Thread: Breaking out of multiple loops

Is there an easy way to do it? I want to break out of two loops, but the code is also in another loop.

Hi,
have you tried using:
break;
?

break only breaks out of the lowest loop you're in.
ex:

while(cond1)
{
        doit1();
        while(cond2)
        {
                    doit2();
                     while (cond3)
                    {
                            doit3();
                            if (cond4)
                            {
                                   // break out to cond1 while loop
                            }
                    }
                    doit4();
        }
        doit5();
}

what would you put in place of the comment to fulfill that task?

I wrote a short code to test my theory and it worked, however I believe you can reuse and optimize the code in a better way to get the same results, this is just an example how to do it:

package Random;
 
public class BreakWhileLoops {
 
	/**
	 * @param args
	 */
	public static void main(String[] args) {
 
		int i=0;
		boolean loopOneBreak = false;
		while (true){ //while 1
			while(true){ //while 2
				while(true){ //while 3
					i++;
					if(i>5){
						loopOneBreak = true;
					}
					if (loopOneBreak){
						break; //break while 3
					}
					System.out.println("while 3: " + i);
				}
				if (loopOneBreak){
					break; // break while 2
				}
				System.out.println("while 2: " + i);
			}
			if (loopOneBreak){
				break; //break while 1
			}
			System.out.println("while 1: " + i);
		}
		System.out.println("Ended while loops succsessfully!");
 
	}
 
}

Using labels allows you to break out of several loops at once.

class BreakWithLabelDemo {
    public static void main(String[] args) {
 
        int[][] arrayOfInts = { { 32, 87, 3, 589 },
                                { 12, 1076, 2000, 8 },
                                { 622, 127, 77, 955 }
                              };
        int searchfor = 12;
 
        int i;
        int j = 0;
        boolean foundIt = false;
 
    search:
        for (i = 0; i < arrayOfInts.length; i++) {
            for (j = 0; j < arrayOfInts[i].length; j++) {
                if (arrayOfInts[i][j] == searchfor) {
                    foundIt = true;
                    break search;
                }
            }
        }
 
        if (foundIt) {
            System.out.println("Found " + searchfor +
                               " at " + i + ", " + j);
        } else {
            System.out.println(searchfor
                               + " not in the array");
        }
    }
}

// Json