Java核心代码例程之：PropertiesDemo.java

import Java.util.*;

import java.io.*;

/**

* Demonstrates how to sort strings.

***/

public class PropertiesDemo

{

public static void main(String args[]) throws Exception

{

Properties props = new Properties();

props.put("db.user", "jack");

props.put("db.passWord", "opendoor");

// getProperty will return the value if found, otherwise null

System.out.println(props.getProperty("db.user"));

// getProperty will return the value if found, otherwise "none"

System.out.println(props.getProperty("db.password", "none"));

/*

// You can also load properties from a file

FileInputStream fis = new FileInputStream("my.properties");

props.load(fis);

fis.close();

**/

}

}