Java 字元終端上擷取輸入三種方式

標籤：

http://blog.csdn.net/hongweigg/article/details/14448731

在Java 字元終端上擷取輸入有三種方式：

1、java.lang.System.in (目前JDK版本均支援)

2、java.util.Scanner (JDK版本>=1.5)

3、java.io.Console(JDK版本>=1.6)，特色：能不回顯密碼字元

 

package com.srie.chapter01;import java.io.BufferedReader;import java.io.Console;import java.io.IOException;import java.io.InputStreamReader;import java.util.Scanner;public class TestCalc {    public static void main(String[] args) throws Exception {                readBySystem();        readByScanner();        readByConsole();    }    private static void readByConsole() {        System.out.println("read by console");        Console console = System.console();        if(console == null){            System.out.println("console is null!");        }else{            String readLine = console.readLine();            System.out.println(readLine);        }    }    private static void readBySystem() throws IOException {        System.out.println("read by system.in");        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));        String readLine = bufferedReader.readLine();        System.out.println(readLine);    }    private static void readByScanner() {        System.out.println("read by scanner:");        Scanner scanner = new Scanner(System.in);        String nextLine = scanner.nextLine();        System.out.println(nextLine);    }}

 

Java 字元終端上擷取輸入三種方式