Strange "for(;;)" infinite loop in Java, how is this useful? [duplicate]

Question

Though I have some experience in Java, the following code looks a bit strange to me:

public class ForLoopTest{
    public static void main(String[] args){
        for(;;){}
    } 
}

This code compiles fine, although the initialization-test-increment part is empty, unlike a usual for loop:

for(int i=0; i<10; i++){}

Since the code compiles fine, it's valid syntax.

Is there any practical use of this type of for loop where there is no initialization-test-increment part ?

Answer 1

This is one way of writing an infinite loop. It's equivalent to:

while(true){ }

---

Or:

boolean loop = true;
while (loop) {
    //do nothing
}

---

Or even:

int theAnswerToTheQuestionOfLifeTheUniverseAndEverything = 42;
while(theAnswerToTheQuestionOfLifeTheUniverseAndEverything == 42) { 
    //do nothing
} 

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