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How To Write Properties File In Java

January 27, 2014 //  by Krishna Srinivasan//  Leave a Comment

Properties files are stored values in the key-value pairs. This tutorial explains how you can create the properties file using the Java program. If you are aware, Java itself has a Properties class which is used for string the values in the key-value pairs. If you have the values in the Properties object, then those values can be easily transferred to a FileOutputStream to create properties file. Lets look at a simple example to create properties file.

WritePropertiesFileExample.java

package javabeat.net.core;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;

public class WritePropertiesFileExample {
	public static void main(String[] args) {
		try {
			Properties userProperties = new Properties();
			userProperties.setProperty("user.name", "krishna");
			userProperties.setProperty("user.country", "India");
			userProperties.setProperty("user.city", "Bangalore");

			File userFile = new File("user.properties");
			FileOutputStream userFileOut = new FileOutputStream(userFile);
			userProperties.store(userFileOut, "User Details");
			userFileOut.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}

	}
}

If you run the above program, a user.properties file will be created with the content as below.

#User Details
#Mon Jan 27 06:46:14 IST 2014
user.name=krishna
user.country=India
user.city=Bangalore

Category: JavaTag: Java File IO

About Krishna Srinivasan

He is Founder and Chief Editor of JavaBeat. He has more than 8+ years of experience on developing Web applications. He writes about Spring, DOJO, JSF, Hibernate and many other emerging technologies in this blog.

Previous Post: « How To Get Java System Properties Values
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