import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
/**
* Unzip a zip file to specific destination.
* @param source Zip File
* @param destination Unzipped file path
*/
public static void decompress(File source, File destination) throws IOException {
  ZipInputStream zis = new ZipInputStream(new FileInputStream(source));
  byte[] buffer = new byte[1024];
  for (ZipEntry zip; (zip = zis.getNextEntry()) != null;) {
    File file = new File(destination, zip.getName());
    if (zip.isDirectory()) {
      file.mkdir();
    } else {
      FileOutputStream fos = new FileOutputStream(file);
      for (int length; (length = zis.read(buffer)) > 0;) {
        fos.write(buffer, 0, length);
      }
      fos.close();
    }
    zis.closeEntry();
  }
  zis.close();
}

This method can unzip a zip file source

Source argument is a source file path, destination for the final destination the file unzipped to.