Java

Demonstrate Binary Data Encoding Methods

Demonstrates binary data encoding methods.

Note: This example requires Chilkat v9.5.0.64 or later.

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[])
  {
    CkBinData binData = new CkBinData();

    //  Append 10 bytes: 00, 01, 02, 03, 04, 05, 06, 07, 08, 09
    binData.AppendEncoded("00010203040506070809","hex");

    //  Show that binData contains 10 bytes.
    System.out.println("num bytes = " + binData.get_NumBytes());

    //  Get as base64
    System.out.println("base64: " + binData.getEncoded("base64"));

    //  Get a chunk of the binary data.
    //  The 1st byte is at index 0.
    //  The output should be "02030405"
    int offset = 2;
    int numBytes = 4;
    System.out.println("chunk: " + binData.getEncodedChunk(offset,numBytes,"hex"));

    //  Copy the bytes to a StringBuilder using the base64url encoding
    CkStringBuilder sb = new CkStringBuilder();
    binData.GetEncodedSb("base64url",sb);
    System.out.println("base64url: " + sb.getAsString());

    //  Remove a chunk from the binary data
    offset = 2;
    numBytes = 4;
    binData.RemoveChunk(offset,numBytes);
    //  The bytes remaining are 00,01,06,07,08,and 09
    System.out.println("after removing chunk: " + binData.getEncoded("hex"));
  }
}