public class CopyMp4Demo {

	public static void main(String[] args) throws IOException {

		long start = System.currentTimeMillis();

		// method1("e:\\test.mp4", "copy4.mp4");
		// method2("e:\\test.mp4", "copy4.mp4");
		// method3("e:\\test.mp4", "copy4.mp4");
		method4("e:\\test.mp4", "copy4.mp4");

		long end = System.currentTimeMillis();

		System.out.println("共耗时：" + (end - start) + "毫秒");

	}

	// 高效字节流一次读写一个字节数组：

	public static void method4(String srcString, String destString)

			throws IOException {

		BufferedInputStream bis = new BufferedInputStream(new FileInputStream(

				srcString));

		BufferedOutputStream bos = new BufferedOutputStream(

				new FileOutputStream(destString));

		byte[] bys = new byte[1024];

		int len = 0;

		while ((len = bis.read(bys)) != -1) {

			bos.write(bys, 0, len);

		}

		bos.close();

		bis.close();

	}

	// 高效字节流一次读写一个字节：

	public static void method3(String srcString, String destString)

			throws IOException {

		BufferedInputStream bis = new BufferedInputStream(new FileInputStream(

				srcString));

		BufferedOutputStream bos = new BufferedOutputStream(

				new FileOutputStream(destString));

		int by = 0;

		while ((by = bis.read()) != -1) {

			bos.write(by);

		}

		bos.close();

		bis.close();

	}

	// 基本字节流一次读写一个字节数组

	public static void method2(String srcString, String destString)

			throws IOException {

		FileInputStream fis = new FileInputStream(srcString);

		FileOutputStream fos = new FileOutputStream(destString);

		byte[] bys = new byte[1024];

		int len = 0;

		while ((len = fis.read(bys)) != -1) {

			fos.write(bys, 0, len);

		}

		fos.close();

		fis.close();

	}

	// 基本字节流一次读写一个字节

	public static void method1(String srcString, String destString)

			throws IOException {

		FileInputStream fis = new FileInputStream(srcString);

		FileOutputStream fos = new FileOutputStream(destString);

		int by = 0;

		while ((by = fis.read()) != -1) {

			fos.write(by);

		}

		fos.close();

		fis.close();

	}

}