To explain with an abstract class example in Java: Imagine an abstract class named “Vehicle”. This class might have an abstract method called “move”. While the concept of moving is common to all vehicles, th
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There is a distinction in the instantiation process between a normal class and a singleton class.In a normal class, object instantiation is typically performed using a constructor. You can create multiple instances of the class by invoking the constructor with the new keyword, allowing you to ...
Java ClassNotFoundException sample One of the most frequent scenarios leading to a ClassNotFoundException is encountered when attempting to load JDBC drivers using Class.forName, yet inadvertently neglecting to include the corresponding JAR file in the classpath. This omission results in the Java Virt...
Delete a node in the middle of a singly linked list Reverse a linked list Design Pattern Questions Design Pattern Interview Questions and Answers What Is GOF? Design Pattern Interview Question 1 Design Pattern Interview Question Part 2 Design Pattern Interview Question part 3 Decorator pattern versu...
An interface is a reference type in Java. It is similar to class. It is acollectionof abstract methods. It is used to achieve totalabstraction. I believe this is the first question you might expect inJava Interview. Very basic questions but widely used in interview 🙂 ...
supported. This exception extends theRuntimeExceptionclass and thus, belongs to those exceptions that can be thrown during the operation of the Java Virtual Machine (JVM). It is an unchecked exception; therefore, it does not need to be declared in a method's or a constructor's throws clause...
Let's learn about them in detail Interfaces:The abstract data types are referred to as interfaces in Java. They allow Java collections to be manipulated in a way that is not tied to the specifics of their representation. The Set represents the sorted collection of elements. In addition, obje...
Processes and Threads are the essential elements of Java Concurrency. Mainly, they support creating an advanced execution environment in Java. In a way, it is a self-contained environment. Let’s look at them in detail below: Processes: A process is nothing but a complete and private set of...