Java While Loop

Loops

Loops can execute a block of code as long as a specified condition is reached.

Loops are handy because they save time, reduce errors, and make code more readable.

Java While Loop

The while loop executes a block of code as long as a specified condition is true:

Syntax

while (condition) {
  // code block to be executed
}

In the example below, the code in the loop will run repeatedly as long as a variable (i) is less than 5:

Example

int i = 0;
while (i < 5) {
  System.out.println(i);
  i++;
}

Note: Do not forget to increase the variable used in the condition, otherwise, the loop will never end!