________________________

LABORATORY MANUAL
OBJECT ORIENTED PROGRAMMING WITH JAVA LABORATORY / 21CSL35
(Effective from the academic year 2021 -2022)

Prepared by
Prof.Ateeq Ahmed
Assistant Professor
Department of Computer Science & Engineering

_________________________________________________________________________________

KNS INSTITUTE OF TECHNOLOGY

Affiliated to Visvesvaraya Technological University, Belagavi and Approved by AICTE, New Delhi
Hegde Nagar-kogilu Road, Thirumenahalli, Yelahanka, Bengaluru-560064
 KNS INSTITUTE OF TECHNOLOGY
Affiliated to Visvesvaraya Technological University, Belagavi and Approved by AICTE, New Delhi
Hegde Nagar-kogilu Road, Thirumenahalli, Yelahanka, Bengaluru-560064

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

_____________________________________________________
Vision and Mission of the Institution

Vision
“To impart quality education to cater the needs of Industries, Business Establishments,
Research and Development Organizations, create Knowledgeable and competent Engineers of
global standard.”

Mission
“To create Industry enabled Engineers manifesting in excellence with extraordinary
progress, to give bright and challenging future for deserving students who are
underprivileged.”

Vision and Mission of the CSE Department

Vision
“Creating Computer Science engineers for all computing solutions as we move towards
our goal we contribute Computer Science engineers for IT solutions.”

Mission
“To create an environment for faculties and students to learn and express their
Knowledge to develop leadership qualities and passion for betterment of society”
 KNS INSTITUTE OF TECHNOLOGY
Affiliated to Visvesvaraya Technological University, Belagavi and Approved by AICTE, New Delhi
Hegde Nagar-kogilu Road, Thirumenahalli, Yelahanka, Bengaluru-560064

DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING

Program Outcomes
a. Engineering Knowledge: Apply knowledge of mathematics, science,
engineering fundamentals and an engineering specialization to the solution of
complex engineering problems.
b. Problem Analysis: Identify, formulate, research literature and analyze complex
engineering problems reaching substantiated conclusions using first principles of
mathematics, natural sciences and engineering sciences
c. Design/ Development of Solutions: Design solutions for complex engineering
problems and design system components or processes that meet specified needs
with appropriate consideration for public health and safety, cultural, societaland
environmental considerations.
d. Conduct investigations of complex problems using research-based
knowledge and research methods including design of experiments, analysis and
interpretation of data and synthesis of information to provide valid conclusions.
e. Modern Tool Usage: Create, select and apply appropriate techniques, resourcesand
modern engineering and IT tools including prediction and modeling to Complex
engineering activities with an under- standing of the limitations.
f. The Engineer and Society: Apply reasoning informed by contextual
knowledge to assess societal, health, safety, legal and cultural issues and the
Consequent responsibilities relevant to professional engineering practice.
g. Environment and Sustainability: Understand the impact of professional
Engineering solutions in societal and environmental contexts and demonstrate
knowledge of and need for sustainable development.
h. Ethics: Apply ethical principles and commit to professional ethics and
Responsibilities and norms of engineering practice.
i. Individual and Team Work: Function effectively as an individual, and as a
member or leader in diverse teams and in multi disciplinary settings.
j. Communication: Communicate effectively on complex engineering activities with
the engineering community and with society at large, such as being able to
comprehend and write effective reports and design documentation, make effective
presentations and give and receive clear instructions.
k. Life-long Learning: Recognize the need for and have the preparation and
ability to engage in independent and life- long learning in the broadest context of
technological change.
l. Project Management and Finance: Demonstrate knowledge and understanding
of engineering and management principles and apply these to
one’s own work, as a member and leader in a team, to manage projects and in Multi
disciplinary environments.
Program Specific Outcomes
m. PSO1: Adapt, Contribute Innovate ideas in the field of Artificial Intelligence and
Machine Learning
PSO2: Enrich the abilities to qualify for Employment, Higher studies and Research in
various domains of Artificial Intelligence and Machine Learning such as Data Science,
n. Computer Vision, Natural Language Processing with ethical values

o. PSO3: Acquire practical proficiency with niche technologies and open source platforms
and become Entrepreneur in the domain of Artificial Intelligence and Machine Learning
 List of Experiments

OBJECT ORIENTED PROGRAMMING WITH JAVA

LABORATORY
Course Code 21CSL35 CIE Marks 50
Teaching Hours/Week (L:T:P: S) 0:0:2:0 SEE Marks 50
Total Hours of Pedagogy 24 Total Marks 100
Credits 1 Exam Hours 03
Course Objectives:

CLO 1. Demonstrate the use of Eclipse/Netbeans IDE to create Java Applications.

CLO 2. Using java programming to develop programs for solving real-world problems.CLO 3.
Reinforce the understanding of basic object-oriented programming concepts.

Note: two hours tutorial is suggested for each laboratory sessions.

Prerequisite
 Students should be familiarized about java installation and setting the java
environment.
 Usage of IDEs like Eclipse/Netbeans should be introduced.

