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Java – String regionMatches() Method example

Last Updated: November 3, 2022 by Chaitanya Singh | Filed Under: java

The method regionMatches() tests if the two Strings are equal. Using this method we can compare the substring of input String with the substring of specified String.

Two variants:
public boolean regionMatches(int toffset, String other, int ooffset, int len): Case sensitive test.
public boolean regionMatches(boolean ignoreCase, int toffset, String other, int ooffset, int len): It has option to consider or ignore the case.

Parameters description:
ignoreCase– if true, ignore case when comparing characters.
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.

Example: regionMatches() method

public class RegionMatchesExample{
   public static void main(String args[]){
       String str1 = new String("Hello, How are you");
       String str2 = new String("How");
       String str3 = new String("HOW");

       System.out.print("Result of Test1: " );
       System.out.println(str1.regionMatches(7, str2, 0, 3));

       System.out.print("Result of Test2: " );
       System.out.println(str1.regionMatches(7, str3, 0, 3));

       System.out.print("Result of Test3: " );
       System.out.println(str1.regionMatches(true, 7, str3, 0, 3));
   }
}

Output:

Result of Test1: true
Result of Test2: false
Result of Test3: true

Reference:

Javadoc

❮ Java String class

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Tags: Java-Strings

About the Author

I have 15 years of experience in the IT industry, working with renowned multinational corporations. Additionally, I have dedicated over a decade to teaching, allowing me to refine my skills in delivering information in a simple and easily understandable manner.

– Chaitanya

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