The ByteSized Logic

Java Constructors: Default and Parameterized (With Examples) ✨ Quick Summary In this post, you’ll learn what Constructors are in Java and why they are used. We will cover default constructors , parameterized constructors , and how constructors help in initializing objects with simple examples. Java OOP Constructor OOP Concepts In our previous post, we learned about Java OOP and understood the basics of Class and Object . Now it’s time to learn an important OOP concept: Constructors . 1) What is a Constructor? A constructor is a special method used to initialize objects in Java. It is called automatically when an object is created. Example: Student s1 = new Student(); When this line runs, the constructor gets called automatically. 2) Constructor Rules in Java ✅ Constructor name must be same as the class name ✅ Constructor does not have a return type (not even void) ✅ Constructor is called aut...

Java OOP Concepts: Class and Object (Beginner Guide with Examples) ✨ Quick Summary In this post, you’ll learn the basics of Object -Oriented Programming (OOP) in Java . We will cover what a Class is, what an Object is, how to create them, and understand OOP with simple real-life examples. Java OOP Class Object In our previous post, we learned about Java Methods and how to create reusable code. Now it’s time to start the most important part of Java: Object-Oriented Programming (OOP) . Java is an OOP-based language , which means Java programs are built using: ✅ Classes ✅ Objects ✅ Methods ✅ Inheritance, Polymorphism, Encapsulation, Abstraction In this post, we will start with the basics: Class and Object . 1) What is a Class? A Class is like a blueprint or template. It defines what an object will have. Example: A class is like a blueprint of a Car . The blueprint contains: Car name Car col...

Java Methods (Functions): Complete Beginner Guide (With Examples) ✨ Quick Summary In this post, you’ll learn what Methods are in Java and why they are important. We will cover method creation , method calling , parameters , return types , and real examples in a beginner-friendly way. Java Beginner Methods Functions In our previous post, we learned about Java Strings and how to work with text. Now, let’s learn one of the most important topics in Java: Methods . A method is a block of code that performs a specific task. Instead of writing the same code again and again, we create methods and reuse them. 1) Why Do We Need Methods? Methods make your code: ✅ Clean and readable ✅ Easy to reuse ✅ Easy to maintain ✅ Less repeated code 2) Java Method Syntax A method has: Return type Method name Parameters (optional) Method body Syntax returnType methodName(parameters) { // code to...

Java Strings: Complete Beginner Guide (With Examples) ✨ Quick Summary In this post, you’ll learn what Strings are in Java and how to work with text. We will cover creating strings , string methods , comparison , and common examples in a simple beginner-friendly way. Java Beginner Strings Text Handling In our previous post, we learned about Java Arrays and how to store multiple values in one variable. Now let’s learn about another super important topic in Java: Strings . A String in Java is used to store text like names, sentences, passwords, emails, etc. 1) Creating a String in Java There are two main ways to create a string: Using String Literal Using new Keyword Example public class StringCreateExample { public static void main(String[] args) { String name1 = "The Logic Byte Tech"; String name2 = new String("Java Programming"); System.out.println(name...

Java Arrays: Store Multiple Values in One Variable (With Examples) ✨ Quick Summary In this post, you’ll learn what Arrays are in Java and how to use them to store multiple values in a single variable. We will cover array declaration , initialization , accessing elements , and looping through arrays with easy examples. Java Beginner Arrays Programming In our previous post, we learned about Java Loops and how to repeat tasks in Java. Now let’s learn another important concept: Java Arrays . An array is used to store multiple values of the same data type in a single variable. 1) Why Do We Need Arrays? Imagine you want to store marks of 5 students. Without arrays, you would write: int m1 = 90; int m2 = 85; int m3 = 70; int m4 = 88; int m5 = 95; This is not a good approach. Arrays make it easier. 2) Declaring an Array in Java There are two common ways to declare an array: Type Exa...

Java Loops: for, while and do-while (With Examples) ✨ Quick Summary In this post, you’ll learn how to repeat tasks in Java using Loops . We will cover for , while , and do-while loops with simple beginner-friendly examples. Java Beginner Loops for / while / do-while In our previous post, we learned about Conditional Statements like if-else and switch. Now, let’s learn one of the most important concepts in programming: Loops . A loop is used when you want to repeat a block of code multiple times. 1) for Loop The for loop is used when you already know how many times you want to repeat a task. Syntax for(initialization; condition; increment/decrement) { // code to repeat } Example: Print numbers from 1 to 5 public class ForLoopExample { public static void main(String[] args) { for (int i = 1; i <= 5; i++) { System.out.println(i); } } } 2) while Loop The while...

In our previous post, we learned about Java Operators and how to perform math, comparisons, and logic. ✨ Quick Summary Now it’s time to learn something even more important: how Java makes decisions . In Java, we use Conditional Statements to run code based on conditions. In this blog, you will learn: ✅ if statement ✅ if-else statement ✅ else-if ladder ✅ nested if ✅ switch statement 1) if Statement The if statement checks a condition. If the condition is true , the code inside it will run. public class IfExample { public static void main(String[] args) { int age = 20; if (age >= 18) { System.out.println("You are eligible to vote!"); } } } 2) if-else Statement The if-else statement runs one block if the condition is true, otherwise it runs the else block. public class IfElseExample { public static void main(String[] args) { int number = 10; if (n...