6.4. Use the Default Cache

6.4.1. Add and Remove Data from the Cache
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JBoss Data Grid offers an interface that is similar to the proposed JSR-107 API to access and alter data stored in a cache.

The following procedure is an example that defines what each line entered into the DefaultCacheQuickstart.java file does:

Procedure 6.2. Add and Remove Data from the Cache

Add an entry, replacing key and value with the desired key and value:
```
cache.put("key", "value");
```
```
cache.put("key", "value");
```
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Confirm that the entry is present in the cache:

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

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

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Remove the entry from the cache:
```
Object v = cache.remove("key");
```
```
Object v = cache.remove("key");
```
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Confirm that the entry is no longer present in the cache:
```
assertEquals("value", v);
```
```
assertEquals("value", v);
```
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