Properties和IO流结合的功能

Properties的方法：

void list(PrintWriter out)

void load(Reader reader)

void store(Writer writer,String Comments)

list()与store()的区别

list只能接收打印流

store可接受任意输出流（字节、字符等）

public class PropertiesDemo2 {

public static void main(String[] args) throws IOException {

//void list(PrintWriter out)

  //  method1();

//method2();

//创建属性列表对象

Properties prop=new Properties();

//添加映射关系

prop.setProperty("理工111", "李倩倩");

prop.setProperty("理工112", "李建民");

prop.setProperty("理工113", "李朱泥");

//创建输出流对象

//void store(Writer writer,String Comments)

Writer w=new FileWriter("bb.txt");

prop.store(w, "PropertiesTest");

//释放资源

w.close();

}

private static void method2() throws FileNotFoundException, IOException {

//创建属性列表对象

Properties pro=new Properties();

//创建输入流对象

//void load(Reader reader)

FileReader fr=new FileReader("cc.txt");

pro.load(fr);

//释放资源

fr.close();

System.out.println(pro);

}

private static void method1() throws FileNotFoundException {

Properties prop=new Properties();

//添加映射关系

prop.setProperty("理工111", "李倩倩");

prop.setProperty("理工112", "李建民");

prop.setProperty("理工113", "李朱泥");

//创建打印流对象

PrintWriter out=new PrintWriter("cc.txt");

prop.list(out);

//释放资源

out.close();

}

}