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();
}

}
}