(Java) Insert XML into existing XML by calling InsertChildTreeAfter

Demonstrates how to insert an XML tree or subtree into another XML document using the InsertChildTreeAfter method.

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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[])
  {
    // Build the 1st XML document:
    // <x1>
    //     <a1>1</a1>
    //     <a2>2</a2>
    //     <a3>3</a3>
    // </x1>

    CkXml xml = new CkXml();
    xml.put_Tag("x1");
    xml.UpdateChildContent("a1","1");
    xml.UpdateChildContent("a2","2");
    xml.UpdateChildContent("a3","3");

    // Build a 2nd XML document:

    // <x2>
    //   <b1>11</b1>
    //   <b2>22</b2>
    //   <b3>33</b3>
    // </x2>

    CkXml xml2 = new CkXml();
    xml2.put_Tag("x2");
    xml2.UpdateChildContent("b1","11");
    xml2.UpdateChildContent("b2","22");
    xml2.UpdateChildContent("b3","33");

    // We want to insert xml2 into xml to get this:

    // <x1>
    //     <a1>1</a1>
    //     <x2>
    //         <b1>11</b1>
    //         <b2>22</b2>
    //         <b3>33</b3>
    //     </x2>
    //     <a2>2</a2>
    //     <a3>3</a3>
    // </x1>

    // Insert xml2 after "a1"

    int index = xml.TagIndex("a1");
    if (index < 0) {
        System.out.println("a1 not found.");
        return;
        }

    xml.InsertChildTreeAfter(index,xml2);

    System.out.println(xml.getXml());

    // The result is:

    // <x1>
    //     <a1>1</a1>
    //     <x2>
    //         <b1>11</b1>
    //         <b2>22</b2>
    //         <b3>33</b3>
    //     </x2>
    //     <a2>2</a2>
    //     <a3>3</a3>
    // </x1>

    // Note: xml2 now points to the subtree within xml.
    // For example, update "b3" and then see how it's updated within the merged document:
    xml2.UpdateChildContent("b3","33333333");

    System.out.println(xml.getXml());

    // The result:

    // <x1>
    //     <a1>1</a1>
    //     <x2>
    //         <b1>11</b1>
    //         <b2>22</b2>
    //         <b3>33333333</b3>
    //     </x2>
    //     <a2>2</a2>
    //     <a3>3</a3>
    // </x1>
  }
}