Java

Serialize / Deserialize Hashtable to/from XML

Demonstrates how to seralize / deserialize a Hashtable to/from XML.

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

Chilkat2 Java

import com.chilkatsoft.chilkat2.Hashtable;
import com.chilkatsoft.chilkat2.StringBuilder;
import com.chilkatsoft.chilkat2.StringTable;

public class ChilkatExample {

    public static void main(String[] args) {
        // Note: This example requires Chilkat v9.5.0.64 or later.

        // Add some entries to a hashtable.
        Hashtable hashTab = new Hashtable();

        hashTab.addStr("aaa", "111");
        hashTab.addStr("bbb", "222");
        hashTab.addStr("ccc", "333");

        // Serialize to XML
        StringBuilder sb = new StringBuilder();
        hashTab.toXmlSb(sb);
        System.out.println(sb.getAsString());
        System.out.println("---");

        // The output is as follows.  Each hash table entry
        // is contained in an "e" node.  The entry's key
        // is in the "k" node, and the value in the "v" node.

        // <?xml version="1.0" encoding="utf8-8"?>
        // <hashtable>
        // <e><k>aaa</k><v>111</v></e>
        // <e><k>bbb</k><v>222</v></e>
        // <e><k>ccc</k><v>333</v></e>
        // </hashtable>
        //

        // Now load (deserialize) into a new hash table.
        Hashtable hashTab2 = new Hashtable();
        hashTab2.addFromXmlSb(sb);

        // Get the hash table keys, and lookup each (to show
        // that the hash table was correctly deserialized).
        // The GetKeys method can return the keys in any order.
        StringTable sTable = new StringTable();
        hashTab2.getKeys(sTable);

        int i = 0;
        int numKeys = sTable.getCount();
        while (i < numKeys) {
            String key = sTable.stringAt(i);
            System.out.println(key + ": " + hashTab2.lookupStr(key));
            i = i + 1;
        }
    }
}