An example of writing a potentially large amount of data directly to a zip file, item by item:

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import org.northcoder.titlewebdemo.beans.Title;
import java.util.List;
import java.io.OutputStream;
import java.io.FileOutputStream;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.util.zip.GZIPOutputStream;
import org.northcoder.titlewebdemo.util.LoggerUtils;
import static java.nio.charset.StandardCharsets.UTF_8;

/**
 *
 */
public class JsonZipFileWriter {

    private final List<Title> titles;
    private OutputStream out;

    public JsonZipFileWriter(List<Title> titles) {
        this.titles = titles;
        boolean append = true;
        try {
            this.out = new GZIPOutputStream(
                    new BufferedOutputStream(
                            new FileOutputStream(
                                    "E:/TitleWebDemo/foo.zip", append)));
        } catch (IOException ex) {
            LoggerUtils.LOGGER.error(ex);
        }

    }

    public void write() {
        titles.forEach((title) -> {
            try {
                out.write(title.getBeanDataAsJson().getBytes(UTF_8));
            } catch (IOException ex) {
                LoggerUtils.LOGGER.error(ex);
            }
        });
        try {
            out.close();
        } catch (IOException ex) {
            LoggerUtils.LOGGER.error(ex);
        }
    }

}