PDF Placeholders with Other Delimiters: [[name]]

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 requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    //  The PDF used in this example is available at letter_template.pdf

    CkPdf pdf = new CkPdf();
    success = pdf.LoadFile("qa_data/pdf/letter_template.pdf");
    if (success == false) {
        System.out.println(pdf.lastErrorText());
        return;
        }

    //  The letter reads: "Dear [[name]]," ... "expires on [[expiry]]" ... "[[amount]] per year" ... "[[agent]]".
    CkJsonObject json = new CkJsonObject();
    json.UpdateString("placeholderSyntax","[[name]]");
    json.UpdateString("placeholders.date","October 18, 2026");
    json.UpdateString("placeholders.name","Ms. Rivera");
    json.UpdateString("placeholders.expiry","December 31, 2026");
    json.UpdateString("placeholders.amount","$299.00");
    json.UpdateString("placeholders.agent","Dana Whitfield, Account Manager");

    CkJsonObject jsonOut = new CkJsonObject();
    success = pdf.TextReplace("apply",json,jsonOut);
    if (success == false) {
        System.out.println("Not applied: " + jsonOut.emit());
        if (success == false) {
            System.out.println(pdf.lastErrorText());
            return;
            }

        }

    int i = 0;
    int count_i = jsonOut.SizeOfArray("replacements");
    while (i < count_i) {
        jsonOut.put_I(i);
        System.out.println("[[" + jsonOut.stringOf("replacements[i].field") + "]] replaced");
        i = i+1;
        }

    success = pdf.WriteFile("qa_output/letter_rivera.pdf");
    if (success == false) {
        System.out.println(pdf.lastErrorText());
        return;
        }

    //  Sample output:

    //  [[date]] replaced
    //  [[name]] replaced
    //  [[expiry]] replaced
    //  [[amount]] replaced
    //  [[agent]] replaced
  }
}