package com.jackie.io.readfile;

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 CopyFile {
	public static void main(String[] args) {
		//建立联系   确保源文件必须存在
		//目标文件可以不存在
		String srcPath = "E:/workspace/newFile.txt";
		String destPath = "E:/workspace/destFile.txt";
		File src = new File(srcPath);
		File dest = new File(destPath);
		//选择流
		InputStream is = null;
		OutputStream os = null;
		byte[] byteArr = new byte[1024];
		int len = 0;
		try {
			//操作
			is = new FileInputStream(src);
			os = new FileOutputStream(dest);
			while(-1 != (len =is.read(byteArr))){
				os.write(byteArr, 0, len);
			}
			os.flush();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			//释放资源
			if(os != null){
				try {
					os.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			if(is != null){
				try {
					is.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}

}