Sl. No. PART A – List of problems for which student should develop program and execute in the
Laboratory
Aim: Introduce the java fundamentals, data types, operators in java
1
Program: Write a java program that prints all real solutions to the quadratic equation ax2+bx+c=0.
Read in a, b, c and use the quadratic formula.
Aim: Demonstrating creation of java classes, objects, constructors, declaration andinitialization of
variables.

Program: Create a Java class called Student with the following details as variables within it.USN
Name
2 Branch
Phone
Write a Java program to create n Student objects and print the USN, Name, Branch, and Phoneof
these objects with suitable headings.

Aim: Discuss the various Decision-making statements, loop constructs in java

Program:
3
A. Write a program to check prime number
B. Write a program for Arithmetic calculator using switch case menu

Aim: Demonstrate the core object-oriented concept of Inheritance, polymorphism

Design a super class called Staff with details as StaffId, Name, Phone, Salary. Extend this class by
4
writing three subclasses namely Teaching (domain, publications), Technical (skills), and Contract
(period). Write a Java program to read and display at least 3 staff objects of all three
categories.
Aim: Introduce concepts of method overloading, constructor overloading, overriding.
5 Program: Write a java program demonstrating Method overloading and Constructoroverloading.

Aim: Introduce the concept of Abstraction, packages.

6 Program: Develop a java application to implement currency converter (Dollar to INR, EURO to
INR, Yen to INR and vice versa), distance converter (meter to KM, miles to KM and vice versa),time
converter (hours to minutes, seconds and vice versa) using packages.
 Aim: Introduction to abstract classes, abstract methods, and Interface in java

7 Program: Write a program to generate the resume. Create 2 Java classes Teacher (data: personal
information, qualification, experience, achievements) and Student (data: personal information, result,
discipline) which implements the java interface Resume with the method
biodata().
Aim: Demonstrate creation of threads using Thread class and Runnable interface, multi- threaded
programming.
8
Program: Write a Java program that implements a multi-thread application that has three
threads. First thread generates a random integer for every 1 second; second thread computes the
square of the number and prints; third thread will print the value of cube of the number.
Aim: Introduce java Collections.

9 Program: Write a program to perform string operations using ArrayList. Write functions for the
following a. Append - add at end b. Insert – add at particular index c. Search d. List all
string starts with given letter.
Aim: Exception handling in java, introduction to throwable class, throw, throws, finally.
10
Program: Write a Java program to read two integers a and b. Compute a/b and print, when b is not
zero. Raise an exception when b is equal to zero.
Aim: Introduce File operations in java.

11 Program:
Write a java program that reads a file name from the user, displays information about
whether the file exists, whether the file is readable, or writable, the type of file and the length of the
file in bytes
Aim: Introduce java Applet, awt, swings.

12 Programs:
Develop an applet that displays a simple message in center of the screen. Develop a simple calculator
using Swings.
PART B – Practical Based Learning
A problem statement for each batch is to be generated in consultation with the co-examiner and
01 student should develop an algorithm, program and execute the program for the given
problem with appropriate outputs.

Course Outcome (Course Skill Set)

At the end of the course the student will be able to:

CO 1. Use Eclipse/NetBeans IDE to design, develop, debug Java Projects.

CO 2. Analyze the necessity for Object Oriented Programming paradigm over structured programmingand
become familiar with the fundamental concepts in OOP.
CO 3. Demonstrate the ability to design and develop java programs, analyze, and interpret object-oriented
data and document results.
CO 4. Apply the concepts of multiprogramming, exception/event handling, abstraction to developrobust
programs.
CO 5. Develop user friendly applications using File I/O and GUI concepts.
Assessment Details (both CIE and SEE)
The weightage of Continuous Internal Evaluation (CIE) is 50% and for Semester End Exam (SEE) is 50%.
The minimum passing mark for the CIE is 40% of the maximum marks (20 marks). A student shallbe deemed
to have satisfied the academic requirements and earned the credits allotted to each course. The student has to
secure not less than 35% (18 Marks out of 50) in the semester-end examination (SEE).
Continuous Internal Evaluation (CIE):
CIE marks for the practical course is 50 Marks.
The split-up of CIE marks for record/ journal and test are in the ratio 60:40.
 Each experiment to be evaluated for conduction with observation sheet and record write-up.
 OOP with Java Lab /21CSL35

