예제

public static void add( Object element ) {
list.add( element );
}

public static void remove( Object element ) {
list.remove( element );
}

private StaticCollection_Example() {
super();
}

private static List list = new ArrayList(10);

솔루션
콜렉션을 비정적으로 변경하십시오.

public StaticCollection_Solution() {
super();
}

public void add( Object element ) {
list.add( element );
}

public void remove( Object element ) {
list.remove( element );
}

private List list = new ArrayList(10);