使用Properties读写属性文件

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import java.io.FileInputStream; import java.io.FileOutputStream; import java.util.Properties;   /*Properties相当于一个key,value都是String类型的Map。*/   public class PropertyTest {     public static void main(String[] args) throws Exception{         Properties props = new Properties();         props.setProperty("driver", "com.mysql.jdbc.Driver");         props.setProperty("url", "jdbc:mysql://localhost:3306/test");         props.setProperty("username","root");         props.setProperty("password", "123");         props.store(new FileOutputStream("Mysql.ini"), "jdbc");         Properties props2 = new Properties();         props2.setProperty("author", "libin");         props2.load(new FileInputStream("Mysql.ini"));         System.out.println(props2);     } }