Rubrics for the evaluation of the journal/write-up for hardware/software experiments designed by the
faculty who is handling the laboratory session and is made known to students at the beginning of the
practical session.
 Record should contain all the specified experiments in the syllabus and each experiment write-up will
be evaluated for 10 marks.
 Total marks scored by the students are scaled downed to 30 marks (60% of maximum marks).
 Weightage to be given for neatness and submission of record/write-up on time.
 Department shall conduct 02 tests for 100 marks, the first test shall be conducted after the 8 th weekof the
semester and the second test shall be conducted after the 14th week of the semester.
 In each test, test write-up, conduction of experiment, acceptable result, and procedural knowledge will
carry a weightage of 60% and the rest 40% for viva-voce.
 The suitable rubrics can be designed to evaluate each student’s performance and learning ability.
Rubrics suggested in Annexure-II of Regulation book
 The average of 02 tests is scaled down to 20 marks (40% of the maximum marks).
The Sum of scaled-down marks scored in the report write-up/journal and average marks of two tests is the total
CIE marks scored by the student.
Semester End Evaluation (SEE):
 SEE marks for the practical course is 50 Marks.
 SEE shall be conducted jointly by the two examiners of the same institute, examiners are
appointed by the University
 All laboratory experiments are to be included for practical examination.
 (Rubrics) Breakup of marks and the instructions printed on the cover page of the answer scriptto be
strictly adhered to by the examiners. OR based on the course requirement evaluation rubrics shall be
decided jointly by examiners.
 Students can pick one question (experiment) from the questions lot prepared by the internal
/external examiners jointly.
 Evaluation of test write-up/ conduction procedure and result/viva will be conducted jointly by
examiners.
 General rubrics suggested for SEE are mentioned here, writeup-20%, Conduction procedure and result
in -60%, Viva-voce 20% of maximum marks. SEE for practical shall be evaluated for 100 marks and
scored marks shall be scaled down to 50 marks (however, based on course type, rubrics shall be
decided by the examiners)
 Students can pick one experiment from the questions lot of PART A with equal choice to all the students
in a batch. For PART B examiners should frame a question for each batch, student should develop an
algorithm, program, execute and demonstrate the results with appropriate output for the given problem.
 Weightage of marks for PART A is 80% and for PART B is 20%. General rubrics suggested to be followed
for part A and part B.
 Change of experiment is allowed only once and Marks allotted to the procedure part to bemade
zero (Not allowed for Part B).
 The duration of SEE is 03 hours
 Rubrics suggested in Annexure-II of Regulation book

Suggested Learning Resources:

1. E Balagurusamy, Programming with Java, Graw Hill, 6th Edition, 2019.
2. Herbert Schildt, C: Java the Complete Reference, McGraw Hill, 11th Edition, 2020

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 6 2022-23

 OOP with Java Lab /21CSL35

PROGRAM :1
1. Write a java program that prints all real solutions to the quadratic equation ax2+bx+c=0. Read in a,
b, c and use the quadratic formula.

Aim: Introduce the java fundamentals, data types, operators in java

PROGRAM :

import java.util.Scanner;
public class Quadratic
{
public static void main(String[] args)
{

int a, b, c; // coefficients
double root1, root2;
System.out.println("Enter the coefficients");
Scanner in=new Scanner(System.in);
a = in.nextInt();
b = in.nextInt();
c = in.nextInt();

// calculate the determinant (b2 - 4ac)

double d = b * b - 4 * a * c;
System.out.println("Determinant="+d);
if (d > 0) // check if determinant is greater than 0
{

// two real and distinct roots

root1 = (-b + Math.sqrt(d)) / (2 * a);
root2 = (-b - Math.sqrt(d)) / (2 * a);
System.out.println("The roots are real and distinct");
System.out.format("root1 = %.2f and root2 = %.2f", root1, root2);
}

else if (d == 0) // check if determinant is equal to 0

{

// two real and equal roots

// determinant is equal to 0
// so -b + 0 == -b
root1 = root2 = -b / (2 * a);
System.out.println("The roots are real and equal");
System.out.format("root1 = root2 = %.2f;", root1);
}

else // if determinant is less than zero

{

// roots are complex number and distinct

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 7 2022-23

 OOP with Java Lab /21CSL35

double real = -b / (2 * a);

double imaginary = Math.sqrt(-d) / (2 * a);
System.out.println("The roots are imaginary");
System.out.format("root1 = %.2f+%.2fi", real, imaginary);
System.out.format("\nroot2 = %.2f-%.2fi", real, imaginary);
}
}
}

OUT PUT:

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 8 2022-23

 OOP with Java Lab /21CSL35

PROGRAM :2

2. Create a Java class called Student with the following details as variables within it.
USN
Name
Branch
Phone
Write a Java program to create n Student objects and print the USN, Name, Branch, and Phoneof
these objects with suitable headings.

Aim: Demonstrating creation of java classes, objects, constructors, declaration andinitialization of

variables.

PROGRAM :

import java.util.*;
public class Student
{
String usn,name,branch;
long phone;

void insertStudent(String reg,String nm, String br,long ph)

{
usn=reg;
name=nm;
branch=br;
phone=ph;
}

void displayStudent()
{
System.out.println("**********************");
System.out.println("USN= "+usn);
System.out.println("NAME= "+name);
System.out.println("BRANCH= "+branch);
System.out.println("PHONE NUMBER= "+phone);
System.out.println("**********************");
}

public static void main(String args[])

{
Student st[]=new Student [100];
Scanner ip=new Scanner(System.in);
System.out.println("Enter the number of students");
int n=ip.nextInt();

for(int i=0;i<n;i++)
st[i]=new Student();
for(int j=0;j<n;j++)
{
Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 9 2022-23
 OOP with Java Lab /21CSL35

