7.2. Use the Default Cache

Procedure 7.2. Add and Remove Data from the Cache

1. Add an entry, replacing key and value with the desired key and value:

   cache.put("key", "value");
   

2. Confirm that the entry is present in the cache:

   assertEquals(1, cache.size());
   assertTrue(cache.containsKey("key"));
   

3. Remove the entry from the cache:

   Object v = cache.remove("key");
   

4. Confirm that the entry is no longer present in the cache:

   assertEquals("value", v);
   assertTrue(cache.isEmpty());