dowhilelooptest.java

java 基本输入输出 ,很简单的,给自己看看的

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.util.Scanner;

public class DoWhileLoopTest{
    public static void main(String[] args){
       //第一种从键盘读数据的方法
/*
      BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
      String str=null;
      do{
           System.out.println("Please input your user name:");
           try{
                str=br.readLine();
           }catch(IOException e){
           }
       }while(str.trim().charAt(0)>='0' && str.trim().charAt(0)<='9');
       System.out.println("your user name is:"+str);
    */
       //第二种从键盘读数据的方法
        Scanner sca=new Scanner(System.in);
        System.out.println("Please input your name and age:");

        String name=sca.next();
        int age=sca.nextInt();

        System.out.println("your name is:"+name);
        System.out.println("your age is :"+age);
    }
}