Loops

Loops allow you to execute a block of code repeatedly.

For Loop

The for loop is used when you know how many times you want to execute a block of code.

// Basic for loop
for (int i = 0; i < 5; i++) {
  System.out.println("Count: " + i);
}

While Loop

Executes a block of code as long as a condition is true.

int count = 0;
while (count < 5) {
  System.out.println("Count: " + count);
  count++;
}

Do-While Loop

Similar to while loop, but guarantees at least one execution of the code block.

int count = 0;
do {
  System.out.println("Count: " + count);
  count++;
} while (count < 5);

Loop Control Statements

Break

Terminates the loop immediately.

for (int i = 0; i < 10; i++) {
  if (i == 5) {
    break; // Exit the loop when i is 5
  }
  System.out.println(i);
}

Continue

Skips the current iteration and continues with the next iteration.

for (int i = 0; i < 10; i++) {
  if (i % 2 == 0) {
    continue; // Skip even numbers
  }
  System.out.println(i); // Only prints odd numbers
}

Infinite Loops

An infinite loop is a loop that keeps running forever because the exit condition never becomes true or is missing entirely. This can happen if you forget to update the loop variable, use the wrong condition, or intentionally create a loop that never ends.

// Infinite for loop
for (;;) {
  // Code to execute
  if (someCondition) {
    break;
  }
}