In this blog we will learn about arraylist. arraylist is one of the collection class of collection framework. it is a way of storing elements dynamically in an array. it implements the list interface ...

Instrumentation: querying the memory usage of a Java object provides a nice overview of this interface and provides a link to the Classmexer agent, “a simple Java instrumentation agent that ...

Java Collection means a single unit of objects. Java Collection framework provides many interfaces (Set, List, Queue, Deque) and classes (ArrayList, Vector, LinkedList, PriorityQueue, ... Primitives: ...

Polymorphism—or an object’s ability to execute specialized actions based on its type—is what makes Java code flexible.Many design patterns created by the Gang Of Four rely on some form of ...

Before printing the ArrayList, ... However, the Java Platform provides a data structure that greatly simplifies the use of reference objects like this, called the java.util.WeakHashMap class.