Examples of java.util.WeakHashMap.keySet()

java.util.WeakHashMap.keySet()
Returns a {@link Set} view of the keys contained in this map.The set is backed by the map, so changes to the map are reflected in the set, and vice-versa. If the map is modified while an iteration over the set is in progress (except through the iterator's own remove operation), the results of the iteration are undefined. The set supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Set.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations.


    AbstractMap map6 = new TreeMap();
    assertSame("TreeMap", map6.keySet(), map6.keySet());


    AbstractMap map7 = new WeakHashMap();
    assertSame("WeakHashMap", map7.keySet(), map7.keySet());
  }


  /**
   * @tests java.util.AbstractMap#remove(java.lang.Object)
   */

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    AbstractMap map6 = new TreeMap();
    assertSame("TreeMap", map6.keySet(), map6.keySet());


    AbstractMap map7 = new WeakHashMap();
    assertSame("WeakHashMap", map7.keySet(), map7.keySet());
  }


  /**
   * @tests java.util.AbstractMap#remove(java.lang.Object)
   */

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        WeakHashMap map = new WeakHashMap();
        ConstantHashClass cl = new ConstantHashClass(2);
        map.put(new ConstantHashClass(1), null);
        map.put(cl, null);
        map.put(new ConstantHashClass(3), null);
        Iterator iter = map.keySet().iterator();
        iter.next();
        iter.next();
        System.gc();
        assertFalse("Wrong hasNext() value", iter.hasNext());
    }

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    AbstractMap map6 = new TreeMap();
    assertSame("TreeMap", map6.keySet(), map6.keySet());


    AbstractMap map7 = new WeakHashMap();
    assertSame("WeakHashMap", map7.keySet(), map7.keySet());
  }


  /**
   * @tests java.util.AbstractMap#remove(java.lang.Object)
   */

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    AbstractMap map6 = new TreeMap();
    assertSame("TreeMap", map6.keySet(), map6.keySet());


    AbstractMap map7 = new WeakHashMap();
    assertSame("WeakHashMap", map7.keySet(), map7.keySet());
  }


  /**
   * @tests java.util.AbstractMap#remove(java.lang.Object)
   */

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        {
            return null;
        }


        // seek for an open broker, preferably in transaction
        for(Iterator it = set.keySet().iterator(); it.hasNext();)
        {
            PersistenceBrokerInternal tmp = (PersistenceBrokerInternal) it.next();
            if(tmp == null || tmp.isClosed())
            {
                it.remove();

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     * Remove all of this Service's serviceObjects from it known sessions
     */
    public void clearSessions() {
      WeakHashMap map = (WeakHashMap) sessions.get( this.getName() );
      if ( map == null ) return ;
      Iterator iter = map.keySet().iterator();
      while ( iter.hasNext() ) {
        Session session = (Session) iter.next();
        session.remove( this.getName() );
      }
    }

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        AbstractMap map6 = new TreeMap();
        assertSame("TreeMap", map6.keySet(), map6.keySet());


        AbstractMap map7 = new WeakHashMap();
        assertSame("WeakHashMap", map7.keySet(), map7.keySet());
    }


    /**
     * @tests java.util.AbstractMap#remove(java.lang.Object)
     */

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        AbstractMap map6 = new TreeMap();
        assertSame("TreeMap", map6.keySet(), map6.keySet());


        AbstractMap map7 = new WeakHashMap();
        assertSame("WeakHashMap", map7.keySet(), map7.keySet());
    }


    /**
     * @tests java.util.AbstractMap#remove(java.lang.Object)
     */

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        WeakHashMap map = new WeakHashMap();
        ConstantHashClass cl = new ConstantHashClass(2);
        map.put(new ConstantHashClass(1), null);
        map.put(cl, null);
        map.put(new ConstantHashClass(3), null);
        Iterator iter = map.keySet().iterator();
        iter.next();
        iter.next();
        System.gc();
        assertFalse("Wrong hasNext() value", iter.hasNext());
    }

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