Java Properties Files

PropertiesDemo.java

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

public class PropertiesDemo {
	PropertiesDemo() {
		
	}
	
	//Print Properties
	public void showProperties(Properties props) {
	    for(String key : props.stringPropertyNames()) {
	        String val = props.getProperty(key);
	        System.out.println("Key: '" + key + "' val: '" + val + "'");
	    }
	}
	
	public static void main(String args[]) {
		PropertiesDemo pd = new PropertiesDemo();
		Properties props = new Properties();
		
		try {
		    FileInputStream in = new FileInputStream("propFile.properties");
		    props.load(in);
		    in.close();
		} catch(IOException e) {
			e.printStackTrace();
		} catch(IllegalArgumentException iae) {
			  iae.printStackTrace();
		}
		
		pd.showProperties(props);
	}
}

propFile.properties

#Sample Key-Value pairs
a:propA
b:propB
c:propC

#Add multi lines and space
d : another Property
e : multi\nline\nproperty

#Also, use equal sign instead of colon
f = fProp
g = gProp