Java实现文件复制

java实现文件复制，可以直接使用IO流。

package com.ttt;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class CopyUtil {

	static int BUFFER_SIZE = 16 * 1024;
	
	public static void main(String[] args) {
		File f = new File("D:\\abc.txt");
		File t = new File("C:\\bcd.txt");
		try {
			copy(f,t);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	private static void copy(File src, File dst) throws IOException {
		InputStream in = null;
		OutputStream out = null;
		try {
			in = new BufferedInputStream(new FileInputStream(src), BUFFER_SIZE);
			out = new BufferedOutputStream(new FileOutputStream(dst), BUFFER_SIZE);
			byte[] buffer = new byte[BUFFER_SIZE];
			int i;
			while ((i = in.read(buffer)) != -1) {
				out.write(buffer, 0, i);
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		finally {
			if (null != in) {
				in.close();
			}
			if (null != out) {
				out.close();
			}
		}
	}
}