#418 Fixing a Singleton Class

Companies:

Iteco

Themes:

JavaDesign PatternsCode Review

Fix the singleton class:

class MySingletonClass {
    private final static MySingletonClass instance;
    private final ArrayList<String> someList;

    public ArrayList<String> getSomeList() {
        return (ArrayList<String>) someList.copy();
    }

    public static MySingletonClass getInstance() {
        if (instance == null) {
            instance = new MySingletonClass();
            instance.someList = new ArrayList();
            instance.someList.add("Hello");
            instance.someList.add("world");
            instance.someList.add("!");
        }
        return instance;
    }
}

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