Exemple
public class Container {

public Container(int size) {
list = new Vector(size);
}

public boolean isWithDefaultMember() {
return list.contains(defaultMember);
}

public void addMember(Object member) {
list.add(member);
}

private List list;

public static Object defaultMember = new ApplicationDefaultMember();
}
Solution
Essayez de supprimer le membre statique ou déclarez-le comme final.
public class Container {

public Container(int size) {
list = new Vector(size);
}

public boolean isWithDefaultMember() {
return list.contains(defaultMember);
}

public void addMember(Object member) {
list.add(member);
}

private List list;

public final Object defaultMember = new ApplicationDefaultMember();
}