System.out.println("Enter the Usn,Name,Branch,Phone Number");

String usn=ip.next();
String name=ip.next();
String branch=ip.next();
long phone=ip.nextLong();
st[j].insertStudent(usn,name,branch,phone);

}
for( int m=0;m<n;m++)
{
System.out.format("Student %d details are\n",m+1);
st[m].displayStudent();
}

}
}

OUTPUT:

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 10 2022-23

 OOP with Java Lab /21CSL35

PROGRAM :3

3. A. Write a program to check prime number

Aim: Discuss the various Decision-making statements, loop constructs in java

PROGRAM :3A

import java.util.Scanner;
class Prime
{
public static void main(String args[])
{
int i,n,flag=0;
System.out.println("Enter the number");
Scanner inp=new Scanner(System.in);
n=inp.nextInt();
for(i=2;i<n;i++)
{
if(n%i==0)
{
flag=1;
break;
}
}
if(flag==1)
System.out.println("The given number is Not a Prime");
else
System.out.println("The given number is Prime");
}
}

OUTPUT:

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 11 2022-23

 OOP with Java Lab /21CSL35

PROGRAM :3B

3. B.Write a program for Arithmetic calculator using switch case menu

import java.util.*;
class Switch
{
public static void main(String[] args)
{
Scanner inp = new Scanner(System.in);
System.out.println("Enter the Operator (+,-,*,/) : ");
char operator = inp.next().charAt(0);
System.out.println("Enter the First Operand : ");
double first = inp.nextDouble();
System.out.println("Enter the Second Operand : ");
double second = inp.nextDouble();
double result = 0;
switch(operator)
{
case '+':
result = first + second;
System.out.println("The Result is : "+first+" "+operator+" "+second+" = "+result);
break;
case '-':
result = first - second;
System.out.println("The Result is : \n "+first+" "+operator+" "+second+" = "+result);
break;
case '*':
result = first * second;
System.out.println("The Result is : "+first+" "+operator+" "+second+" = "+result);
break;
case '/':
result = first / second;
System.out.println("The Result is : \n "+first+" "+operator+" "+second+" = "+result);
break;
default :
System.out.println("Invalid Operator");
break;
}
}
}

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 12 2022-23

 OOP with Java Lab /21CSL35

OUTPUT:

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 13 2022-23

 OOP with Java Lab /21CSL35

PROGRAM :4

4. Design a super class called Staff with details as StaffId, Name, Phone, Salary. Extend this class
by writing three subclasses namely Teaching (domain, publications), Technical (skills), and
Contract (period). Write a Java program to read and display at least 3 staff objects of all three
categories.

Aim: Demonstrate the core object-oriented concept of Inheritance, polymorphism

PROGRAM:

import java.util.Scanner;
class Staff
{
String staffId;
String name;
long phone;
float salary;
public void accept()
{
Scanner scanner = new Scanner(System.in);
System.out.print("Enter Staff Id: ");
staffId = scanner.next();
System.out.print("Enter Name: ");
name = scanner.next();
System.out.print("Enter Phone: ");
phone = scanner.nextLong();
System.out.print("Enter Salary: ");
salary = scanner.nextFloat();

}
public void display()
{
System.out.println("Staff Id: " + staffId);
System.out.println("Name: " + name);
System.out.println("Phone: " + phone);
System.out.println("Salary: " + salary);
}
}
class Teaching extends Staff
{
String domain;
int n;
public void accept()
{
super.accept();
Scanner scanner = new Scanner(System.in);
System.out.print("Enter Domain: ");
domain = scanner.next();
System.out.print("Enter Number of Publications: ");
Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 14 2022-23
 OOP with Java Lab /21CSL35

n = scanner.nextInt();
System.out.println("\n");
}
public void display()
{
super.display();
System.out.println("Domain: " + domain);
System.out.println("Publications:"+n);
System.out.println("\n");
}
}
class Technical extends Staff
{
String skill;
public void accept()
{
super.accept();
Scanner scanner = new Scanner(System.in);
System.out.print("Enter technical Skills: ");
skill = scanner.nextLine();
System.out.println("\n");
}
public void display()
{
super.display();
System.out.println("Technical Skills: " + skill);
System.out.println("\n");
}

}
class Contract extends Staff
{
int period;
public void accept()
{
super.accept();
Scanner scanner = new Scanner(System.in);
System.out.print("Enter Period: ");
period = scanner.nextInt();
System.out.println("\n");
}
public void display()
{
super.display();
System.out.println("Contract Period: " + period);
}
}
class Four
{
public static void main(String[] args)
{

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 15 2022-23

 OOP with Java Lab /21CSL35

Teaching teaching = new Teaching();

System.out.println("Enter the details of Teaching Staff");
teaching.accept();

Technical technical = new Technical();

System.out.println("Enter the details of Technical Staff");
technical.accept();

Contract contract = new Contract();

System.out.println("Enter the details of Contract Staff");
contract.accept();

System.out.println("The details of Teaching Staff");

teaching.display();
System.out.println("The details of Technical Staff");
technical.display();
System.out.println("The details of Contract Staff");
contract.display();
}
}

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 16 2022-23

 OOP with Java Lab /21CSL35

OUTPUT :

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 17 2022-23

 OOP with Java Lab /21CSL35

PROGRAM :5

5. Write a java program demonstrating Method overloading and Constructor overloading.

Aim: Introduce concepts of method overloading, constructor overloading.

