Java – String regionMatches() Method

This method has two variants which can be used to test if two string regions are equal.

Syntax:

Here is the syntax of this method:

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

or

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

Parameters:

Here is the detail of parameters:

• toffset — the starting offset of the subregion in this string.
• other — the string argument.
• ooffset — the starting offset of the subregion in the string argument.
• len — the number of characters to compare.
• ignoreCase — if true, ignore case when comparing characters.

Return Value :

• It returns true if the specified subregion of this string matches the specified subregion of the string argument; false otherwise. Whether the matching is exact or case insensitive depends on the ignoreCase argument.

Example:

import java.io.*;

public class Test{
   public static void main(String args[]){
      String Str1 = new String("Welcome to www.dineshonjava.com");
      String Str2 = new String("dineshon");
      String Str3 = new String("DINESHON");

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

      System.out.print("Return Value :" );
      System.out.println(Str1.regionMatches(11, Str3, 0, 9));

      System.out.print("Return Value :" );
      System.out.println(Str1.regionMatches(true, 11, Str3, 0, 9));
   }
}

This produces following result: