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Thread: how to go back in Menu when i choose [Y/N] While - Switch Code

  1. #1
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    Post how to go back in Menu when i choose [Y/N] While - Switch Code

    import java.util.Scanner;

    public class DecimalMenu{

    public static void main(String[]args){
    Scanner scan = new Scanner(System.in);
    int num1;
    String decision;

    System.out.println("DECIMAL MENU");
    System.out.println("[1]Decimal to Binary");
    System.out.println("[2]Decimal to Octal ");
    System.out.println("[3]Decimal to Hexadecimal");
    System.out.println("[4]Back to Main Menu");

    Scanner myScanner=new Scanner(System.in);
    System.out.println("Enter Your Choice: ");
    num1=scan.nextInt();
    boolean yn = true;
    while(yn)
    {

    if(num1==1){

    System.out.print("Enter a Decimal number : ");
    String decimal=myScanner.nextLine();
    int num=Integer.parseInt(decimal,10);
    String binary=Integer.toBinaryString(num);
    System.out.println("Binary value is : "+binary);
    }
    if(num1==2){

    System.out.print("Enter a Decimal number : ");
    String decimal=myScanner.nextLine();
    int num=Integer.parseInt(decimal,10);
    String octal=Integer.toOctalString(num);
    System.out.println("Octal value is : "+octal);
    }
    if(num1==3){

    System.out.print("Enter a Decimal number : ");
    String decimal=myScanner.nextLine();
    int num=Integer.parseInt(decimal,10);
    String hexa=Integer.toHexString(num);
    System.out.println("Hexadecimal value is : "+hexa);
    }
    if(num1==4){

    }
    System.out.println("INPUT ANOTHER [Y/N]: ");
    decision = myScanner.nextLine();


    switch(decision)
    {
    case "Y":
    yn = true;
    break;
    }
    switch(decision)
    {
    case "N":
    yn = true;
    break;

    }
    }
    }
    }

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: how to go back in Menu when i choose [Y/N] While - Switch Code

    Please edit your post and wrap your code with code tags:

    [code]
    **YOUR CODE GOES HERE**
    [/code]

    to get highlighting and preserve formatting.

    Also make sure the code is properly formatted and indented to show nesting logic. The ending }s should NOT be in the same column. A pair of {}s should be in the same column.

    What happens when the code is executed? I see a while loop for going back. Is there a problem with it?
    If you don't understand my answer, don't ignore it, ask a question.

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