Java Core in Practice with 120+ Exercises & Quizzes – 2025

Java Core, Object Oriented Programming (OOP), Collections, Maps, Exceptions, Generics, IO, and Concurrency Explained. What you will learn. Java. Java Core. Java Development Kit (JDK) setup. ... Comparison and logical operators usage. Operator precedence understanding. if-else statement usage. Switch statement usage. Loop usage (for, while, do-while) Loop control (break, continue) Method definition and invocation. Method overloading.

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Java Basics in Practice with 35+ Exercises & Quizzes – 2025

Java Basics: IDEs, Data Types, Variables, Operators, if-else, switch Statements, Loops, Methods, Arrays, Strings What you will learn Java Java Development Kit (JDK) setup Basic Java program execution Integrated Development Environment (IDE) understanding Primitive data types usage Variable declaration and initialization Type casting Primitive and non-primitive data type differentiation Array and string declaration Variable naming conventions Variable scope Console…

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Write a program to reverse digits of a number - GeeksforGeeks

Time Complexity - O(log n) Space Complexity - O(1) . Using Recursion. This approach uses a recursive function reverseDigits called with the number n and an accumulator variable revNum to store the reversed number, and basePos to keep track of the place value (ones, tens, hundreds, etc.). In each recursive call, the function processes the current digit by dividing n by 10 to reduce it and adding the last digit (n % 10) to revNum, scaled by the basePos.The basePos is then multiplied by 10 to ...

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Understanding Java Boolean Types and Operators for Beginners - Course Hero

2 The boolean Type and Operators Often in a program you need to compare two values, such as i > j. Java provides six comparison operators (also known as relational operators) that can be used to compare two values.

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How to write an even or odd program in java? - Stack Overflow

How to fix my Even-Odd Program java code it writes even or odd but also the number. 0. String of only even numbers and only odd numbers. 1. How to write a code that prints odd-even numbers using for-each loop on an array in java. 0. ... Modus Ponens and A Hilbert-style system for Kleene's 3-valued logic Why de here instead of con? Group structure on Galois group of Hilbert class field Why are there negative prices for electricity? ...

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Java And PHP Complete Course For Java And PHP Beginners- (Free Course)

Section 1: Java Complete Course. Take-Away Skills:This course is a great introduction to both fundamental programming concepts and the Java programming language. By the end, you’ll be comfortable programming in Core Java.This Course is the first of a series of courses that make up the Core Java Specialization.

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Difference Between == Operator and equals() Method in Java

How the == Operator Works in Java. The == operator in Java has dual behavior depending on what types you‘re comparing. This duality is crucial to understand. Primitive Type Comparison with == When you use == with Java‘s primitive types (int, boolean, char, double, etc.), it compares their actual values:

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Code Java in 5 Hours: A Complete Beginner’s Guide

In today’s tech-driven world, understanding how to code is a superpower — and Java is one of the most powerful, versatile, and widely-used programming languages out there. This beginner-friendly course is designed to give you a solid foundation in Java programming, whether you’re just starting out or looking to transition into a tech career.. Through structured lessons and practical examples, this course takes you from absolute beginner to writing real Java programs — even building a ...

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Java Course in Delhi ( #1 Best Training Institute ) - Techstack

Operators in Java; Comments; Looping Statements; Conditional Statements; ... For java programming, if you have the knowledge of the C language then it is easier to learn the concepts. But C is recommended but not mandatory. Java is an object oriented language and if you are familiar already with object oriented programming, Java becomes so much easier to learn. ... But Java is not a 100% object oriented language because it uses eight primitive data types which are byte, char, boolean, double ...

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Final-2 (pdf) - CliffsNotes

6 Question 3.2: The following Java program named SumOfSecondaryDiagonalClass that deals with the values of the secondary diagonal of a square matrix. It has the following tasks: a. a method named sumOfSecondaryDiagonal that takes as an argument one square 𝑛 × 𝑛 2D array called m with double values and computes and returns the sum of all the numbers in the secondary diagonal in the matrix m .

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