//文件復制 package zhi_jie_liu;import java.io.*;public class Example04 {public static void main(String[] args) throws Exception {// TODO Auto-generated method stubInputStream in=new FileInputStream("C:/Users/Administrator/Desktop/數字圖像處理5.ppt");OutputStream out=new FileOutputStream("C:\\Users\\Administrator\\Desktop\\小明\\a.ppt"); int len;long begintime=System.currentTimeMillis();while((len=in.read())!=-1){out.write(len);}long endtime=System.currentTimeMillis();System.out.println("拷貝消耗的時間為："+(endtime-begintime));in.close();out.close();}}

package zhi_jie_liu;import java.io.*;public class Example05 {public static void main(String[] args) throws Exception {// TODO Auto-generated method stubInputStream in=new FileInputStream("C:/Users/Administrator/Desktop/數字圖像處理5.ppt");OutputStream out=new FileOutputStream("C:\\Users\\Administrator\\Desktop\\小明\\a.ppt"); int len;//記錄讀取讀入緩沖區的字節數byte[] buff=new byte[1024];//定義一個字節數組作為緩沖區long begintime=System.currentTimeMillis();while((len=in.read(buff))!=-1){out.write(buff,0,len);//從第一個字節開始向文件中寫入len個字節}long endtime=System.currentTimeMillis();System.out.println("拷貝消耗的時間為："+(endtime-begintime));in.close();out.close();}}
//緩沖流package zhi_jie_liu;import java.io.*;public class Example07 {public static void main(String[] args) throws Exception {// TODO Auto-generated method stub//包裝類，將FileInputStream對象作為參數傳入，創建一個帶緩沖的輸入流BufferedInputStream bis=new BufferedInputStream(new FileInputStream("C:/Users/Administrator/Desktop/數字圖像處理5.ppt"));BufferedOutputStream bos=new BufferedOutputStream(new FileOutputStream("C:\\Users\\Administrator\\Desktop\\a.ppt") );int len;while ((len=bis.read())!=-1) {bos.write(len);}bis.close();bos.close();}}

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