Java_基础—流的标准处理异常代码1.6版本及其以前

package com.soar.stream;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class Demo8_TryFinally {
    /*
     * 流的标准处理异常代码1.6版本及其以前
     * 面试会用到
     */
    public static void main(String[] args) throws IOException {
        FileInputStream fis = null;
        FileOutputStream fos = null;
        try{
            fis = new FileInputStream("xxx.txt");
            fos = new FileOutputStream("yyy.txt");

            int b;
            while((b = fis.read()) != -1){
                fos.write(b); 
            }
        }finally{
            try {
                if(fis != null){
                    fis.close();
                }
            }finally{               //try..finally的嵌套目的是能关一个就尽量关一个
            if(fos != null){
                fos.close();
            }
        }
      }
   }
}