Java program to convert degrees to radians

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Java program to convert degrees to radians

Write a Java program to convert degrees to radians and vice versa. We can convert degrees to radians by multiplying with the conversion factor:

$\huge \pi /180$

Mathematical Formulas

Radians = Degrees * $\huge (\pi / 180)$

Degrees = Radians* $\huge (180/\pi )$

Java Program to convert degrees to radians

import java.util.Scanner;

/*
 * Java Demo program to convert degrees to radians
 * and vice versa.
 */
public class DegreesToRadiansDemo {
 //Main method
 public static void main(String[] args) {
 int menuChoice=1;
 Scanner keyboard=new Scanner(System.in);
 while(menuChoice!=3) {
 System.out.println("Program Menu");
 System.out.println("..................................");
 System.out.println("1.Convert Degrees to Radians");
 System.out.println("2.Convert Radians to Degrees");
 System.out.println("3.Quit the Program.");
 System.out.println("..................................");

 System.out.print("Enter the menu choice :=");
 menuChoice = keyboard.nextInt();
 if(menuChoice < 1 || menuChoice > 3) {
 System.out.println("Invalid Choice Please Try again");
 continue;
 }
 if(menuChoice==1) {
 System.out.print("Enter Degrees to convert:=");
 double degrees=keyboard.nextDouble();
 double radians=degrees*Math.PI/180;
 System.out.println("Degrees " + degrees + 
" = Radians " + radians);
 }
 if(menuChoice==2) {
 System.out.print("Enter Radians to convert:=");
 double radians=keyboard.nextDouble();
 double degrees=radians*180/Math.PI;
 System.out.println("Radians " + radians + 
" = Degrees " + degrees);
 }
 if(menuChoice==3) {
 System.out.println("Program Exit -> Goodbye!");
 }
 }
 }
}

Sample Output

Program Menu
…………………………….
1.Convert Degrees to Radians
2.Convert Radians to Degrees
3.Quit the Program.
…………………………….
Enter the menu choice :=1
Enter Degrees to convert:=180
Degrees 180.0 = Radians 3.141592653589793
Program Menu
…………………………….
1.Convert Degrees to Radians
2.Convert Radians to Degrees
3.Quit the Program.
…………………………….
Enter the menu choice :=2
Enter Radians to convert:=1.57
Radians 1.57 = Degrees 89.95437383553926
Program Menu
…………………………….
1.Convert Degrees to Radians
2.Convert Radians to Degrees
3.Quit the Program.
…………………………….
Enter the menu choice :=4
Invalid Choice Please Try again
Program Menu
…………………………….
1.Convert Degrees to Radians
2.Convert Radians to Degrees
3.Quit the Program.
…………………………….
Enter the menu choice :=3
Program Exit -> Goodbye!