how to stop While-Do Loop?

Question

the System.out.print("\n\n\t\t Do you want to see the next record ? [y/n]"); keeps repeating and repeating how can i stop it when the Records becomes 0.

case 3: //Previous
    if (recno!=0) {
        String pre;

        System.out.print("\n\n\t\t\t\t   Previous Record");
        System.out.print("\n\n\t\t\t    Employee Number: EMP-"+EmpNo[recno]);
        System.out.print("\n\t\t\t    Employee Name: "+EmpName[recno]);
        System.out.print("\n\t\t\t    Salary: "+Salary[recno]);
        System.out.print("\n\t_________________________________________________________________");

        do {
            System.out.print("\n\n\t\t  Do you want to see the next record ? [y/n]");
            pre = reader.readLine();

            if(pre.equals("y")) {
                recno--;
                System.out.print("\n\n\t\t\t    Employee Number: EMP-"+EmpNo[recno]);
                System.out.print("\n\t\t\t    Employee Name: "+EmpName[recno]);
                System.out.print("\n\t\t\t    Salary: "+Salary[recno]);
            }

            menu = display.charAt(0);
            System.out.print("\n\t_________________________________________________________________");
        } while(menu=='n');

        System.out.println("Thank You for Using this Program!");
    }
    else {
        System.out.print("\n\n\t\t\t\tRecord Not Found!");
    }

break;

please prettify your code. it's indented too much to the right. thnx — Caffeinated, Aug 07 '14 at 16:20
possible duplicate of [Breaking out of nested loops in Java](http://stackoverflow.com/questions/886955/breaking-out-of-nested-loops-in-java) — rajah9, Aug 07 '14 at 16:22
@jhobbie There's a `while` there, it's just way over to the right where it's hard to find. It took me a ... ummm, *while* to find it too. — ajb, Aug 07 '14 at 16:24
You need to show more code snippet like What is `menu` declared as variable? and what is `display`? — Smit, Aug 07 '14 at 16:28

score 1 · Accepted Answer · answered Aug 07 '14 at 16:20

1

To stop the loop use if (condition) break; with the proper condition; put this code in the proper place inside the loop.

answered Aug 07 '14 at 16:20

peter.petrov

38,363
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The OP's code is inside a `switch`. So you'd need to make a labelled thingy to break out into. – C. K. Young Aug 07 '14 at 16:21
@ChrisJester-Young No, OP has a do-while inside the switch, this is how I understood it at least. – peter.petrov Aug 07 '14 at 16:21
Ah, I thought they wanted to break out of the switch itself; perhaps I misread the code. Okay, have an upvote. – C. K. Young Aug 07 '14 at 16:22
i put the break; in the If(condition) it only let me loop once, It need to stop when the record is 0 – user3460287 Aug 07 '14 at 16:43
This means you didn't use the proper logical condition. – peter.petrov Aug 07 '14 at 17:01

score 1 · Answer 2 · answered Aug 07 '14 at 16:21

1

You use the key-word "break".

In any loop, whether it is a while, do-while, or for-loop, you can always break the loop with the keyword as a statement "break".

So like this:

do {
     if(condition) {
          break;
     }
while(condition);

answered Aug 07 '14 at 16:21

0-4930-42390eo23o2e0-23oe0-23o

299
2
11

i put the break; in the If(condition) it only let me loop once, It need to stop when the record is 0 – user3460287 Aug 07 '14 at 16:43

score 0 · Answer 3 · edited May 23 '17 at 12:29

0

I think you may be looking for a break statement.

This question shows the break in action. The accepted answer shows how to break out of two loops.

edited May 23 '17 at 12:29

Community

1
1

answered Aug 07 '14 at 16:20

rajah9

11,645
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score 0 · Answer 4 · answered Aug 07 '14 at 16:23

In your code, the do-while loop condition is determined by the first character of display being "n". In your loop, display is never updated, so the condition that "n" is the first letter of display is never met. You can also choose to change your logic as the other answers have suggested by using the break statement.

how to stop While-Do Loop?

4 Answers4