今日份JAVA学习 复制文件

package IO1;

import java.io.*;

public class IO10 {

	/**
	 * 复制文件
	 * */
	public static void main(String[] args) {
		File file = new  File("D:\\java\\img.jpeg");
		File destFile = new File("D:\\java\\123.jpeg");
		byte[]b = new byte[64];
		int len=0;//每次读取数据的个数
//		FileReader fileReader = null;
//		FileWriter fileWriter=null;
		FileInputStream inputStream = null;
		FileOutputStream outputStream = null;
		try {
			inputStream = new FileInputStream(file);
			outputStream = new FileOutputStream(destFile);
			while(( len=inputStream.read(b))!=-1) {
				outputStream.write(b, 0, len);
			}
			
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}finally {
			if (inputStream!=null) {
				try {
					inputStream.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
			if (outputStream!=null) {
				try {
					outputStream.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
		
	}
}