import net.lingala.zip4j.ZipFile;
import net.lingala.zip4j.exception.ZipException;
import net.lingala.zip4j.model.FileHeader;
import java.io.IOException;

public class SampleClass{

  public static void main(String[] args)
                     throws ZipException,
                             IOException{
    ZipFile zip = null;
    
    try{
      zip = new ZipFile
      ("myzip.zip");
      FileHeader header = 
      zip.getFileHeader("img.jpg");
      
      if(header != null){
        zip.removeFile(header);
        System.out.println("\"img.jpg\""+
        " has been removed.");
      }
    }
    finally{
      if(zip != null)
        zip.close();
    }
    
  }
}