PROGRAM:5A

Demonstrating Method overloading

class MOverloading
{
//adding two integer numbers
int add(int a, int b)
{
int sum = a+b;
return sum;
}
//adding three integer numbers
int add(int a, int b, int c)
{
int sum = a+b+c;
return sum;
}
float add(float a, float b)
{
float sum = a+b;
return sum;
}
}
class MOverload
{
public static void main(String args[])
{
MOverloading obj = new MOverloading();
int s1=obj.add(10, 20);
int s2=obj.add(10, 20, 30);
float s3=obj.add(2.2f,2.2f);
System.out.println("Method Overload Sum1="+s1);
System.out.println("Method Overload Sum2="+s2);
System.out.println("Method Overload Sum3="+s3);
}
}

OUTPUT:

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 18 2022-23

 OOP with Java Lab /21CSL35

PROGRAM:5B

Constructor Overloading
public class Constructor
{
int id;
String name;
Constructor()
{
System.out.println("This is Default constructor");
System.out.println("Student Id : "+id + "\nStudent Name : "+name);
}
Constructor(int i, String n)
{
System.out.println("This is Parameterized Constructor:");
id = i;
name = n;
System.out.println("Student Id : "+id + "\nStudent Name : "+name);
}
public static void main(String[] args)
{
Constructor s = new Constructor();
Constructor student = new Constructor(10, "David");
}
}

OUTPUT:

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 19 2022-23

 OOP with Java Lab /21CSL35

PROGRAM :6

6. Develop a java application to implement currency converter (Dollar to INR, EURO to INR,
Yen to INR and vice versa), distance converter (meter to KM, miles to KM and vice versa),
time converter (hours to minutes, seconds and vice versa) using packages.

Aim: Introduce the concept of Abstraction, packages.

PROGRAM:

CurrencyC.java

package cc;
import java.util.*;
public class CurrencyC
{
double inr,usd;
double euro,yen;
Scanner in=new Scanner(System.in);
public void dollartorupee()
{
System.out.println("Enter dollars to convert into Rupees:");
usd=in.nextInt();
inr=usd*81.83;
System.out.println("Dollar ="+usd+" equal to INR="+inr);
System.out.println("\n");
}
public void rupeetodollar()
{
System.out.println("Enter Rupee to convert into Dollars:");
inr=in.nextInt();
usd=inr/81.83;
System.out.println("Rupee ="+inr+"equal to Dollars="+usd);
}
public void eurotorupee()
{
System.out.println("Enter Euro to convert into Rupees:");
euro=in.nextInt();
inr=euro*79.06;
System.out.println("Euro ="+euro+" equal to INR="+inr);
System.out.println("\n");
}
public void rupeetoeuro()
{
System.out.println("Enter Rupees to convert into Euro:");
inr=in.nextInt();
euro=(inr/79.06);
System.out.println("Rupee ="+inr +"equal to Euro="+euro);
System.out.println("\n");
}

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 20 2022-23

 OOP with Java Lab /21CSL35

public void yentoruppe()

{
System.out.println("Enter Yen to convert into Rupees:");
yen=in.nextInt();
inr=yen*0.57;
System.out.println("Yen ="+yen+" equal to INR="+inr);
System.out.println("\n");
}
public void ruppetoyen()
{
System.out.println("Enter Rupees to convert into Yen:");
inr=in.nextInt();
yen=(inr/0.57);
System.out.println("INR="+inr +"equal to YEN"+yen);
System.out.println("\n");
}
}

DistaceC.Java

package dc;
import java.util.*;
public class DistanceC
{
double km,m,miles;
Scanner in=new Scanner(System.in);
public void mtokm()
{
System.out.println("Enter the distance in meter");
m=in.nextDouble();
km=(m/1000);
System.out.println(m+"m" +" is equal to "+km+"km");
System.out.println("\n");
}
public void kmtom()
{
System.out.println("Enter the distance in Kilometer");
km=in.nextDouble();
m=km*1000;
System.out.println(km+"km" +" is equal to "+m+"m");
System.out.println("\n");
}
public void milestokm()
{
System.out.println("Enter the distance in miles");
miles=in.nextDouble();
km=(miles*1.60934);
System.out.println(miles+"miles" +" is equal to "+km+"km");
System.out.println("\n");
}

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 21 2022-23

 OOP with Java Lab /21CSL35

public void kmtomiles()

{
System.out.println("Enter the distance in km");
km=in.nextDouble();
miles=(km*0.621371);
System.out.println(km+"km" +" is equal to "+miles+"miles");
}
}

