Java

Compress Text from StringBuilder to Gzip (BinData Output)

See more Gzip Examples

This example demonstrates how to use the CompressSb method to compress text stored in a StringBuilder into Gzip format.

The text is first converted to its byte representation using the specified character set (in this case, UTF-8). These bytes are then compressed, and the resulting Gzip data is written to a BinData object in memory.

This approach is useful when working with dynamically generated text that you want to compress without first writing it to a file. The example also shows how the compressed data can optionally be saved to a .gz file.

Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    // This example demonstrates how to compress text contained in a StringBuilder
    // into Gzip format, storing the compressed result in a BinData object.

    CkGzip gzip = new CkGzip();
    CkStringBuilder sb = new CkStringBuilder();
    CkBinData bd = new CkBinData();

    // Add some text to the StringBuilder:
    sb.Append("The quick brown fox jumps over the lazy dog.");

    // Compress the text using UTF-8 encoding:
    success = gzip.CompressSb(sb,"utf-8",bd);
    if (success == false) {
        System.out.println(gzip.lastErrorText());
        return;
        }

    // The BinData now contains the Gzip-compressed bytes.
    System.out.println("Compression successful.");
    System.out.println("Compressed size (bytes): " + bd.get_NumBytes());

    // (Optional) Save to a .gz file:
    success = bd.WriteFile("text.gz");
    if (success == false) {
        System.out.println(bd.lastErrorText());
        return;
        }

    System.out.println("Gzip file written to text.gz");
  }
}