Config.java

package ClasesBasicas;

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

public class Config {

	private static Properties config;

	public static Properties getConfig() {
		if (config == null) {
			config = new Properties();
			try {
		   		config.load(new FileInputStream("config.properties"));
		   	} catch (IOException ioe) {
		   		ioe.printStackTrace();
		    }
			
		}
		return config;
	}	

}


// Se usa de esta manera

Config.getConfig().getProperty("db-user");

config.properties

alfresco-host=http://localhost:8081/alfresco
alfresco-username=admin
alfresco-password=admin

db-user=root
db-password=

config.properties va en el root del proyecto