public boolean regionMatches(boolean ignoreCase,
                             int toffset,
                             String other,
                             int ooffset,
                             int len)

import java.io.*;
public class Test {

   public static void main(String args[]) {
      String Str1 = new String("Welcome to Tutorialspoint.com");
      String Str2 = new String("TUTORIALS");

      System.out.print("Return Value :" );
      System.out.println(Str1.regionMatches(true, 11, Str2, 0, 9));
   }
}

Return Value :true