package homework;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
/*8、编写程序，采用多种方式，把d:\\video01.avi的内容复制到d:\\video02.avi中
方式1：基本字节流一次读写一个字节
方式2：基本字节流一次读写一个字节数组
方式3：高效字节流一次读写一个字节
方式4：高效字节流一次读写一个字节数组
C:\Users\wkk\Desktop\Java\作业题\day17.doc
*/
public class HomeWork8 {
public static void main(String[] args) throws IOException {
File file = new File("C:\\Users\\wkk\\Desktop\\Java\\作业题\\day17.doc");
File file2=new File("123.doc");
//methord1(file,file2);
//methord(file,file2);
//methord2(file,file2);
methord3(file,file2);
}
private static void methord3(File file, File file2) throws IOException {
BufferedInputStream bis= new BufferedInputStream(new FileInputStream(file));
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file2));
byte[] buffer = new byte[100];
int len=-1;
while((len=bis.read(buffer))!=-1){
bos.write(buffer, 0, len);
}
}
private static void methord2(File file, File file2) throws IOException {
BufferedInputStream bis= new BufferedInputStream(new FileInputStream(file));
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file2));
int ch = -1;
while((ch=bis.read())!=-1){
bos.write(ch);
}
bos.close();
bis.close();
}
private static void methord(File file, File file2) throws IOException {
FileInputStream fis =new FileInputStream(file);
FileOutputStream fos = new FileOutputStream(file2);
byte[] b = new byte[100];
int len=-1;
while((len=fis.read(b))!=-1){
fos.write(b, 0, len);
}
fis.close();
fos.close();
}
private static void methord1(File file, File file2) throws IOException {
FileOutputStream fos=new FileOutputStream(file2);
FileInputStream fis = new FileInputStream(file);
int ch = -1;
while ((ch=fis.read())!=-1) {
fos.write(ch);
}
fis.close();
fos.close();
}
}
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