checkedexceptiondemo.java

金旭亮的java教案

import java.io.*; 
 
public class CheckedExceptionDemo { 
    public static void main(String[] args) throws IOException { 
        try { 
            BufferedReader buf = new BufferedReader( 
                new InputStreamReader(System.in)); 
            System.out.print("请输入整数: "); 
            int input = Integer.parseInt(buf.readLine()); 
            System.out.println("input x 10 = " + (input*10)); 
       } 
        //以下异常必须捕获
        catch(IOException e) { 
            System.out.println("I/O错误"); 
        } 
        //以下异常可以不捕获
        catch(NumberFormatException e) { 
            System.out.println("输入必须为整数"); 
        }
    } 
}