Write a program (without imports) that prompts the user to enter a double value. This double represents the length of a side of a cube. The program has a method to compute and return the surface area of a cube (6 x side length x side length), another method to compute and return the volume (side length x side length x side length) and a main method to do the rest of the work (prompt the user, call the methods, display the results). Your area and volume methods should throw an exception if the argument (side length) is negative - this is an illegal argument. Your main method should catch this exception and any number format exception if the user tries to enter a String when prompted for the side length. The program should continue (prompt, compute, display) until the user enters a side length of 0 which ends the program. Solution public class Example { /** * @param args */ public static void main(String[] args) { java.util.Scanner scanner = null; try { scanner = new java.util.Scanner(System.in); System.out.print(\"Enter the side of cube :\"); double sideLength = scanner.nextDouble(); System.out.println(\"Surface area of cube :\" + cubeArea(sideLength)); System.out.println(\"Volume of cube :\" + cubeVolume(sideLength)); } catch (NumberFormatException e) { // TODO: handle exception System.out.println(\"Invalid Input\"); } catch (IllegalArgumentException e) { // TODO: handle exception System.out.println(\"Invalid must be positive\"); } } /** * method to return surface area of cube * * @param sideLength * @return */ public static double cubeArea(double sideLength) { if (sideLength < 0) { throw new IllegalArgumentException(); } else { return (6 * sideLength * sideLength); } } /** * method to return volume of cube * * @param sideLength * @return */ public static double cubeVolume(double sideLength) { if (sideLength < 0) { throw new IllegalArgumentException(); } else { return (sideLength * sideLength * sideLength); } } } OUTPUT: Enter the side of cube :3 Surface area of cube :54.0 Volume of cube :27.0 .

1. Write a program (without imports) that prompts the user to enter a double value. This double
represents the length of a side of a cube. The program has a method to compute and return the
surface area of a cube (6 x side length x side length), another method to compute and return the
volume (side length x side length x side length) and a main method to do the rest of the work
(prompt the user, call the methods, display the results). Your area and volume methods should
throw an exception if the argument (side length) is negative - this is an illegal argument. Your
main method should catch this exception and any number format exception if the user tries to
enter a String when prompted for the side length. The program should continue (prompt,
compute, display) until the user enters a side length of 0 which ends the program.
Solution
public class Example {
/**
* @param args
*/
public static void main(String[] args) {
java.util.Scanner scanner = null;
try {
scanner = new java.util.Scanner(System.in);
System.out.print("Enter the side of cube :");
double sideLength = scanner.nextDouble();
System.out.println("Surface area of cube :" + cubeArea(sideLength));
System.out.println("Volume of cube :" + cubeVolume(sideLength));
} catch (NumberFormatException e) {
// TODO: handle exception
System.out.println("Invalid Input");
} catch (IllegalArgumentException e) {
// TODO: handle exception
System.out.println("Invalid must be positive");
}
}

2. /**
* method to return surface area of cube
*
* @param sideLength
* @return
*/
public static double cubeArea(double sideLength) {
if (sideLength < 0) {
throw new IllegalArgumentException();
} else {
return (6 * sideLength * sideLength);
}
}
/**
* method to return volume of cube
*
* @param sideLength
* @return
*/
public static double cubeVolume(double sideLength) {
if (sideLength < 0) {
throw new IllegalArgumentException();
} else {
return (sideLength * sideLength * sideLength);
}
}
}
OUTPUT:
Enter the side of cube :3
Surface area of cube :54.0
Volume of cube :27.0