College Libray

Java OOPs Concepts              Object-oriented programming (OOP) is a programming paradigm based on the concept of "objects", which can contain data in the form of fields (attributes or properties), and code in the form of procedures (methods or functions). Java is a popular programming language that fully supports object-oriented principles. Here are some key concepts of object-oriented programming in Java: Object Class Inheritance Polymorphism Abstraction Encapsulation  what the an Object and Class ?       Classes and Objects: In Java, everything is encapsulated within classes. A class is a blueprint or template for creating objects. Objects are instances of classes.      In object-oriented programming (OOP), an object is a fundamental unit of a program. An object represents a real-world entity, such as a person, a car, a bank account, etc., or an abstract concept, such as a data structure, a netw...

            Java supports rich set of operators. we have already used several of them such as = , +, -, and * . an operator is a symbol that tells a computer to perform certain mathematical or logical manipulations. Operators are used in programs to manipulate data and variables. Java operators can be classified into   1.  Arithmetic operators  2. Relational Operators  3. Logical Operators  4. Assignment Operators  5. Increment and Decrement operators  6. Conditional Operators  7. Bitwise operators  8. Special operators.  1.  Arithmetic operators            Arithmetic operators are used in mathematical expressions in the same way that they are used in algebra. Java provides all the basic arithmetic operations.The following table lists the arithmetic operators: Addition (+) Subtraction (-) Multiplication (*) Division (/) Modulus (%)  program : 01 output:01...

 Java supports several data types that can be broadly categorized into two groups: primitive data types and reference data types. Here's an overview of Java data types:  Primitive Data Types: 1. **Integral Types:**    - **byte:** 8-bit signed integer. Range: -128 to 127.    - **short:** 16-bit signed integer. Range: -32,768 to 32,767.    - **int:** 32-bit signed integer. Range: -2^31 to 2^31-1.    - **long:** 64-bit signed integer. Range: -2^63 to 2^63-1. 2. **Floating-Point Types:**    - **float:** 32-bit floating-point. Example: 3.14f.    - **double:** 64-bit floating-point. Example: 3.14. 3. **Character Type:**    - **char:** 16-bit Unicode character. Example: 'A', '\u0041'. 4. **Boolean Type:**    - **boolean:** Represents true or false values.  Reference Data Types: 1. **Class Types:**    - Any user-defined class. 2. **Array Types:**    - Arrays of primitive data types...