Category: java topic

• Multi threading in java

  Multithreading in Java is a process of executing multiple threads simultaneously. A thread is a lightweight sub-process, the smallest unit of processing. Multiprocessing and multithreading, both are used to achieve multitasking. However, we use multithreading than multiprocessing because threads use a shared memory area. They don’t allocate separate memory area so saves memory, and context-switching…

  Arokiya Kithiyon

  October 11, 2022

  java topic

  multi tasking, multi threading, multi threading life cycle

• Collections in Java

  A collection is an object that represents a group of objects. A collections framework is a unified architecture for representing and manipulating collections, enabling collections to be manipulated independently of implementation details. Advantages: Java Collection Interface The Collection interface is the root interface of the collections framework hierarchy. Java does not provide direct implementations of…

  Arokiya Kithiyon

  October 6, 2022

  java topic

  arrayList, collexctions, Linkedlist, list, set

• String in Java

  There are two ways to create a String object: Now, let us understand the concept of Java String pool. Java String Pool: Java String pool refers to collection of Strings which are stored in heap memory. In this, whenever a new object is created, String pool first checks whether the object is already present in…

  Arokiya Kithiyon

  October 1, 2022

  java topic

  string, string constant pool

• Scanner and System class in java

  System class The System class contains several useful class fields and methods. It cannot be instantiated. Among the facilities provided by the System class are standard input, standard output, and error output streams; access to externally defined properties and environment variables; a means of loading files and libraries; and a utility method for quickly copying…

  Arokiya Kithiyon

  September 16, 2022

  java topic

  scanner class, system class

• Switch Case

  The switch statement is a multi-way branch statement. In simple words, the Java switch statement executes one statement from multiple conditions. It is like an if-else-if ladder statement. It provides an easy way to dispatch execution to different parts of code based on the value of the expression. Basically, the expression can be a byte,…

  Arokiya Kithiyon

  September 10, 2022

  java topic

  break, defaulf block, switch block, switch case

• Interface in java

  The interface in Java is a mechanism to achieve abstraction. There can be only abstract methods in the Java interface, not method body. It is used to achieve abstraction and multiple inheritance in Java. In other words, you can say that interfaces can have abstract methods and variables. It cannot have a method body. Java…

  Arokiya Kithiyon

  August 29, 2022

  java topic

  interface in java, multiple inheritance

• Abstraction in java

  Abstraction is a process of hiding the implementation details and showing only functionality to the user. Another way, it shows only essential things to the user and hides the internal details, for example, sending SMS where you type the text and send the message. You don’t know the internal processing about the message delivery. Abstract…

  Arokiya Kithiyon

  August 25, 2022

  java topic

  abstract class, abstract keyword in java, abstract method, java abstraction

• Final and Super,this in java

  What is the Final Keyword in Java? As the word-final suggests, we can finalize a certain entity using the final keyword. In other words, anything declared final in the java program cannot be modified. The final keyword restricts the access of the user to modify the data. A variable that is declared as a final…

  Arokiya Kithiyon

  August 17, 2022

  java topic

  final, super, super vs super(), super(), this, this vs this()

• Inheritance in java

  Definitions: A class that is derived from another class is called a subclass (also a derived class, extended class, or child class). The class from which the subclass is derived is called a superclass (also a base class or a parent class). Excepting Object, which has no superclass, every class has one and only one direct…

  Arokiya Kithiyon

  August 9, 2022

  java topic, OOPs concepts

  inheritance, oops, oops concept, single inheritance, types of inheritance

• If condition and while loop in java

  The if-then and if-then-else Statements The if-then Statement The if-then statement is the most basic of all the control flow statements. It tells your program to execute a certain section of code only if a particular test evaluates to true. For example, the Bicycle class could allow the brakes to decrease the bicycle’s speed only…

  Arokiya Kithiyon

  August 8, 2022

  java topic, Loops in java

  if, Loops in java, while