java-zip解压文件

package cc;


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;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;


public class zip_decompress {
private static ZipInputStream zis;
private final static String path="C:/Users/Administrator/Desktop/";                

public static void mkdir(File file){
if(!file.exists()){
file.mkdirs();
}
}
/*
* 将指定的zip文件解压到桌面
*/
public void decompress(File file) throws IOException{
zis=new ZipInputStream(new FileInputStream(file));
ZipEntry entry=zis.getNextEntry();

while(entry!=null){
File desF=new File(path+entry.getName());
if(entry.isDirectory()){
mkdir(desF);
}else{
BufferedOutputStream bos=new BufferedOutputStream(new FileOutputStream(desF));
byte[] b=new byte[1024];
int len;
while((len=zis.read(b))!=-1){
bos.write(b, 0, len);
}
bos.close();
}
entry=zis.getNextEntry();
}
}
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
zip_decompress myzip=new zip_decompress();
System.out.println("decompressioning");
myzip.decompress(new File("E:/myzip.zip"));
System.out.println("decompression done");
}


}