Addint the zero to value with Left padding

Java program to automate keyboard key press and mouse click events  

public class Test2 {

 
 public static void main(String[] args) {
  String value1="123";
  int defaultLength=8;
  String leftPadZero=leftPaddingWithZeroVal(value1, defaultLength);
  System.out.println(leftPadZero);
 }

 private static String leftPaddingWithZeroVal(String value, int defaultLength) {
  String formattedValue="";
  try {
  int num = Integer.parseInt(value);
   formattedValue = String.format("%0" + defaultLength + "d", num);  
  System.out.println(formattedValue);
  }catch (Exception e) {
   e.printStackTrace();
  }
  return formattedValue;
 }
}

Output of the Above Programs

00000123