5-4.txt

java入门的几个代码,很实用,初学者不可错过

import java.io.*;
public class  Try_catch
{
public static void main (String args[]) {
FileInputStream fis=null;
try {                                      
fis=new FileInputStream("c:/filename.txt"); // FileInputStream 方法抛出异常，所以位于try体内
}
catch(FileNotFoundException e)  //捕获FileNotFoundException异常
{
System.out.println("catch exception："+e.getMessage());
}
try{                               
int c=fis.read();   // 调用的read()方法抛出异常
}
catch(IOException e)      //捕获IOException异常
{
System.out.println("catch exception："+e.getMessage());
}
}
}