Code example for WeakHashMap

Methods: keySet

        assertSame("LinkedHashMap", map5.keySet(), map5.keySet());
        AbstractMap map6 = new TreeMap();
        assertSame("TreeMap", map6.keySet(), map6.keySet());
        AbstractMap map7 = new WeakHashMap();
        assertSame("WeakHashMap", map7.keySet(), map7.keySet());
     * java.util.AbstractMap#remove(java.lang.Object) 
    public void test_removeLjava_lang_Object() { 
        Object key = new Object();
        Object value = new Object();
        AbstractMap map1 = new HashMap(0);
        map1.put("key", value);
        assertSame("HashMap(0)", map1.remove("key"), value);
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