A primitive data type representing whole numbers.

A primitive data type representing decimal numbers.

A primitive data type representing true or false values.

An arithmetic operator (%) that returns the remainder of a division.

An operator that combines an arithmetic operation and assignment (e.g., +=, -=).

An operator (x++) that returns the original value of x, then increments it.

An operator (++x) that increments x, then returns the new value.

The process where the second condition in AND/OR operations isn't evaluated if the result is already known.

A sequence of characters, immutable in Java.

A blueprint for creating objects, containing data (fields) and behavior (methods).

An instance of a class, created using the new keyword.

A special method used to initialize objects, having the same name as the class.

An ordered collection of elements of the same type with a fixed size.

A dynamic, resizable array in Java.

A mechanism where a class (subclass) inherits properties and methods from another class (superclass).

The ability of an object to take on many forms, achieved through inheritance and method overriding.

A method that calls itself, requiring a base case to stop the recursion.

1. Declare a variable of the class type. 2. Use the new keyword followed by the class constructor. 3. Assign the result to the variable.

1. Use a for loop or enhanced for loop. 2. Initialize a counter (if using a for loop). 3. Access each element using its index.

1. Use nested for loops. 2. The outer loop iterates through rows. 3. The inner loop iterates through columns.

1. Use the super() keyword in the subclass constructor. 2. Provide the necessary parameters that match the superclass constructor's signature. 3. This call must be the first statement in the subclass constructor.

1. Identify the base case(s). 2. Define the recursive step, calling the method itself with a modified input. 3. Ensure the recursive step moves towards the base case.

Arrays: Fixed size, primitive and object types, length property. ArrayLists: Dynamic size, object types only, methods like add(), remove(), size().

==: Compares object references. .equals(): Compares the content of the strings.

for: Used when the number of iterations is known. while: Used when the number of iterations is unknown, and depends on a condition.

Overloading: Multiple methods with the same name but different parameters in the same class. Overriding: A subclass providing a different implementation for a method already defined in its superclass.

x++: Post-increment, returns the original value then increments. ++x: Pre-increment, increments then returns the new value.