[Quote=引用 8 楼 wheress 的回复:]
import java.util.*;
public class Test
{
public static void main(String[] args) throws Exception
{
Scanner ir = new Scanner(System.in);
public static void main(String[] args){
Test t = new Test();
int i = t.readInput();
System.out.println("输入数的平方是:"+i*i);
}
public int readInput(){
BufferedReader buff = new BufferedReader(new InputStreamReader(System.in));
try{
System.out.println("请输入一个数字:");
int num = Integer.parseInt(buff.readLine());
}catch(Exception e){
System.out.println("读控制台数据异常");
}
return num;
}
}
在dos下面运行的命令:
javac Test.java
java Test // 看楼主的错误,应该是这里输入的是java Test1