import java.util.*;

/**
 *
 * @author mukesh
 */
public class MyTest {
private List<SubTypes> subTypes = new ArrayList<SubTypes>();
    enum Types {
        PercentArea, StackedArea, ChartSubType3;
    }

    enum SubTypes {
        PERSENTAREA1(Types.PercentArea),
        PERSENTAREA2(Types.PercentArea),
        PERSENTAREA3(Types.PercentArea),
        STACKAREA1(Types.StackedArea),
        STACKAREA2(Types.StackedArea),
        STACKAREA3(Types.StackedArea);

        Types t;
        private SubTypes(Types t) {
                this.t = t;
            }
        }

        public List<SubTypes> getSubTypes() {
            return Collections.unmodifiableList(subTypes);
        }

    public static void main(String[] args) {
        /* How can i get SubTypes based on base type ??? */
    }}

private static void getSubTypes(Types type)
{
    SubTypes[] values = SubTypes.values();
    for(SubTypes value : values)
    {
        if(value.t == type){
            System.out.println("found subtype "+ value);
        }
    }

}