/**
* Serialize an instance, restore it, and check for equality.
*/
public void testSerialization() {
DefaultKeyedValuesDataset d1 = new DefaultKeyedValuesDataset();
d1.setValue("C1", new Double(234.2));
d1.setValue("C2", null);
d1.setValue("C3", new Double(345.9));
d1.setValue("C4", new Double(452.7));
KeyedValuesDataset d2 = null;
try {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();