Tuesday, October 29, 2013

How to substitute dynamic placeholder in properties file

This blog will explain you how can you use replace placeholder with original value in properties file. To achieve this task we will you Java API MessageFormat.

Suppose you have properties file named "welcome.properties" having message :
welcome=Hi {0} , Welcome to {1}
Sample : 

import java.io.File;
import java.io.FileInputStream;
import java.text.MessageFormat;
import java.util.Properties;

 * @author abdul
public class DynamicPlaceholder {

* @param args
* @throws Exception 
public static void main(String[] args) throws Exception {
File propFile = new File("D:\\juno\\Practise\\src\\com\\waheed\\dynamic\\placeholder\\substitution\\welcome.properties");
Properties props = new Properties();
FileInputStream stream=new FileInputStream(propFile);
String message = props.getProperty("welcome");
               // Here the {0} and {1} will be substitute with "Waheed" and "India".
String welcome = MessageFormat.format(message, "Waheed","India");
System.out.println("Your message : " + welcome);

Output : 

Your message : Hi Waheed , Welcome to India

No comments:

Post a Comment

How TOPT Works: Generating OTPs Without Internet Connection

Introduction Have you ever wondered how authentication apps like RSA Authenticator generate One-Time Passwords (OTPs) without requiring an i...