Nested Loops
It is also possible to place a loop inside another loop. This is called a nested loop .
The "inner loop" will be executed one time for each iteration of the "outer loop":
Example
// Outer loop
for (int i = 1; i <= 2; i++) {
System.out.println("Outer: " + i); // Executes 2 times
// Inner loop
for (int j = 1; j <= 3; j++) {
System.out.println(" Inner: " + j); // Executes 6 times (2 * 3)
}
}Multiplication Table Example
This example uses nested loops to print a simple multiplication table (1 to 3):
Example
for (int i = 1; i <= 3; i++) {
for (int j = 1; j <= 3; j++) {
System.out.print(i * j + " ");
}
System.out.println();
}Nested loops are useful when working with tables, matrices, or multi-dimensional data structures .