Java Conditional Statements: if, if-else, if-else-if, switch

🚀 Day 7 of My Java Learning Journey Today I learned about Control Flow Statements in Java, focusing on Conditional Statements. 📌 These statements help control the flow of execution based on conditions. 🔹 Types of Conditional Statements I Covered: 🔸 1. if Statement Executes code only if condition is true 🔸 2. if-else Statement Executes one block if true, another if false 🔸 3. else-if Ladder Used to check multiple conditions 🔸 4. Nested if if statement inside another if 💡 Example: int marks = 75; if(marks >= 80){ System.out.println("Excellent"); } else if(marks >= 50){ System.out.println("Pass"); } else { System.out.println("Fail"); } Understanding these concepts is very important for building logic in real-world applications. Building consistency step by step 💪 🔗 Check my code here: https://lnkd.in/gDP4A9r6 If you are also learning Java, let’s connect and grow together 🤝 #Java #JavaDeveloper #Programming #CodingJourney #LearningInPublic #SoftwareDevelopment

🔹 ArrayList vs Vector in Java –. What’s the Difference? While learning Java Collections, I explored the difference between ArrayList and Vector. Both are dynamic arrays, but they behave differently in important ways. ✅ ArrayList • Not synchronized (not thread-safe) • Faster performance • Introduced in Java 1.2 • Grows by 50% when capacity is full ✅ Vector • Synchronized (thread-safe) • Slower due to synchronization • Legacy class (introduced in Java 1.0) • Doubles its size when capacity is full 💡 Key Takeaway: In modern Java development, ArrayList is preferred for better performance. Vector is mainly used for backward compatibility. Understanding small differences like these helps write efficient and scalable code 🚀 Thank you Anand Kumar Buddarapu Sir for your guidance and motivation. Learning from you was really helpful! 🙏 Thank you Uppugundla Sairam Sir and Saketh Kallepu Sir for your guidance and inspiration. Truly grateful to learn under your leadership. 🙏 #Java #CoreJava #JavaCollections #Programming #SoftwareDevelopment #Learning

Day 27-What I Learned In a Day(JAVA) Java Revision – Decision Making Statements Today I revised all the Decision Making Statements in Java as part of my preparation. I went through concepts like: ✔️ if statement ✔️ if-else statement ✔️ else-if ladder ✔️ nested if ✔️ switch statement Understanding these concepts helps in controlling the flow of a program based on different conditions. Practicing them improved my logical thinking and programming skills. #Java #Programming #LearningJava #CodingJourney #StudentDeveloper

Day 28 -What I Learned in a Day(JAVA) Today I started learning Looping Statements in Java. Loops are used to execute a block of code repeatedly until a certain condition becomes false. They help reduce code repetition and make programs more efficient. In Java, there are mainly three types of loops: • while loop • do-while loop • for loop Today I focused on the while loop. 🔹 What is a While Loop? A while loop executes a block of code repeatedly as long as the condition is true. The condition is checked before the loop executes, so if the condition is false initially, the loop will not run. Syntax of While Loop: initialization; while(condition) { // statements increment / decrement; } What I Practiced Today: ✔ Practiced 3 basic while loop programs ✔ Built a calculator program using while loop and switch statement ✔ Learned how loops control program flow and reduce repetitive code Every day I’m taking small steps to improve my Java programming skills and strengthen my understanding of core concepts. Practiced 👇 #Java #JavaLearning #Programming #CodingJourney #Loops #WhileLoop

While learning core Java concepts, I recently explored the Collection Hierarchy, and it gave me a clearer understanding of how Java manages and organizes groups of objects efficiently. The Java Collection Framework provides a set of interfaces and classes designed to store, retrieve, and manipulate data in different ways depending on the requirement. 🔹 List – Maintains insertion order and allows duplicate elements. Examples: ArrayList, LinkedList, Vector, Stack. 🔹 Set – Stores only unique elements and prevents duplication. Examples: HashSet, LinkedHashSet, TreeSet. 🔹 Queue – Designed for processing elements typically in FIFO (First In First Out) order. Examples: PriorityQueue, ArrayDeque. Understanding this hierarchy helps developers choose the right data structure based on ordering, uniqueness, and performance requirements. #Java #JavaCollections #SoftwareDevelopment #JavaDeveloper #Programming #Learning

