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Q. Explain where variables are created in memory ❓ ➡️ In Java, variables are created in memory based on their scope and type. Here's a breakdown: ============================== 🟢 Primitive local variables: Created on the Stack. - Int, byte, short, long, float, double, boolean, char. - Stored in the stack frame of the current method. - Removed from the stack when the method returns. 🟢 Reference local variables: Created on the Stack (reference) and *Heap* (object). - Objects, arrays, strings. - Reference (memory address) stored on the stack. - Actual object stored on the heap. 🟢 Instance variables: Created on the Heap. - Non-static fields of a class. - Stored in the heap memory, along with the object instance. 🟢 Static variables: Created on the Method Area (permanent generation). - Static fields of a class. - Shared by all instances of the class. - Loaded into memory when the class is loaded. 🟢 Method parameters: Created on the Stack. - Passed to a method. - Stored in the stack frame of the method. ============================== Note ⬇️ ============================== - Stack: A region of memory that stores data in a Last-In-First-Out (LIFO) order. Used for local variables, method parameters, and method return addresses. - Heap: A region of memory that stores data in a hierarchical structure. Used for objects, arrays, and strings. - Method Area: A region of memory that stores class metadata, including static variables.

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Q. What is assert keyword in Java ❓ The assert keyword is a debugging statement in Java that checks if a condition is true and throws an AssertionError if it's false. It's used to validate assumption and catch unexpected errors during development and testing.

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👨‍💻 SQL Quiz Which SQL statement is used to remove a record from a table? A. REMOVE B. DELETE C. ERASE ⬇️ Guess the correct option in the comments!

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