JAVA中如何输入数据 - Java / Java SE

在C中用SCANF
那么在JAVA中如何实现 
最好举行下例子

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Scanner sc = new Scanner(System.in);
System.out.println("请输入内容：");
String str = sc.nextLine();
System.out.println("您输入的内容为：" + str);

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Java code:
String str;
int a;
BufferedReader buf=new BufferedReader(new InputStreamReader(System.in));
System.out.println("请输入一个数：");
str=buf.readLine();
a=Integer.parseInt(str);
System.out.println("输入的数为："+a);

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引用

Java code
String str;
int a;
BufferedReader buf=new BufferedReader(new InputStreamReader(System.in));
System.out.println("请输入一个数：");
str=buf.readLine();
……

、、、、

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其实都一样

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Java code:

package TestShuru;

import java.io.*;

public class TestShuru {
public static void main(String[] args) throws Exception{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String str = "";
while((str = br.readLine())!=null){
Sy