🚀 Day – Java Learning Update ⏳ 🎯 Understanding Switch Case in Java Today, I learned about the Switch Case statement in Java, which is used to execute different blocks of code based on the value of a variable or expression. It is mainly used when we have multiple conditions to check for a single variable, making the code more readable compared to many if-else statements. 🔹 What is Switch Case? The switch statement allows a variable to be tested against multiple possible values called cases. ✔ Each case represents a possible value ✔ break stops execution after a case runs ✔ default runs if no case matches 🔹 Syntax of Switch Case switch(expression) { case value1: // code block break; case value2: // code block break; case value3: // code block break; default: // default code block } 🧑💻 Task Practiced: Traffic Signal Program I implemented a simple program using switch case to represent a traffic signal. #Java #CoreJava #JavaFullStack #SwitchCase #Programming #SoftwareDeveloper #LearningJourney 10000 Coders Meghana M

✨ DAY-39: 🌳 Understanding DRY Principle in Java through Nature While learning Java, I came across the powerful concept of DRY (Don’t Repeat Yourself) — and the best way I visualized it is through a tree. In nature, a tree doesn’t grow multiple trunks for the same purpose. Instead, it has one strong trunk that supports many branches. 💡 Similarly in Java: Avoid writing the same code again and again Create reusable methods or functions Maintain a single source of truth 🌿 Without DRY: Imagine creating multiple trees for every branch → messy, hard to maintain ❌ 🌿 With DRY: One strong tree (method/class) → multiple branches (reuse) ✅ 👨💻 Java Example: Instead of repeating logic: System.out.println("Welcome"); System.out.println("Welcome"); Use DRY: public void printMessage() { System.out.println("Welcome"); } ✨ Call the method whenever needed! 🚀 Key Benefits: ✔ Cleaner code ✔ Easier maintenance ✔ Better readability ✔ Reduced errors 🌱 Write once, reuse everywhere — just like a tree grows efficiently from a single root. #Java #CleanCode #DRYPrinciple #Programming #CodingJourney #SoftwareDevelopment

💻 Day 13 – File Handling in Java Today I explored File Handling in Java, which allows programs to create, read, write, and manage files. This is an important concept because real-world applications often need to store and retrieve data from files. Things I learned today: 🔹 How to create a file using File class 🔹 Writing data into a file using FileWriter 🔹 Reading data from a file 🔹 Handling errors using IOException File handling helps programs store information permanently instead of losing it when the program ends. 💡 Key takeaway: File handling enables Java programs to interact with external data and manage information efficiently. Learning something new every day and strengthening my Java fundamentals step by step 🚀 #Java #FileHandling #Programming #LearningInPublic #CodingJourney #ComputerScience #Day13

Day 26: Checking Anagrams in Java While practicing Java problem solving, I worked on a simple yet interesting problem — checking whether two strings are Anagrams. Anagrams are words formed by rearranging the letters of another word using all the original characters exactly once. Examples: silent and listen throw and worth 🧠 Approach I Used First, check if both strings have the same length. If not, they cannot be anagrams. Convert both strings to lowercase and then to character arrays. Sort both arrays using Arrays.sort(). Compare each character of both arrays. If all characters match, the strings are anagrams. 🧪 Example Output silent & listen → Anagrams aabb & aaab → Not Anagrams What I Practiced String manipulation in Java Converting strings to character arrays Using Arrays.sort() Iterating and comparing array elements Small problems like this help strengthen core Java fundamentals and problem-solving skills. #Java #Programming #ProblemSolving #CodingPractice #DSA Raviteja T Mohammed Abdul Rahman 10000 Coders

DAY 30: CORE JAVA 🚀 Understanding "this()" vs "super()" in Java – A Quick Guide! While working with constructors in Java, two important calls often come into play: "this()" and "super()". Though they may seem similar, they serve very different purposes. 🔹 "this()" Call - Used to achieve constructor chaining within the same class. - Helps reuse constructors in a clean and efficient way. - It is optional and depends on the programmer’s need. 🔹 "super()" Call - Used to achieve constructor chaining between parent and child classes. - It is automatically invoked by Java (default behavior). - Always placed on the first line of the child class constructor. ⚠️ Important Rule 👉 "this()" and "super()" cannot be used together in the same constructor, as both must be the first statement. 💡 Key Insight Subclass variables always have higher priority than superclass variables. To access parent class variables when both have the same name, we use "super". 📌 Mastering these concepts is essential for writing clean and efficient code using inheritance in Java. TAP Academy #Java #OOP #Programming #CodingTips #SoftwareDevelopment