Java 输入输出

Posted 2020-11-28 hhyx

# Scanner 类（慢）

 1 import java.util.Scanner;//引入Scanner类
 2 import java.io.BufferedInputStream;
 3 import java.io.BufferedOutputStream;
 4 public class run {
 5     public static void main(String args[]) {
 6         Scanner cin=new Scanner(System.in);//input名字可以取任意合法的
 7         Scanner sc = new Scanner (new BufferedInputStream(System.in));//可以加速
 8         byte x=cin.nextByte();
 9         boolean f=cin.nextBoolean();
10         int a=cin.nextInt();//输入整数
11         short b = cin.nextShort();
12         long c=cin.nextLong();
13         float d=cin.nextFloat();
14         double e=cin.nextDouble();
15         String str=cin.nextLine();//读入字符串
16         while(cin.hasNext()){//相当于while(scanf()!=EOF)
17             break;
18         }
19 
20         System.out.printf("%d",a);
21     }
22 }

 

# BufferedInputStream