for

Example

Display the numbers from 0 to 4.

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

Definition and Usage

The for loop iterates through a block of code repeatedly for a specified number of times.

Based on the provided example:

• The first statement initializes a variable before the loop commences (int i = 0).
• Statement 2 establishes the condition for the loop to execute (i must be less than 5). If the condition is true, the loop repeats; if false, the loop terminates.
• Statement 3 increments a value (i++) after each execution of the code block within the loop.

More Examples

Additionally, there exists a “for-each” loop, primarily employed for traversing elements within an array:

The subsequent example demonstrates outputting all elements within the “cars” array using a “for-each” loop:

Example

String[] cars = {"Volvo", "BMW", "Ford", "Mazda"};
for (String i : cars) {
  System.out.println(i);
}