ZipEntry 类是java.util.zip包下的一个类，

ZipEntry 类用于表示 ZIP 文件条目。

利用这个类压缩和解压zip文件

具体压缩的例子如下：
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.ZipOutputStream;

/**

• 压缩程序
• @author young

*/
public class SingleFileZip {
public static void main(String[] args) {
File file = new File(“e:/test.txt”);
FileInputStream fis = null;
ZipOutputStream zos = null;
try {
fis = new FileInputStream(file);
zos = new ZipOutputStream(new FileOutputStream(“e:/my.zip”));

        // 创建压缩文件中的条目ZipEntry entry = new ZipEntry(file.getName());// 将创建好的条目加入到压缩文件中zos.putNextEntry(entry);// 写入当前条目所对应的具体内容byte[] buff = new byte[1024];int len = 0;while ((len = fis.read(buff)) != -1) {zos.write(buff, 0, len);}} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {try {fis.close();zos.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}
}

}

解压例子如下：

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;

/**

• 解压程序
• @author young

*/

public class SingleFileUnZip {
public static void main(String[] args) {

    FileOutputStream fos = null;ZipInputStream zis = null;InputStream is = null;try {ZipFile zf = new ZipFile("e:/my.zip");zis = new ZipInputStream(new FileInputStream("e:/my.zip"));fos = new FileOutputStream("e:/unzip.txt");// 从压缩文件中获取一个条目ZipEntry entry = zis.getNextEntry();// 获得该条目对象的数据流is = zf.getInputStream(entry);byte[] buff = new byte[1024];int len = 0;while ((len = is.read(buff)) != -1) {fos.write(buff, 0, len);}} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {try {is.close();zis.close();fos.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}

}