import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class Main {

	public static void main(String[] args) throws IOException {
		long start = System.currentTimeMillis();
		method1("D:\\666\\555.txt", "D:\\666\\444.txt");
		method2("D:\\666\\555.txt", "D:\\666\\444.txt");
		method3("D:\\666\\555.txt", "D:\\666\\444.txt");
		method4("D:\\666\\555.txt", "D:\\666\\444.txt");
		long end = System.currentTimeMillis();
		System.out.println("共耗時：" + (end - start) + "毫秒");
	}

	// 高效位元組流一次讀寫一個位元組陣列：
	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();
	}

	// 高效位元組流一次讀寫一個位元組：
	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();
	}

	// 基本位元組流一次讀寫一個位元組陣列
	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();
	}

	// 基本位元組流一次讀寫一個位元組
	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();
	}

}