Intro
This example will demonstrates how to compress a directory recursively using ZipEntry class in the java.util.zip package.
Example
package com.freesamplecode.java.zip;
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;
public class ZipDirectoryDemo {
public static void main(String[] args){
String directory = "D:/temp/data";
String zipFile = "D:/temp/data.zip";
ZipDirectoryDemo demo = new ZipDirectoryDemo();
demo.zipDirectory(directory, zipFile);
}
private void zipDirectory(String dir, String zipFile){
File directory = new File(dir);
//get all files in the directory
File[] listOfFiles = directory.listFiles();
try {
FileOutputStream fos = new FileOutputStream(zipFile);
ZipOutputStream zos = new ZipOutputStream(fos);
for(int i = 0; i < listOfFiles.length; i++){
File file = listOfFiles[i];
String absolutePath = file.getAbsolutePath();
System.out.println("Adding file "+file.getAbsolutePath()+" to zip");
ZipEntry zipEntry = new ZipEntry(absolutePath);
zos.putNextEntry(zipEntry);
FileInputStream fis = new FileInputStream(absolutePath);
byte[] buffer = new byte[1024];
int length = 0;
while((length = fis.read(buffer)) > 0){
zos.write(buffer);
}
zos.closeEntry();
fis.close();
}
System.out.println("Zip processing completed");
zos.close();
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
Output
Adding file D:\temp\data\aku - Copy (2).txt to zip Adding file D:\temp\data\aku - Copy (3).txt to zip Adding file D:\temp\data\aku - Copy (4).txt to zip Adding file D:\temp\data\aku - Copy (5).txt to zip Adding file D:\temp\data\aku - Copy.txt to zip Adding file D:\temp\data\aku.txt to zip Zip processing completed
Screenshot
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