JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

Publish Your Article Here

How to match a format in string using regular expression?


Description:

Below example shows how to match a string pattern with a regular expression. String.matches() method helps to match the string with a regex. Below example checkes weather given string starts with "www" or not.


Code:
package com.myjava.string;

public class MyStrMatches {

    public static void main(String a[]){
    
        String[] str = {"www.java2novice.com", "http://java2novice.com"};
        for(int i=0;i < str.length;i++){
            if(str[i].matches("^www\\.(.+)")){
                System.out.println(str[i]+" Starts with 'www'");
            } else {
                System.out.println(str[i]+" is not starts with 'www'");
            }
        }
    }
}

Example Output

www.java2novice.com Starts with 'www'
http://java2novice.com is not starts with 'www'

Other String Function Examples

Knowledge Centre
Default value of a local variables?
The local variables are not initialized to any default values. We should not use local variables with out initialization. Even the java compiler throws error.
Famous Quotations
Millions long for immortality who do not know what to do with themselves on a rainy Sunday afternoon.
-- Susan Erz

About Author

Most Visited Pages

Other Interesting Sites

Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
Privacy Policy | Copyright © 2017 by Nataraja Gootooru. All Rights Reserved.