TimeC.java

package tc;
import java.util.*;
public class TimeC
{
int hours,seconds,minutes;
Scanner in = new Scanner(System.in);
public void hourstominutes()
{
System.out.println("Enter the no of Hours to convert into minutes");
hours=in.nextInt();
minutes=(hours*60);
System.out.println("Minutes: " + minutes);
}
public void minutestohours()
{
System.out.println("Enter the no of Minutes to convert into Hours");
minutes=in.nextInt();
hours=minutes/60;
System.out.println("Hours: " + hours);
}
public void hourstoseconds()
{
System.out.println("Enter the no of Hours to convert into Seconds");
hours=in.nextInt();
seconds=(hours*3600);
System.out.println("Seconds: " + seconds);
}
public void secondstohours()
{
System.out.println("Enter the no of Seconds to convert into Hours");
seconds=in.nextInt();
hours=seconds/3600;
System.out.println(seconds+"seconds"+ " is equal to "+hours+"hour");
}
}

Main Class

import cc.*;
import dc.*;

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 22 2022-23

 OOP with Java Lab /21CSL35

import tc.*;
public class Main
{
public static void main(String args[])
{
CurrencyC obj=new CurrencyC();
DistanceC obj1=new DistanceC();
TimeC obj2=new TimeC();

obj.dollartorupee();
obj.rupeetodollar();

obj.eurotorupee();
obj.rupeetoeuro();

obj.yentoruppe();
obj.ruppetoyen();

obj1.mtokm();
obj1.kmtom();

obj1.milestokm();
obj1.kmtomiles();

obj2.hourstominutes();
obj2.minutestohours();

obj2.hourstoseconds();
obj2.secondstohours();
}
}

OUTPUT:
Enter dollars to convert into Rupees:1
Dollar =1.0 equal to INR=81.83

Enter Rupee to convert into Dollars: 80

Rupee =80.0equal to Dollars=0.977636563607479

Enter the distance in meter :1000

1000.0m is equal to 1.0km

Enter the distance in Kilometre :1

1.0km is equal to 1000.0m

Enter the no of Hours to convert into minutes: 1

Minutes: 60

Enter the no of Minutes to convert into Hours: 60

Hours: 1

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 23 2022-23

 OOP with Java Lab /21CSL35

PROGRAM :7

7. Write a program to generate the resume. Create 2 Java classes Teacher (data: personal
information, qualification, experience, achievements) and Student (data: personal information,
result, discipline) which implements the java interface Resume with the method biodata().

Aim: Introduction to abstract classes, abstract methods, and Interface in java

PROGRAM:

interface Resume
{
void biodata();
}
class Teacher implements Resume
{
String name,qualification,achievements;
float experience;
public void biodata()
{
name="Imran Ulla Khan";
qualification="M.Tech";
achievements="Q1 publication";
experience=14.8f;
System.out.println("Teacher Resume");
System.out.println("Name : " +name);
System.out.println("Qualification : "+qualification);
System.out.println("Achievements : "+achievements);
System.out.println("Experience : "+experience);
}
}
class Student implements Resume
{
String name,discipline;
float result;
public void biodata()
{
name="Rahul Sharma";
result=9.8f;
discipline="Computer Science and Engineering";
System.out.println("");
System.out.println("Student Resume");
System.out.println("Name : " +name);
System.out.println("Result : "+result+" cgpa");
System.out.println("Discipline : "+discipline);
}
}

public class InterfaceP

{
Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 24 2022-23
 OOP with Java Lab /21CSL35

public static void main(String[] args)

{
Teacher obj1=new Teacher();
obj1.biodata();

Student obj2=new Student();

obj2.biodata();
}
}

OUTPUT:

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 25 2022-23

 OOP with Java Lab /21CSL35

PROGRAM :8

8. Write a Java program that implements a multi-thread application that has three threads. First
thread generates a random integer for every 1 second; second thread computesthe square of the
number and prints; third thread will print the value of cube of the number.

Aim: Demonstrate creation of threads using Thread class and Runnable interface, multi-
threaded programming.

PROGRAM :

import java.util.Random;
class Square extends Thread
{
int x;
Square(int n)
{
x = n;
}
public void run()
{
int sqr = x * x;
System.out.println("Square of " + x + " = " + sqr );
}
}

class Cube extends Thread

{
int x;
Cube(int n)
{
x = n;
}
public void run()
{
int cub = x * x * x;
System.out.println("Cube of " + x + " = " + cub );
}
}
class Rnumber extends Thread
{
public void run()
{
Random random = new Random();
for(int i =0; i<5; i++)
{
int randomInteger = random.nextInt(10);
System.out.println("Random Integer generated : " + randomInteger);
Square s = new Square(randomInteger);
Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 26 2022-23
 OOP with Java Lab /21CSL35

s.start();
Cube c = new Cube(randomInteger);
c.start();
try
{
Thread.sleep(1000);
}
catch (InterruptedException ex)
{
System.out.println(ex);
}
}
}
}

public class ThreadP

{
public static void main(String[] args)
{
Rnumber n = new Rnumber();
n.start();

}
}

OUTPUT:

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 27 2022-23

 OOP with Java Lab /21CSL35

PROGRAM :9

9. Write a program to perform string operations using ArrayList. Write functions for the
following a. Append - add at end b. Insert – add at particular index c. Search d. List all string
starts with given letter.

