JAVA IO

1、IO流常用类（网络图）

2、Console

package console;import java.io.Console;public class ConsoleTest {public static void main(String[] args) {Console console = System.console();//从控制台读取一行 String str = console.readLine(); System.err.println(str);  //从控制台读取密码 char[] c=console.readPassword(); System.err.println(new String(c)); //模拟控制台输入输出String user = new String(console.readLine("姓名:")); // 读取整行字符String pwd = new String(console.readPassword("密码:")); // 读取密码,输入时不显示console.printf("Username is: " + user + "\n"); // 显示用户名console.printf("Password is: " + pwd + "\n"); // 显示密码//直接在控制台输出 console.writer().println("finish");}}