## 方法 * store():保存數據到文件. * load():從文件中加載數據. ## 實例 ~~~ public static void main(String[] args) throws IOException { // write(); read(); } //持久化數據到文件中 public static void write() throws IOException { //定義properties Properties ps = new Properties(); ps.setProperty("張三", "18"); ps.setProperty("李四", "20"); ps.setProperty("王五", "16"); //把ps的數據持久化到文件中 ps.store(new FileWriter("info.properties"), "comment"); //comment是描述 } public static void read() throws IOException { Properties ps = new Properties(); //從文件中讀取數據 ps.load(new FileReader("info.properties")); System.out.println(ps); } ~~~