Aim: Introduce java Collections.

import java.util.*;
public class ArrayL
{
ArrayList<String> list=new ArrayList<String>(); //Creating arraylist
public void arraydisplay()
{
list.add("CSE");//Adding object in arraylist
list.add("ISE");
list.add("ME");
System.out.println("ArrayList element are");
System.out.println(list);
System.out.println("");
}
public void appendatend()
{
System.out.println("Enter the element to append at end");
Scanner scob1=new Scanner(System.in);
String ele=scob1.next();
list.add(ele);
System.out.println(list);
System.out.println("");
}
public void insertatpos()
{
System.out.println("Enter the position and element to insert");
Scanner scob1=new Scanner(System.in);
int posind=scob1.nextInt();
String ele=scob1.next();
list.add(posind,ele);
System.out.println(list);
System.out.println("");
}
public void searchele()
{
System.out.println("Enter the Array element to search");
Scanner scobj=new Scanner(System.in);
String arele=scobj.next();
int in=list.indexOf(arele);
if(in==-1)
{
System.out.println("Element not found");
}

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 28 2022-23

 OOP with Java Lab /21CSL35

else
{
System.out.println("Element found at "+in);
}
}
void print()
{
Scanner nip=new Scanner(System.in);
System.out.println("Enter the starting charecter to print strings");
char inputc=nip.next().charAt(0);
String strc=Character.toString(inputc);
System.out.println("String starting with character "+strc);
for(int i=0;i<list.size();i++)
{
if(list.get(i).startsWith(strc))
{
System.out.println(list.get(i));
}
}
}
public static void main(String args[])
{
ArrayL obj=new ArrayL();
obj.arraydisplay();
obj.appendatend();
obj.insertatpos();
obj.searchele();
obj.print();
}
}

OUTPUT:

Prof. Ateeq Ahmed, Dept. of CSE, KNSIT 29 2022-23

 OOP with Java Lab /21CSL35

PROGRAM :30

10. Write a Java program to read two integers a and b. Compute a/b and print, when bis not zero.
Raise an exception when b is equal to zero.

Aim: Exception handling in java, introduction to throwable class, throw, throws, finally

import java.util.*;
public class TryP
{
int c;
void div(int a,int b)
{
try
{
c=a/b;
System.out.println("Result="+c);
}
catch(ArithmeticException e)
{
System.out.println("Cannot divide by zero");
}
}
public static void main(String args[])
{
TryP obj=new TryP();
Scanner in=new Scanner(System.in);
System.out.println("Enter the values of a and b");
int no1=in.nextInt();
int no2=in.nextInt();
obj.div(no1,no2);
}
}

OUTPUT:

Prof. Imran Ulla Khan, Dept. of CSE,SKIT 30 2022-23

 OOP with Java Lab /21CSL35

PROGRAM :31

11. Write a java program that reads a file name from the user, displays information about whether
the file exists, whether the file is readable, or writable, the type of file and the length of the file
in bytes

Aim: Introduce File operations in java.

import java.io.File;
import java.util.Scanner;
class FileP
{
public static void main(String args[ ])
{
Scanner obj=new Scanner(System.in);
String fname=obj.next();
File f1 = new File(fname);
System.out.println("File Name: " + f1.getName());
f1.setWritable(false);
System.out.println(f1.exists() ? "File exists" : "File does not exist");
System.out.println(f1.canWrite() ? "File is writeable" : "File is not writeable");
System.out.println(f1.canRead() ? "File is readable" : "File is not readable");
String fileName = f1.toString();
int index = fileName.lastIndexOf('.');
if(index > 0)
{
String type = fileName.substring(index + 1);
System.out.println("File type is " + type);
}
else
{
System.out.println("File doesn't have type");
}
System.out.println("File size: " + f1.length() + " Bytes");
}
}

OUTPUT:

Prof. Imran Ulla Khan, Dept. of CSE,SKIT 31 2022-23

 OOP with Java Lab /21CSL35

PROGRAM :12
12. A. Develop an applet that displays a simple message in center of the screen.

Aim: Introduce java Applet, awt, swings.

PROGRAM:

import java.applet.Applet;
import java.awt.Graphics;
/*
<applet code="AppletP.class" width="300" height="300">
</applet>
*/
public class AppletP extends Applet
{
public void paint(Graphics g)
{
g.drawString("Welcome to applet",100,150);
}
}

OUTPUT:

Prof. Imran Ulla Khan, Dept. of CSE,SKIT 32 2022-23

 OOP with Java Lab /21CSL35

12. B. Develop a simple calculator using Swings.

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

class Calculator implements ActionListener

{
JFrame frame; //Creating object of JFrame class
JTextField t;
JButton b0,b1,b2,b3,b4,b5,b6,b7,b8,b9,bdot,badd,bmul,bsub,bdiv,beq,bclr;

static double a=0,b=0,res=0;

static int op=0;

public void Display()

