Java-IO流课后作业练习题3

按以下要求实现文件复制：

1. 创建文件“D:\我的青春谁做主.txt”并自行输入内容； 

2. 创建C:\myFile的目录； 

3. 创建输入流FileInputStream对象，负责对D:\我的青春谁做主.txt文件的读取；

4. 创建输出流FileOutputStream对象，负责将文件内容写入到C:\myFile\my Prime.txt中； 

5. 创建中转站数组words，存放每次读取的内容； 

6. 通过循环实现文件读写； 

7. 关闭输入流、输出流；

package Ch03Homework;

import java.io.*;

public class IOStreamTest {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		//初始化字节流
		FileInputStream fis = null;
		InputStreamReader isr = null;
		BufferedReader br = null;

		FileOutputStream fos = null;
		OutputStreamWriter osw = null;
		BufferedWriter bw = null;

		FileOutputStream fos1 = null;
		OutputStreamWriter osw1 = null;
		BufferedWriter bw1 = null;

		try {
			//创建文件“D:\我的青春谁做主.txt”并自行输入内容；
			fos = new FileOutputStream("D:\\我的青春谁做主.txt");
			osw = new OutputStreamWriter(fos);
			bw = new BufferedWriter(osw);
			bw.write("lllway\ncssasd");
			bw.flush();
			
			// 创建C:\myFile的目录；
			File f = new File("E:\\myFile");
			if(f.exists() == false) {
				f.mkdir();
			}else {
				System.out.println("E:\\myFile目录已存在！！！");
			}
			
			//创建输入流FileInputStream对象，负责对D:\我的青春谁做主.txt文件的读取；
			fis = new FileInputStream("D:\\我的青春谁做主.txt");
			isr = new InputStreamReader(fis);
			br = new BufferedReader(isr);
			
			//创建输出流FileOutputStream对象，负责将文件内容写入到C:\myFile\my Prime.txt中；
			fos1 = new FileOutputStream("E:\\myFile\\my Prime.txt");
			osw1 = new OutputStreamWriter(fos1);
			bw1 = new BufferedWriter(osw1);

			// 创建中转站数组words，存放每次读取的内容；
			char[] words = new char[1024];
			//通过循环实现文件读写；
			int len = 0;
			while((len = br.read(words)) != -1) {
				bw1.write(words,0,len);
			}
			bw1.flush();
			
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally {
			// 要求用try-catch-finally 处理异常，并且关闭流应放在finally 块中。
			try {
				if(br != null)br.close();
				if(bw != null)bw.close();
				if(bw1 != null)bw1.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
	}

		
		
	}

}