while with a condition

while (true) needs a break to stop. A loop can instead have a real condition: it's checked before every round, and the loop ends the first time that check finds it false.

int number = 1;
while (number <= 5) {
    System.out.println(number);
    number++;
}
System.out.println("Done, number is now " + number);

1
2
3
4
5
Done, number is now 6

This is a counting loop, and it has three parts:

1. a variable set before the loop (int number = 1;),
2. a condition that decides whether another round runs (number <= 5),
3. a change inside the loop that moves toward the end (number++).

Forget the third part and number stays 1 forever: the condition never turns false.

When the loop should end at a known point, a condition says so right at the top. while (true) with break suits loops that end on something the loop reads, like a word such as end.