(Java) JSON Escape and Unescape a String

Demonstrates how to JSON escape or unescape a string.

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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[])
  {
    CkStringBuilder sb = new CkStringBuilder();

    sb.Append("backslash: \\\\, A: \\u0041");
    System.out.println(sb.getAsString());

    // The output is:
    //    backslash: \\, A: \u0041

    // The keyword "json" can be used
    // to escape and unescape.  To escape is to encode.  To unescape is to decode.

    // Unescape (decode) the string in sb.
    sb.Decode("json","utf-8");
    System.out.println(sb.getAsString());

    // After JSON unescaping:
    //    backslash: \, A: A

    // Now JSON escape the string.
    sb.Encode("json","utf-8");
    System.out.println(sb.getAsString());

    // After JSON escaping:
    //    backslash: \\, A: A

    // Note: The "A" is not escaped to "\u0041" because there is no need.
    // The "\uXXXX" format would be produced for non-printable control chars.
  }
}