Load properties from files in Java

java-load-properties-by-static-methods.java

// Java : GetResourceAsStream In Static Method
// - http://www.mkyong.com/java/java-getresourceasstream-in-static-method/

// If the method getFilePathToSave() is converted to static method, the getClass()
// method will be failed, and prompts "Cannot make a static reference to the non-static
// method getClass() from the type Object".

// Instead, you should use CurrentClass.class.getClassLoader().getResourceAsStream.

package com.mkyong.crawler.util;

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

public class FileHelper {

  public static String getFilePathToSave() {

        Properties prop = new Properties();
        String filePath = "";

        try {

          InputStream inputStream =
            FileHelper.class.getClassLoader().getResourceAsStream("config.properties");

          prop.load(inputStream);
          filePath = prop.getProperty("json.filepath");

        } catch (IOException e) {
                e.printStackTrace();
        }

        return filePath;

  }

}

java-load-properties-dzone.java

// Loading A Property File From The Classpath
// - http://www.dzone.com/snippets/loading-property-file

private Properties getPropertiesFromClasspath(String propFileName) throws IOException {
    // loading xmlProfileGen.properties from the classpath
    Properties props = new Properties();
    InputStream inputStream = this.getClass().getClassLoader()
        .getResourceAsStream(propFileName);

    if (inputStream == null) {
        throw new FileNotFoundException("property file '" + propFileName
            + "' not found in the classpath");
    }

    props.load(inputStream);

    return props;
}

java-load-properties-mykong.java

// Java Properties File Examples - mkyong
// - http://www.mkyong.com/java/java-properties-file-examples/

// Four sample codes:
// 1. Write to properties file
// 2. Load a properties file
// 3. Load a properties file from classpath
// 4. Prints everything from a properties file

// =================================================================
// Code example of Loading a properties file from classpath
// Load a properties file config.properties from project classpath, and retrieved
// the property value.
//
// P.S Assume properties file "config.properties" is in your project classpath
// root folder.

package com.mkyong.properties;

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

public class App {

  public static void main( String[] args ){

        Properties prop = new Properties();
        InputStream input = null;

        try {

                String filename = "config.properties";
                input = App3.class.getClassLoader().getResourceAsStream(filename);
                if(input==null){
                    System.out.println("Sorry, unable to find " + filename);
                    return;
                }

                //load a properties file from class path, inside static method
                prop.load(input);

                //get the property value and print it out
                System.out.println(prop.getProperty("database"));
                System.out.println(prop.getProperty("dbuser"));
                System.out.println(prop.getProperty("dbpassword"));

        } catch (IOException ex) {
                ex.printStackTrace();
        } finally{
                if(input!=null){
                        try {
                                input.close();
                        } catch (IOException e) {
                                e.printStackTrace();
                        }
                }
        }

    }
}


// @Output:
//
// localhost
// mkyong
// password

// For non-static method, use this :
prop.load(getClass().getClassLoader().getResourceAsStream("config.properties"));


// =================================================================

nice thanks

Hello,
Im getting a resource leak in my code from props.load.
any idea how I can fix this issue? I tried props.clear() and it did not get rid of the issue.
Any help will be greatly appreciated.
Thanks