//释放资源 bis.close(); } }
public class CopyAviDemo { public static void main(String[] args) throws IOException { //记录开始时间 long startTime = System.currentTimeMillis();
//复制视频 // method1(); // method2(); // method3(); method4();
//记录结束时间 long endTime = System.currentTimeMillis(); System.out.println("共耗时：" + (endTime - startTime) + "毫秒"); }
//字节缓冲流一次读写一个字节数组 public static void method4() throws IOException { BufferedInputStream bis = new BufferedInputStream(new FileInputStream("E:\\itcast\\字节流复制图片.avi")); BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream("myByteStream\\字节流复制图片.avi"));
byte[] bys = new byte[1024]; int len; while ((len=bis.read(bys))!=-1) { bos.write(bys,0,len); }
bos.close(); bis.close(); }
//字节缓冲流一次读写一个字节 public static void method3() throws IOException { BufferedInputStream bis = new BufferedInputStream(new FileInputStream("E:\\itcast\\字节流复制图片.avi")); BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream("myByteStream\\字节流复制图片.avi"));
int by; 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() throws IOException { //E:\\itcast\\字节流复制图片.avi //模块目录下的 字节流复制图片.avi FileInputStream fis = new FileInputStream("E:\\itcast\\字节流复制图片.avi"); FileOutputStream fos = new FileOutputStream("myByteStream\\字节流复制图 片.avi");
byte[] bys = new byte[1024]; int len; 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() throws IOException { //E:\\itcast\\字节流复制图片.avi //模块目录下的 字节流复制图片.avi FileInputStream fis = new FileInputStream("E:\\itcast\\字节流复制图片.avi"); FileOutputStream fos = new FileOutputStream("myByteStream\\字节流复制图 片.avi");
int by; while ((by=fis.read())!=-1) { fos.write(by); }
fos.close(); fis.close(); |
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