CompressProgram.java:

import java.io.*;
import java.util.zip.*;

public class CompressProgram
{
  public static void main(String[] args) throws IOException
  {
    File file = new File("zipped-text.zip");
    FileOutputStream fos = new FileOutputStream(file);
    ZipOutputStream zos = new ZipOutputStream(fos);
    OutputStreamWriter osw = new OutputStreamWriter(zos);
    BufferedWriter writer = new BufferedWriter(osw);

    zos.putNextEntry(new ZipEntry("text.txt"));

    writer.write("Line one");
    writer.newLine();
    writer.write("Line two");
    writer.newLine();

    writer.close();
  }
}