import org.apache.commons.lang.enums.*;
import java.util.*;

public class EnumPlay implements Runnable {

    public static void main(String[] args) throws Exception {
        for(int i=0; i<100; i++) {
            Thread t = new Thread(new EnumPlay());
            t.start();
        }
    }

    public void run() {
        int i=1000000;
        while(i > 0) {
            i--;
            ValuedEnum ve = ValuedColorEnum.getEnum(1);
            if(ve == null) {
                System.err.println("NULL FOUND");
            }
        }
    }

}

// copy of the one in src/test
class ValuedColorEnum extends ValuedEnum {
    public static final ValuedColorEnum RED = new ValuedColorEnum("Red", 1);
    public static final ValuedColorEnum GREEN = new ValuedColorEnum("Green", 2);
    public static final ValuedColorEnum BLUE = new ValuedColorEnum("Blue", 3);

    private ValuedColorEnum(String color, int value) {
        super(color, value);
    }

    public static ValuedColorEnum getEnum(String color) {
        return (ValuedColorEnum) getEnum(ValuedColorEnum.class, color);
    }

    public static ValuedColorEnum getEnum(int value) {
        return (ValuedColorEnum) getEnum(ValuedColorEnum.class, value);
    }

    public static Map getEnumMap() {
        return getEnumMap(ValuedColorEnum.class);
    }

    public static List getEnumList() {
        return getEnumList(ValuedColorEnum.class);
    }

    public static Iterator iterator() {
        return iterator(ValuedColorEnum.class);
    }
}