IO_文件拷贝

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class Copy {
	public static void main(String[] args) {
		copy("src/com/sxt/io/Copy.java","copy.txt");
	}

	public static void copy(String srcPath, String destPath) {
		// 1、创建源
		File src = new File(srcPath);// 源头
		File dest = new File(destPath);// 目的地
		// 2、选择流
		InputStream is = null;
		OutputStream os = null;
		try {
			is = new FileInputStream(src);
			os = new FileOutputStream(dest);
			// 操作（分段读取）
			byte[] flush = new byte[1024];// 缓冲容器
			int len = -1;// 接收长度
			while ((len = is.read(flush)) != -1) {
				os.write(flush, 0, len);// 分段写出
			}
			os.flush();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (null != os) {
					os.close();
				}
				if (null != is) {
					is.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
}