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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)

public class Test {
    public static void main(String args[]) {
        String Str1 = new String("www.tutorialpro.org");
        String Str2 = new String("tutorialpro");
        String Str3 = new String("tutorialpro");

        System.out.print("Return Value :" );
        System.out.println(Str1.regionMatches(4, Str2, 0, 5));

        System.out.print("Return Value :" );
        System.out.println(Str1.regionMatches(4, Str3, 0, 5));

        System.out.print("Return Value :" );
        System.out.println(Str1.regionMatches(true, 4, Str3, 0, 5));
    }
}

Return Value :true
Return Value :false
Return Value :true