Suresh Codes

Suresh Codes Software Architect | 20+ Years
Production-Grade Development
Java • Spring Boot • Microservice
🇮🇳 Tamil & English

25/08/2026

🔥 **Daily Core Java Aptitude Question!**

🔥 Daily Java Question: How Do You Declare a Constant Variable in Java?
How do you declare a constant variable in Java?

Look carefully at the four options and **comment your answer before checking the explanation.** 👇

💡 Quick learning point:

The `final` keyword prevents a variable from being reassigned after initialization.

When we need a **class-level constant shared across all objects**, the commonly used declaration is:

`static final int MAX_SIZE = 100;`

Here:
• `final` → the variable cannot be reassigned
• `static` → the variable belongs to the class rather than individual objects

Constant names are conventionally written in **UPPER_CASE**, such as `MAX_SIZE`.

⚠️ `const` is a reserved keyword in Java, but Java does not use it for declaring constants.

🎓 Core Java Pre-Recorded Course available @ ₹1499/-
✅ Detailed concept explanations
✅ Practical Java examples
✅ Doubt-clearing support

📞 For details: +91 9500754368

Follow this page for daily Java questions, tips and learnings! ☕🚀

24/08/2026

Java Stream API Deep Dive 🔥 | How filter(), map() & forEach() Really Work

Do you know what actually happens when filter(), map(), and forEach() execute inside a Java Stream pipeline?
In this reel, I explain the internal connection between Stream API methods and Java Functional Interfaces in a simple way.
You will understand:
- filter() works with Predicate and executes Predicate.test()
- map() works with Function and executes Function.apply()
- forEach() works with Consumer and executes Consumer.accept()
- How elements move through the Stream pipeline step by step
- How Lambda Expressions provide behavior to these Functional Interfaces
This is an important concept if you want to understand how Java Stream API actually works, rather than simply memorizing the methods.
Full Vidoe at : https://youtu.be/mOYbtcoTVdo
🎥 This reel contains only a short part of the explanation.
👉 Watch the full video on my YouTube channel for the detailed explanation with examples.
🎓 Core Java Pre-Recorded Course available @ ₹1500/- with doubt-clearing support
📱 WhatsApp: +91 95007 54368
Follow for more Core Java, Java 8, Stream API, Lambda Expressions, Functional Interfaces, and Java interview concepts.

20/08/2026

Java 8 Stream API Introduction in Tamil | Where Can We Use Stream API?

Where can we use Java 8 Stream API?
Stream API is useful when we want to process a group of data. The source of that data does not always have to be a Java Collection.
For beginners, we can understand common Stream data sources as:
Arrays → Collections → Files → Stream Processing
Once we get the data into a Stream, we can perform operations such as filtering, transforming, sorting and consuming the results in a declarative way.
In this short Tamil session, I explain the basic purpose of Stream API and where we can use it before moving into practical Stream operations.
🎓 Core Java Pre-Recorded Course in Tamil Available
₹1499/- | Lifetime Access | Doubt Clearing Support
📱 Contact: +91 9500754368
Follow this page for regular Java learnings, practical examples and Java tips.

20/08/2026

🔥 Daily Java Aptitude Question

Do you really understand Java's String Pool and intern() method? 🤔

Look at today's code carefully and predict the output.

A) true
B) false
C) Compilation Error
D) Runtime Exception

💬 Comment your answer below!

Don't just guess — think about what happens when intern() is called and then the references are compared using ==.

✨ Follow this page for daily new Java tips, questions and learnings!

🎓 Core Java Pre-Recorded Course @ ₹1499/-
✅ Practical Code Examples
✅ Detailed Video Lessons
✅ Learn at Your Own Pace
✅ Doubt-Clearing Support

📞 Course Details: +91 9500754368

18/08/2026

🔥 **Daily Java Aptitude Question!**

Do you know what happens to a `transient` field when a Java object is serialized?

Look at the code carefully, choose the correct option, and **comment your answer below!** 👇

This question tests your understanding of the Java `transient` keyword and Object Serialization — an important Core Java concept.

💡 Follow this page for daily Java questions, tips, concepts, and practical learning.

🎓 **Core Java Pre-Recorded Course Available**
✅ Beginner-friendly explanations
✅ Practical code examples
✅ Detailed video lessons
✅ Doubt-clearing support

Keep learning. Keep practicing Java! ☕🚀

17/08/2026

Java Lambda Expression Quiz 🔥 | Can You Answer This Java 8 Question?

📝 Description

🔥 Daily Java Question!

Which type of interface is commonly used with Lambda Expressions in Java?

Test your Java 8 knowledge and comment your answer: A, B, C, or D. 👇

Questions like this help strengthen your understanding of Java 8, Lambda Expressions, and Functional Interfaces.

Follow this page for daily new Java tips, questions, and learnings! 🚀

Background song by Suresh Stalin
Music Suno AI

17/08/2026

🔥 **Daily Java Question | Test Your Java Knowledge! ☕**

Can you find the correct output of this Java program? 🤔

We have a `List` containing **10, 20, and 30**. What will `list.size()` return?

A) 2
B) 3
C) 30
D) Compilation Error

💬 **Comment your answer below — A, B, C, or D!**

Don't check the comments before answering! 😄

📚 Follow this page for **daily new Java questions, tips and learnings!**

Address

Chennai

Website

Alerts

Be the first to know and let us send you an email when Suresh Codes posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Shortcuts

Share

Category