Selenium : To find substring inside a string

To find substring inside a string



import javax.swing.JOptionPane;

public class Substring_in_string
{

 public static void main(String[] args)
 {

  String sData1=JOptionPane.showInputDialog("enter a string data");
  String sData2=JOptionPane.showInputDialog("enter a sub string data");
  if (sData1.contains(sData2) == true)
  {
  System.out.print("The substring exits ");
  }
  else
  {
   System.out.print("The substringdoes not exits ");
  }
 }

}