RegionMatches() Method in Java

The regionMatches() method for the String class has two variations that can be utilized to test assuming two string districts are coordinating or equivalent. There are two variations of this strategy, i.e., one is ignore case, and the other is case sensitive.

The regionMatches() method is utilized to test assuming two string districts are equivalent. A substring of this String object is contrasted with a substring of the contention other.

The outcome is true, assuming these substrings address character arrangements that are something similar, ignoring case if and provided that ignoreCase is true.The substring of this string object has the length of len, by ending at the ooffset and begins at the toffset.The outcome is false if and provided that no less than one of coming up next is true.

1. ignoreCase is false, and there is some nonnegative number i not exactly len with the end goal that:

2. ignoreCase is valid, and there is some nonnegative whole number i not exactly len with the end goal that:

Character.toLowerCase(this.charAt(toffset+i)) !=
Character.toLowerCase(other.charAt(ooffset+i))

And

Character.toUpperCase(this.charAt(toffset+i)) !=
Character.toUpperCase(other.charAt(ooffset+i))

4. toffset+len is larger than the length of this String object.

5. ooffset+len is more noteworthy than the length of the other contention.

6. If the toffset is negative.

7. If the ooffset is negative.

Syntax for RegionMatch() Method

Ignore case of the character Syntax:

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

Case sensitive of the character syntax:

Parameters:

ignoreCase: if true, overlook the case while contrasting characters.
toffset: The toffset is the beginning offset of the subregion in this String.
other: The string contention being looked at.
ooffset: The ooffset is the beginning offset of the subregion in the string contention.
len: The len stores the total number of characters to look at.

Return value: Boolean

A substring of the String object is contrasted with a substring of the contention other. The outcome is valid, assuming these substrings address character groupings that are something very similar, overlooking case if and provided that ignoreCase is valid. The substring of the other to be analyzed starts at file ooffset and has length len. The outcome is bogus if and provided that somewhere around one of coming up next is valid.

Example Program on RegionMatches() Method by Case Sensitive

// java program to show the demonstration of the regionMatches() method with case sensitive of the characters
// importing the required packages and classes
import java.io.*;
import java.lang.*;
import java.util.*;
class HelloWorld{
 public static void main(String args[])
 {
    System.out.println(" Hello World!: ");
    // Creating the first string object
    String s1 = new String("Welcome to JavaTpoint");
    // Creating the second string object
    String s2 = new String("JavaTpoint");
    // Creating the Third string object
    String s3 = new String("JAVATPOINT");
    // printing the strings
    System.out.println(" The string are: ");
    System.out.println(" First String: " + s1);
    System.out.println(" second String: " + s2);
    System.out.println(" Third String: " + s3);
    System.out.print(" The output of Comparing the String 1 and String 2:");
    // comparing the first String and the second String
    System.out.println(s1.regionMatches(11, s2, 0, 10));
    System.out.print(" The output of Comparing the String 1 and String 3: ");
    // comparing the first String and the Third String
    System.out.println(s1.regionMatches(11, s3, 0, 10));
    System.out.print(" The output of Comparing the String 2 and String 3: ");
    // comparing the second String and the Third String
    System.out.println(s2.regionMatches(0, s3, 0, 10));
 }
}

Output:

Example Program on RegionMatches() Method by Ignoring Case

// java program to show the demonstration of the regionMatches() method by ignoring the  case sensitive of the character
// importing the required packages and classes
import java.io.*;
import java.lang.*;
import java.util.*;
class HelloWorld{
 public static void main(String args[])
 {
    System.out.println(" Hello World!: ");
    // Creating the first string Object
    String s1 = new String("Welcome to JavaTpoint");
    // creating the second string object
    String s2 = new String("JavaTpoint");
    // creating the Third string object
    String s3 = new String("JAVATPOINT");
    // printing the strings
    System.out.println(" The string are: ");
    System.out.println(" First String: " + s1);
    System.out.println(" second String: " + s2);
    System.out.println(" Third String: " + s3);
    System.out.print(" The output of Comparing the String 1 and String 2:");
    // comparing the first String and the second String
    System.out.println(s1.regionMatches(true, 11, s2, 0, 10));
    System.out.print(" The output of Comparing the String 1 and String 3: ");
    // comparing the first String and the Third String
    System.out.println(s1.regionMatches(false, 11, s3, 0, 10));
    System.out.print(" The output of Comparing the String 2 and String 3: ");
    // comparing the second String and the Third String
    System.out.println(s2.regionMatches(true, 0, s3, 0, 10));
 }
}

Output: