How do I exit a while loop in Java?

Question

What is the best way to exit/terminate a while loop in Java?

For example, my code is currently as follows:

while(true){
    if(obj == null){

                


        

Answer 1

Finding a while...do construct with while(true) in my code would make my eyes bleed. Use a standard while loop instead:

while (obj != null){
    ...
}

And take a look at the link Yacoby provided in his answer, and this one too. Seriously.

The while and do-while Statements

Answer 2

You can use "break" to break the loop, which will not allow the loop to process more conditions

Answer 3

Take a look at the Java™ Tutorials by Oracle.

But basically, as dacwe said, use break.

If you can it is often clearer to avoid using break and put the check as a condition of the while loop, or using something like a do while loop. This isn't always possible though.

Answer 4

You can use "break", already mentioned in the answers above. If you need to return some values. You can use "return" like the code below:

 while(true){
       if(some condition){
            do something;
            return;}
        else{
            do something;
            return;}
            }

in this case, this while is in under a method which is returning some kind of values.