Java Edge Cases & Best Practices

Repository with simple Java examples focused on understanding how the language works in practice.

The goal is to explore common pitfalls, internal behavior and best practices used in real-world scenarios.

---

📚 Content

• String comparison (== vs .equals())
• Primitive vs Wrapper types
• Null handling
• Pass-by-value behavior
• String Pool and immutability
• Static vs instance context
• Arrays vs Collections

---

📅 Progress

• Day 1 - String Comparison
• Day 2 - int vs Integer
• Day 3 - NullPointerException
• Day 4 - Pass by Value
• Day 5 - String Immutability
• Day 6 - Static vs Instance
• Day 7 - Arrays vs ArrayList
• Day 8 - equals() vs hashCode()
• Day 9 - Exception Handling

---

🚀 How to Run

1. Compile

javac src/StringComparison.java

2. Run

java -cp src StringComparison

---

🎯 Objective

Practice Java daily by writing small examples that:

• Improve logic and understanding
• Reinforce core concepts
• Simulate real interview topics

---

🧪 Example

• String Comparison — == vs .equals()
• int vs Integer — primitive vs wrapper behavior
• NullPointerException — null reference behavior
• Pass by Value — how Java handles method parameters
• String Immutability — how Strings behave internally
• Static vs Instance — shared class members vs object members
• Arrays vs ArrayList — fixed-size vs dynamic collections
• equals() vs hashCode() — object comparison and hash collections
• Exception Handling — try, catch and finally behavior

📄 See /docs for detailed explanations

---

👨‍💻 Author