Quantum Computing – The Next Tech Revolution Technology has evolved rapidly over the last few decades—from bulky mainframe computers to powerful smartphones in our pockets. Yet, despite these advances, traditional computers are approaching their physical limits. This is where quantum computing enters the scene, promising to revolutionize the way we process information and solve complex problems. What Is Quantum Computing? Quantum computing is a new paradigm of computing that uses the principles of quantum mechanics, a branch of physics that explains how matter and energy behave at the smallest scales. Unlike classical computers, which use bits that represent either 0 or 1, quantum computers use qubits. Qubits can exist in multiple states simultaneously, thanks to a property called superposition. Additionally, qubits can be interconnected through entanglement, allowing them to share information instantaneously. These unique properties give quantum computers immense computational power....
Define class in Java
In java, a class is a template used to create object and define the data type. It acts as a building block for java language oriented systems. All java codes are defined in a class. A class has variables and methods.
Variables are attributes which define the state of class.
Methods are the place where the exact business logic has to be done. It contains a set of statements or instructions to satisfy the particular requirement.
Eg:
public class Addition // class name declaration
{
int a= 5; // variable declaration
int b= 5;
public void add()
{ // Method declaration
int c=a+b;
}
}
What do you mean by object ?
Object is a basic unit of Object oriented programming and represents the real life entities. A typical java program creates many objects, which interact each other by invoking methods. A java object is a combination of data and procedures working on the available data. An object has a state and behavior. The state of an object is stored in fields(variables),while methods (functions) displays the object behavior. Objects are created from templates known as classes. In java an object is created by using the keyword 'new'.
What is immutable object ?
Immutable object are java object whose object cannot be modified once created. Any modification in immutable object result in new object. For example String is immutable in java. Mostly immutable are also final in java, inorder to prevent sub class from over ridding methods in java which can compromise immutability. You can achieve same functionality by making members as non final but private and not modifying them except in constructor.