java - java编译时出现Readline错误

Question

我知道我在这里做了一些非常错误的事情，但我坦白地说，我对 java 的了解非常薄弱。每当我调用 dataIn.readLine() 时，我都会收到此编译时错误

unreported exception java.io.IOException; must be caught or declared to be thrown

这是代码，我知道命名约定很糟糕，而且它几乎没有任何作用。

import java.io.*; 
public class money {
    public static void main( String[]args ){
        String quarters; 
        String dimes; 
        String nickels; 
        String pennies; 
        int iquarters; 
        int idimes;
        int inickels; 
        int ipennies; 
        BufferedReader dataIn = new BufferedReader(new InputStreamReader(System.in)); 

        System.out.println( "Enter the number of quarters. " ); 
        quarters = dataIn.readLine(); 
        System.out.println( "Enter the number of dimes" ); 
        dimes = dataIn.readLine(); 
        System.out.println( "Enter the number of nickels" ); 
        nickels = dataIn.readLine(); 
        System.out.println( "Enter the number of pennies" ); 
        pennies = dataIn.readLine(); 

        iquarters = Integer.parseInt( quarters ); 
        idimes = Integer.parseInt( dimes ); 
        inickels = Integer.parseInt( nickels ); 
        ipennies = Integer.parseInt( pennies ); 

    }
}

http://www.ideone.com/9OM6O这里也编译了，结果是一样的。

Answer 1

更改此:

public static void main( String[]args ){

至:

public static void main( String[]args ) throws IOException {

要了解为什么需要这样做，请阅读以下内容:http://download.oracle.com/javase/tutorial/essential/exceptions/