java的输入方法

方法一：用Scanner类的方法

import java.util.*;
public class scancer {

/**
  * @param args
  */
public static void main(String[] args) {
  // TODO Auto-generated method stub
  Scanner scn=new Scanner(System.in);
  System.out.println(&quot，please Input Some Words");
  String str=scn.nextLine();
  System.out.print(str);
}

}




方法二：io包

import java.io.*;//一次读一行
public class bufferreader {

/**
  * @param args
  */
public static void main(String[] args) throws Exception
{
  // TODO Auto-generated method stub
  BufferedReader bf=new BufferedReader(new InputStreamReader(System.in));
  System.out.println(&quot，please Input Some Words");
  String str=bf.readLine();
  System.out.println(str);
}

}


  public class InputNum {

/**
  * @param args
  */
public static void main(String[] args) throws Exception //一次性读一个字符
{
  // TODO Auto-generated method stub
   int a = System.in.read();
     char ch = (char)a;
     System.out.println("a: " + a);
     System.out.println("ch: " + ch);

}

}