File Location Link: CCC 101N: Computer Programming 1 Laboratory Activity: Programming Basics & Methods

CCC 101N: Computer Programming 1
Laboratory Activity: Programming Basics & Methods
GUIDANCE:
File location
Place all your programs in the Desktop folder for easy access.
Link
Link the Java compiler to the directory where your programs reside. In our case the programs are in the
Desktop folder.
a. Open Command Prompt.
Key +R on the keyboard and type cmd.
b. Navigate to the directory where your programs are placed. In our case we key this DOS command
through the keyboard in the Command Prompt
cd Desktop
It should take us to the Desktop folder.
c. Key this through the keyboard to link the java compiler to the directory
set path = “C:\Program Files\Java\jdk1.7.0_45\bin”
(Important notes: The JDK’s folder name depends on the JDK version. In our case it is “jdk1.7.0_45”. If you
are using a 32 bit version of JDK, it is located in “Program Files (x86)”.)
Compile
To compile the program, key this command in the Command Prompt
javac NameOfOurProgram.java
Running the Program

To test the program, key this command in the Command Prompt
java NameOfOurProgram
For Keyboard Inputs

Java has Scanner and BufferedReader class libraries. These classes are commonly used for console
inputs. They are similar to “cin >>” and “scanf()” of C and C++. In our programming course, we are going to
use the Scanner class.
To use this class, import the library to your program by keying this
import java.util.Scanner;
then instantiate a Scanner object by keying this

Scanner nameOfScanner = new Scanner(System.in);
(Important note: You can change the identifier “nameOfScanner” name to your preferred name.)
nameOfScanner.nextInt() for integer inputs

nameOfScanner.nextLine() or nameOfScanner.next() for String inputs
nameOfScanner.nextDouble() for double inputs
Just search for the complete list of Scanner input methods in the Internet.
For Output or Display

Key this System.out.print(); or System.out.println();
Ex.
int num = 5;
System.out.print(“The number is ” + num);
Default Java Code Environment
/**
* @file Name of the Program (.java)
* @description Provide a description of the program/file
* (what is this file supposed to do)
* @course CCC 101 Section W
* @lab Lab Activity 2
* @date 09/11/2018
* @author YOUR SURNAME, Your First Name
*/
public class NameOfYourProgram

{
public static void main(String[] args)
{
Scanner nameOfYourScanner = new Scanner(System.in);
//This is where you write your code.

//…
//…
}
NOTE: For lab activity 2.1, try running the program, play with the source code and observe its behavior.
Laboratory Activity 2.1 Encode and run this program. Save this program as “TestProgram.java”.
public class TestProgram

{
public static void main(String[] args)

{
Scanner in = new Scanner(System.in);
int firstNum = 0;
int secNum = 0;
int thirdNum = 0;
int sum = 0;
double average = 0;
System.out.println("This program computes the sum and the average of the three (3) numbers.");
System.out.print("Enter the first number: ");
firstNum = in.nextInt();
System.out.print("Enter the second number: ");
secNum = in.nextInt();
System.out.print("Enter the third number: ");
thirdNum = in.nextInt();
sum = computeSum(firstNum, secNum, thirdNum);

average = computeAve(firstNum, secNum, thirdNum);
System.out.println("The sum of the three numbers is: " + sum);

System.out.println("The average of the three numbers is: " + average);
public static int computeSum(int num1, int num2, int num3)

{
int sum;
sum = num1 + num2 + num3;

return sum;
}
public static double computeAve(int num1, int num2, int num3)

{
int ave;
ave = (computeSum(num1,num2,num3) / 3);

return ave;
}
}
Laboratory Activity 2.2
Binary Addition Program
Write a method and name it as addBinary. This method takes two integer parameters, say num1 and num2, and
returns the sum of the two binary numbers.
Write the complete program to test your method. Name your program as BinaryAdditionProgram. Your program
should look like the Sample Dialogs below. Don’t forget to include the header part.
Sample Dialog 1:
This is Binary Addition Program.
Enter the first binary number: 100

Enter the second binary number: 10
The sum of 100 and 10 is 110.
Sample Dialog 2:
This is Binary Addition Program.

The sum of 10 and 101 is 111.
Laboratory Activity 2.3
Binary Subtraction Program
Write a method and name it as subtractBinary. This method takes two integer parameters, say num1 and num2,
and returns the difference of the two binary numbers. Note that for this program, the first number should be greater
than the second number.
Write the complete program to test your method. Name your program as BinarySubtractionProgram. Your
program should look like the Sample Dialogs below. Don’t forget to include the header part.
Sample Dialog 1:
This is Binary Subtraction Program.

The difference of 100 and 10 is 10.
Sample Dialog 2:
This is Binary Subtraction Program.

The difference of 111 and 11 is 100.

What to submit in Edmodo:
1. The TestProgram.java of Laboratory Activity 2.1

2. The BinaryAdditionProgram.java of Laboratory Activity 2.2 and
3. The BinarySubtractionProgram.java of Laboratory Activity 2.3
Note: Please TURN IN your programs. DO NOT post NOR send them as a private message. In addition, don’t forget to
write the header part of your Laboratory Activity 2.1’s code. Apply this in the other Lab Activities as well.
Deadline of submission: September 16, 2018, Sunday, until 12midnight

File Location Link: CCC 101N: Computer Programming 1 Laboratory Activity: Programming Basics & Methods

Uploaded by

Copyright:

Available Formats

File Location Link: CCC 101N: Computer Programming 1 Laboratory Activity: Programming Basics & Methods

Uploaded by

Document Information

Original Title

Copyright

Available Formats

Share this document

Share or Embed Document

Sharing Options

Did you find this document useful?

Is this content inappropriate?

Copyright:

Available Formats

File Location Link: CCC 101N: Computer Programming 1 Laboratory Activity: Programming Basics & Methods

Uploaded by

Copyright:

Available Formats

CCC 101N: Computer Programming 1

Laboratory Activity: Programming Basics & Methods

Key +R on the keyboard and type cmd.

It should take us to the Desktop folder.

set path = “C:\Program Files\Java\jdk1.7.0_45\bin”

Running the Program

For Keyboard Inputs

then instantiate a Scanner object by keying this

nameOfScanner.nextInt() for integer inputs

For Output or Display

public class NameOfYourProgram

//This is where you write your code.

public class TestProgram

public static void main(String[] args)

sum = computeSum(firstNum, secNum, thirdNum);

System.out.println("The sum of the three numbers is: " + sum);

public static int computeSum(int num1, int num2, int num3)

sum = num1 + num2 + num3;

public static double computeAve(int num1, int num2, int num3)

ave = (computeSum(num1,num2,num3) / 3);

Binary Addition Program

This is Binary Addition Program.

Enter the first binary number: 100

The sum of 100 and 10 is 110.

This is Binary Addition Program.

Enter the first binary number: 10

The sum of 10 and 101 is 111.

Laboratory Activity 2.3

Binary Subtraction Program

This is Binary Subtraction Program.

Enter the first binary number: 100

The difference of 100 and 10 is 10.

This is Binary Subtraction Program.

Enter the first binary number: 111

The difference of 111 and 11 is 100.

1. The TestProgram.java of Laboratory Activity 2.1

Deadline of submission: September 16, 2018, Sunday, until 12midnight

You might also like