Question

java readLine()为什么会错误呢?

import java.io.*;
import java.io.BufferedReader;
import java.io.InputStreamReader;

public class revenue {

public static void main(String[] args)
{
BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
String inputLine=in.readLine();
}
}
错误信息:
revenue.java:10: unreported exception java.io.IOException; must be caught or declared to be thrown
String inputLine=in.readLine();

Answer 1

readLine();会抛出异常,你要处理一下

1.try...catch
2.public static void main(String[] args)throws Exception

Answer 2

readLine();会抛出异常。
正确的写法是：
try{
String inputLine=in.readLine();
}
catch(IOException ex)
{
}

Answer 3

I/O异常必须对其进行捕捉或声明以便抛出
可以用try-catch 或 throws IOException

Answer 4

唉~~

都说中了，我还有什么好说的！

Answer 5

意思好像是要你考虑异常，或者用try/catch