Loop Controls Here is an example of range validation, but has no control as how many times the user can take to input the correct value Example-1: Input Validation package com.example; import javax.swing.*; public class loopContinued { public static void main(String[] args) { //input validation String input; int number; input= JOptionPane.showInputDialog("Please enter a number" + "between 1 and 100"); number=Integer.parseInt(input); // now let us validate while(number <1 || number >100) // OR operator to check outside range { JOptionPane.showMessageDialog(null, "Not a valid number"); input=JOptionPane.showInputDialog("Please enter a number between 1 and 100"); number = Integer.parseInt(input); } } } Example-2:  user control of Loop In the example below, we use control the loop variable package com.example; import javax.swing.*; public class loopContinued { public static void main(String[] args) { //input validation String input; int Maxnumber; input=JOptionPane.showInputDialog("How high should I go to square the number"); Maxnumber = Integer.parseInt(input); System.out.println("number Squareed "); for(int i=1; i<= Maxnumber; i++) { System.out.println( i