Java IO复习(一)

package com.zyw.file;

import java.io.*;

/**
 * Created by zyw on 2016/3/10.
 */
public class IOTest {
    public static void main(String args[]){
        File newFile=new File("G:","mywork.txt");//File newFile=new File("G:\\mywork.txt");
        if(newFile.exists()){
            newFile.delete();
            System.out.println(newFile.getName()+"is delete");
        }else {
            try {
                newFile.createNewFile();
                System.out.println(newFile.getName()+"is created");
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        FileOutputStream os=null;
            try {
                os=new FileOutputStream(newFile);
                try {
                    os.write("zyw is a smart boy".getBytes());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }finally {
                //注意一定要将流关闭！！！
                try {
                    os.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

    }
}