Read a configuration file using java.util.Properties
app.config file: app.name=Properties Sample Code app.version=1.0 import java.io.FileInputStream; import java.io.InputStream; import java.util.Properties; public class Main { public static void main(String[] args) throws Exception { Properties prop = new Properties(); String fileName = "app.config"; InputStream is = new FileInputStream(fileName); prop.load(is); System.out.println(prop.getProperty("app.name")); System.out.println(prop.getProperty("app.version")); System.out.println(prop.getProperty("app.vendor", "Java")); } }