Check out example codes for "java nested loop". It will help you in understanding the concepts better.

Code Example 1

// This nested for loop will print 5 rows of 20 asterisks each

for(int i = 0; i < 5; i++) {
  for(int j = 0; j < 20; j++) {
    System.out.print("*");
  }
  System.out.println();
}

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