Core java 输入和输出实例（很有用，让我明白了很多，谢谢作者）

一个简单的java输入输出实例，包含了最常用的输入输出函数。

[java] view plaincopyprint?

1. package com.xujin; 
2.  
3. import java.util.Date; 
4. import java.util.Scanner; 
5.  
6. public class MyTest{ 
7.     static Scanner cin =new Scanner(System.in); 
8.     publicstatic void main(String[] args){  
9.          
10.         System.out.print("input your name:"); 
11.         String name = cin.next();//读入下一个单词，以空格作为标准 
12.         System.out.print("input your age:"); 
13.         int age = cin.nextInt();//读入下一个int，以空格作为标准 
14.         System.out.print("input your salary:"); 
15.         double salary = cin.nextDouble(); 
16.         System.out.print("input detail:"); 
17.         String detail = cin.nextLine();//读入下一行，这里是读入上一次的回车 
18.         detail = cin.nextLine();//读入下一行 
19.          
20.         //格式化输出 
21.         System.out.printf("Name:%s\n", name); 
22.         System.out.printf("Age:%d\tOct:%<o\tHex:%1$#x\n",age);//output:Age:20    Oct:24  Hex:0x14 
23.         System.out.printf("Salary:%#,8.2f\nDetail:",salary); 
24.         System.out.println(detail); 
25.          
26.         //时间输出 
27.         System.out.printf("Now:%tc\n",new Date());//output:星期三 一月 16 21:02:10 CST 2013 
28.         System.out.printf("%1$s %2$tY %2$tB %2$td\n","Now:",new Date());//output:2013 一月 16 
29.         System.out.printf("%s %tY %<tB %<td\n","Now:",new Date());//output：2013 一月 16 
30.          
31.         //使用静态的String.format方法常见一个格式化的字符串，而不打印输出 
32.         System.out.println(detail); 
33.         String message = String.format("Hello,%s! You will be %d next year", name, ++age); 
34.         System.out.print(message); 
35.     } 
36. } 

package com.xujin;import java.util.Date;import java.util.Scanner;public class MyTest{static Scanner cin = new Scanner(System.in);public static void main(String[] args){System.out.print("input your name:");String name = cin.next();//读入下一个单词，以空格作为标准System.out.print("input your age:");int age = cin.nextInt();//读入下一个int，以空格作为标准System.out.print("input your salary:");double salary = cin.nextDouble();System.out.print("input detail:");String detail = cin.nextLine();//读入下一行，这里是读入上一次的回车detail = cin.nextLine();//读入下一行//格式化输出System.out.printf("Name:%s\n", name);System.out.printf("Age:%d\tOct:%<o\tHex:%1$#x\n",age);//output:Age:20Oct:24Hex:0x14System.out.printf("Salary:%#,8.2f\nDetail:",salary);System.out.println(detail);//时间输出System.out.printf("Now:%tc\n",new Date());//output:星期三 一月 16 21:02:10 CST 2013System.out.printf("%1$s %2$tY %2$tB %2$td\n", "Now:",new Date());//output:2013 一月 16System.out.printf("%s %tY %<tB %<td\n", "Now:",new Date());//output：2013 一月 16//使用静态的String.format方法常见一个格式化的字符串，而不打印输出System.out.println(detail);String message = String.format("Hello,%s! You will be %d next year", name, ++age);System.out.print(message);}}

console结果：

input your name:Gin
input your age:20
input your salary:5000
input detail:detail...
Name:Gin
Age:20 Oct:24 Hex:0x14
Salary:5,000.00
Detail:detail...
Now:星期三 一月 16 21:12:38 CST 2013
Now: 2013 一月 16
Now: 2013 一月 16
detail...

Hello,Gin! You will be 21 next year