Java Loops

for (int i = 0; i < 5; i++) {
  System.out.print(i);
  if (i == 3) {
    break;
  }
}
// Outputs: 0123

for (int i = 0; i < 5; i++) {
  if (i == 3) {
    continue;
  }
  System.out.print(i);
}
// Outputs: 01245

int count = 0;
do {
  System.out.print(count);
  count++;
} while (count < 5);
// Outputs: 01234

int count = 0;
while (count < 5) {
  System.out.print(count);
  count++;
}
// Outputs: 01234

int[] numbers = {1,2,3,4,5};
for (int number: numbers) {
  System.out.print(number);
}
// Outputs: 12345

Used to loop around array's or List's

for (int i = 0; i < 10; i++) {
  System.out.print(i);
}
// Outputs: 0123456789

for (int i = 0,j = 0; i < 3; i++,j--) {
  System.out.print(j + "|" + i + " ");
}
// Outputs: 0|0 -1|1 -2|2