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SAHow to MASTER Java for FREE #coding #java #compsci #fyp
@sajjaad.khader
#Java Coding Challenges 2026
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CODid you know that Java behaves differently when comparing wrapper classes like Integer? 🤯
In this quiz, we test a simple line of code:
Integer a = 128;
Integer b = 128;
System.out.println(a == b);
Most beginners expect true, but the correct output is: ❌
👇 Watch the video to learn why Java outputs false here!
This happens because of Integer caching mechanism in Java — only values between -128 to 127 are cached. Anything outside that range creates a new object, so == compares references, not values. 🧠💡
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🎯 You'll Learn:
✔ Java wrapper class behavior
✔ Integer caching
✔ Difference between == and .equals()
✔ Common Java interview question
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💬 Comment below:
Did you get it right? 😎
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🔍 Keywords:
Java quiz, Integer caching, Java interview question, wrapper classes, Java comparison, Java coding challenge, Java beginner tips, Java programming trick
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📌 Hashtags:
#Java #JavaQuiz #CodingQuiz #ProgrammerLife #JavaInterview #JavaTips #CodingChallenge #LearnJava #DeveloperCommunity #ProgrammingFacts #JavaDeveloper #CodeSmart #SoftwareEngineer #TechLearning #programminghumor
@codewithprashantt
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PYCan you solve this Python challenge?
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Subscribe for regular Python coding questions and improve your problem-solving abilities.
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Run the quiz in your computer!
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CUJava developer❤️🤯
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GEJava Projects to get you hired ✅
Source Code :
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EN🧠 Java Increment MCQs 😈 | Most People Fail This
1️⃣ a++ + ++a → 12 ✅
2️⃣ ++a + ++a → 13 ✅
3️⃣ a++ + a++ → 11 ✅
😳 Looks easy… logic says otherwise
💬 Comment your score: 0/3 | 1/3 | 2/3 | 3/3
1️⃣
int a = 5;
int b = a++ + ++a;
👉 a++ → uses 5, then a = 6
👉 ++a → increments first → 7
✅ b = 5 + 7 = 12 → Answer: C
⸻
2️⃣
int a = 5;
int b = ++a + ++a;
👉 First ++a → 6
👉 Second ++a → 7
✅ b = 6 + 7 = 13 → Answer: C
⸻
3️⃣
int a = 5;
int b = a++ + a++;
👉 First a++ → 5 (a = 6)
👉 Second a++ → 6 (a = 7)
✅ b = 5 + 6 = 11 → Answer: B
👥 Tag a friend who guesses instead of calculating 😅
❤️ Save this for interview revision
➡️ Follow for daily Java MCQs & tricky logic questions
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CO4 Websites To Gamify Learning How To Code👾
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866.1K
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SHI always thought coding was kinda boring—until I found this site that actually makes it fun. If you’ve ever wanted to learn but felt overwhelmed, this is a game-changer.
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