{
frame=new JFrame();
frame.setTitle("IUK Calculator"); //Title of the JFrame
frame.setSize(225,300); //Calculator Size
frame.setLayout(null); //Setting Layout
frame.setBackground(Color.black); //Setting Background Color
frame.setResizable(true); //window resizing
frame.setVisible(true); //Setting window's visibility
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//Setting default close
operation

t=new JTextField();
t.setBounds(30,10,165,35);

b0=new JButton("0");
b0.setBounds(30,50,45,40);
b1=new JButton("1");
b1.setBounds(70,50,45,40);
b2=new JButton("2");
b2.setBounds(110,50,45,40);
b3=new JButton("3");
b3.setBounds(150,50,45,40);

b4=new JButton("4");
b4.setBounds(30,90,45,40);
b5=new JButton("5");
b5.setBounds(70,90,45,40);
b6=new JButton("6");
b6.setBounds(110,90,45,40);
b7=new JButton("7");
b7.setBounds(150,90,45,40);

b8=new JButton("8");

Prof. Imran Ulla Khan, Dept. of CSE,SKIT 33 2022-23

 OOP with Java Lab /21CSL35

b8.setBounds(30,130,45,40);
b9=new JButton("9");
b9.setBounds(70,130,45,40);
bdot=new JButton(".");
bdot.setBounds(110,130,45,40);
badd=new JButton("+");
badd.setBounds(150,130,45,40);

bsub=new JButton("-");
bsub.setBounds(30,170,45,40);
bmul=new JButton("*");
bmul.setBounds(70,170,45,40);
bdiv=new JButton("/");
bdiv.setBounds(110,170,45,40);
beq=new JButton("=");
beq.setBounds(150,170,45,40);

bclr=new JButton("CLR");
bclr.setBounds(30,210,165,40);

frame.add(t);
frame.add(b0);
frame.add(b1);
frame.add(b2);
frame.add(b3);
frame.add(b4);
frame.add(b5);
frame.add(b6);
frame.add(b7);
frame.add(b8);
frame.add(b9);
frame.add(bdot);
frame.add(badd);
frame.add(bsub);
frame.add(bmul);
frame.add(bdiv);
frame.add(beq);
frame.add(bclr);

b0.addActionListener(this);
b1.addActionListener(this);
b2.addActionListener(this);
b3.addActionListener(this);
b4.addActionListener(this);
b5.addActionListener(this);
b6.addActionListener(this);
b7.addActionListener(this);
b8.addActionListener(this);
b9.addActionListener(this);
badd.addActionListener(this);
bsub.addActionListener(this);

Prof. Imran Ulla Khan, Dept. of CSE,SKIT 34 2022-23

 OOP with Java Lab /21CSL35

bmul.addActionListener(this);
bdiv.addActionListener(this);
bdot.addActionListener(this);
beq.addActionListener(this);
bclr.addActionListener(this);

}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==bclr)
{
t.setText("");
}
if(e.getSource()==b0)
{
t.setText(t.getText().concat("0"));
}
if(e.getSource()==b1)
{
t.setText(t.getText().concat("1"));
}
if(e.getSource()==b2)
{
t.setText(t.getText().concat("2"));
}
if(e.getSource()==b3)
{
t.setText(t.getText().concat("3"));
}
if(e.getSource()==b4)
{
t.setText(t.getText().concat("4"));
}
if(e.getSource()==b5)
{
t.setText(t.getText().concat("5"));
}
if(e.getSource()==b6)
{
t.setText(t.getText().concat("6"));
}
if(e.getSource()==b7)
{
t.setText(t.getText().concat("7"));
}
if(e.getSource()==b8)
{
t.setText(t.getText().concat("8"));
}
if(e.getSource()==b9)
{

Prof. Imran Ulla Khan, Dept. of CSE,SKIT 35 2022-23

 OOP with Java Lab /21CSL35

t.setText(t.getText().concat("9"));
}
if(e.getSource()==bdot)
{
t.setText(t.getText().concat("."));
}
if(e.getSource()==badd)
{
a=Double.parseDouble(t.getText());
op=1;
t.setText("");
}
if(e.getSource()==bsub)
{
a=Double.parseDouble(t.getText());
op=2;
t.setText("");
}
if(e.getSource()==bmul)
{
a=Double.parseDouble(t.getText());
op=3;
t.setText("");
}
if(e.getSource()==bdiv)
{
a=Double.parseDouble(t.getText());
op=4;
t.setText("");
}
if(e.getSource()==beq)
{
b=Double.parseDouble(t.getText());
switch(op)
{
case 1:res=a+b;
break;
case 2:res=a-b;
break;
case 3:res=a*b;
break;
case 4:res=a/b;
break;
}
t.setText(""+res);
}
}
}

public class CalculatorP

{

Prof. Imran Ulla Khan, Dept. of CSE,SKIT 36 2022-23

 OOP with Java Lab /21CSL35

public static void main(String[] args)

{
Calculator obj=new Calculator();
obj.Display();
}
}

OUTPUT:

Prof. Imran Ulla Khan, Dept. of CSE,SKIT 37 2022-23