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Program: How to load property file using class name in java?


Description:

This example shows how to load a property file using class name in java.


Code:
package com.java2novice.properties;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

public class MyPropUsingClassName {

	private static Properties prop;
	
	static{
		InputStream is = null;
		try {
			prop = new Properties();
			is = MyPropUsingClassName.class.getResourceAsStream("/sample.properties");
			prop.load(is);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	public static String getPropertyValue(String key){
		return prop.getProperty(key);
	}
	
	public static void main(String a[]){
		
		System.out.println("db.host: "+getPropertyValue("db.host"));
		System.out.println("db.user: "+getPropertyValue("db.user"));
		System.out.println("db.password: "+getPropertyValue("db.password"));
	}
}

Output:
db.host: appdomain.java2novice.com
db.user: java2novice
db.password: mypassword
<< Previous Program 

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  1. How to load Properties file from a file system?
  2. How to load Properties file from the classpath?
  3. How to load Properties file from a static block or static method?
  4. How to assign default values for unavailable keys in properties file?
  5. How to get all keys from properties file?
  6. How to create and store property file dynamically?
  7. How to store property file as xml file?
  8. How to load property file using class name in java?
Knowledge Centre
Inner class and Anonymous class
Inner class: classes defined in other classes, including those defined in methods are called inner classes. An inner class can have any accessibility including private.

Anonymous class: Anonymous class is a class defined inside a method without a name and is instantiated and declared in the same place and cannot have explicit constructors.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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