Java Collections – WeakHashMap Example
A WeakHashMap is a hash table based implementation of the Map interface where the keys are stored in a java.lang.ref.WeakReference. When a …
Java Collections – TreeMap Example
A Red-Black tree based NavigableMap implementation. The TreeMap is sorted according to the natural ordering of its keys, or by a Comparator …
Java Collections – HashMap Example
The HashMap is a hash table based implementation of the map interface and represents a mapping between a key and a value. …
Java Collections – Hashtable Example
The Hashtable maps a key and a value. Hashtable has now been re-engineered to implement the Map interface and is roughly the …
JDBC Tutorials
The JDBC API defines a set of interfaces and classes that all major database providers adhere to in order allow Java developers …
JDBC Statement – Batch Example
A JDBC statement object is used to send SQL command(s) to your relational database management system (RDBMS). It is associated with an …