AOOP REVIEWER

<p>A special method called to create an instance of a class. (B)</p> Signup and view all the answers

<p>By hiding unnecessary details from the user. (A)</p> Signup and view all the answers

<p>Methods (A)</p> Signup and view all the answers

<p>Objects need direction from others to function. (D)</p> Signup and view all the answers

<p>A class is a blueprint, and an object is an instance of that blueprint. (A)</p> Signup and view all the answers

<p>Assigning a subclass to its superclass type. (D)</p> Signup and view all the answers

<p>static (D)</p> Signup and view all the answers

<p>Two objects are independently associated but can exist separately. (B)</p> Signup and view all the answers

<p>Inheritance from a parent class. (A)</p> Signup and view all the answers

<p>To provide abstraction over types. (A)</p> Signup and view all the answers

<p>Converting an object's state into a byte stream. (C)</p> Signup and view all the answers

<p>Difficulties in testing individual components. (B)</p> Signup and view all the answers

<p>To manage the core functionality and data logic. (B)</p> Signup and view all the answers

<p>One object relies on the other for its existence. (B)</p> Signup and view all the answers

<p>To ensure that objects are serialized correctly. (C)</p> Signup and view all the answers

<p>protected (C)</p> Signup and view all the answers

<p>A set of method signatures with no implementations. (D)</p> Signup and view all the answers

<p>Using the 'extends' keyword for upper bounds. (B)</p> Signup and view all the answers

<p>void update(Observable obj, Object data) (A)</p> Signup and view all the answers

<p>Controller (A)</p> Signup and view all the answers

<p>A class defined inside another class. (C)</p> Signup and view all the answers

<p>To notify observers when the model changes. (C)</p> Signup and view all the answers

<p>Data Encryption (B)</p> Signup and view all the answers

<p>CREATE DATABASE database_name; (B)</p> Signup and view all the answers

<p>Anonymous Inner Class (B)</p> Signup and view all the answers

<p>Store (D)</p> Signup and view all the answers

<p>The conversion of an object into a byte stream. (A)</p> Signup and view all the answers

<p>Attributes or characteristics of the entity. (D)</p> Signup and view all the answers

<p>Creates and manipulates database objects. (D)</p> Signup and view all the answers

<p>Database Connectivity (D)</p> Signup and view all the answers

<p>Implementing a unique listener for a button click. (B)</p> Signup and view all the answers

<p>It contains the data and business logic of the application. (A)</p> Signup and view all the answers

<p>To free any memory that is no longer needed (B)</p> Signup and view all the answers

<p>byte (C)</p> Signup and view all the answers

<p>protected (C)</p> Signup and view all the answers

<p>Method overriding (C)</p> Signup and view all the answers

<p>'\u0000' (B)</p> Signup and view all the answers

<p>INT (B)</p> Signup and view all the answers

<p>Field values must be unique across instances (A)</p> Signup and view all the answers

<p>To remove rows from a table (A)</p> Signup and view all the answers

<p>Increments the field's value automatically with each new entry (C)</p> Signup and view all the answers

<p>SELECT * FROM students WHERE year_level = 1; (A)</p> Signup and view all the answers

<p>UPDATE students SET year_level = year_level + 1 WHERE program = 'Information Technology'; (A)</p> Signup and view all the answers

<p>Type 3: JDBC-Net pure Java (A)</p> Signup and view all the answers

<p>DROP DATABASE (B)</p> Signup and view all the answers

<p>Removes all rows from the students table (A)</p> Signup and view all the answers

<p>SELECT DISTINCT program FROM students WHERE name LIKE 'X%'; (D)</p> Signup and view all the answers

<p>To connect Java programs to a database (D)</p> Signup and view all the answers

<p>NOT NULL (D)</p> Signup and view all the answers

<p>INSERT (A)</p> Signup and view all the answers

<p>A language for manipulating data within the database (A)</p> Signup and view all the answers

<p>An int representing affected rows (A)</p> Signup and view all the answers

<p>To hold data retrieved from a database (B)</p> Signup and view all the answers

<p>close() in a finally block (C)</p> Signup and view all the answers

<p>By sharing access to the same memory space (A)</p> Signup and view all the answers

<p>Initiates the thread's execution (B)</p> Signup and view all the answers

<p>Using a boolean variable in the run method (B)</p> Signup and view all the answers

<p>Running (D)</p> Signup and view all the answers

<p>5 (C)</p> Signup and view all the answers

<p>It can lead to thread starvation. (D)</p> Signup and view all the answers

<p>To release CPU time voluntarily (D)</p> Signup and view all the answers

<p>Runnable (C)</p> Signup and view all the answers

<p>It can lead to deadlocks. (A)</p> Signup and view all the answers

<p>Defines the order in which threads are executed (C)</p> Signup and view all the answers

<p>The thread goes into the wait queue until the lock becomes available (D)</p> Signup and view all the answers

<p>yield() (D)</p> Signup and view all the answers

<p>To stop the thread execution for a specific amount of milliseconds (A)</p> Signup and view all the answers

<p>That only one thread can access critical data at a time (B)</p> Signup and view all the answers

<p>Add the synchronized modifier (C)</p> Signup and view all the answers

<p>Created, Running, Blocked, Dead (B)</p> Signup and view all the answers

<p>A blueprint from which objects are created (D)</p> Signup and view all the answers

<p>extends (A)</p> Signup and view all the answers

<p>Changing the implementation of a method in a subclass with the same name (A)</p> Signup and view all the answers

<p>Classes can implement multiple interfaces (A)</p> Signup and view all the answers

<p>The ability to present the same interface for different underlying forms (A)</p> Signup and view all the answers

<p>One object relies on another object for its functionality (C)</p> Signup and view all the answers

<p>Hiding complex details and showing only essential features (A)</p> Signup and view all the answers

An abstraction of a real-world concept in programming.

A specific realization of an object model.

Characteristics of an object; what it is.

Capabilities of an object; what it can do.

A blueprint for creating objects (a template).

Special method called to create an object instance.

Restricting access to object data (security).

Method for retrieving object data.

A constructor provided by the compiler when no constructors are defined in a class. It initializes object's fields.

A method used to retrieve the value of a field in a class.

Hiding complex details from the user, exposing only essential information.

A relationship between two objects where one object uses another.

A stronger association: one object relies on the existence of another.

A weaker association: objects can exist independently.

A 'is-a' relationship where a class (child) inherits properties and methods from another class (parent).

Treating objects of different classes in a uniform way, via inheritance.

A specification for a class, defining method signatures without implementation.

A way to write reusable code that works with different data types without sacrificing type safety.

Converting an object into a byte stream for storage or transmission.

The interface that must be implemented for an object to be serializable.

A software design pattern that separates an application into Model, View, and Controller components.

The component that holds data and business logic in MVC architecture.

Java class that enables a model to broadcast changes, notifying observers.

MVC component representing data to the user.

MVC component handling user interaction, calls model and view.

Interface in Java for responding to model changes.

A class defined inside another class.

Nameless class, defined and used at once, often in method arguments.

Java Database Connectivity API for database interaction.

Organized collection of structured data.

Database Management System; software to manage databases.

Two-dimensional structure with rows and columns, stores data in a database.

Structured Query Language, standard language for database operations.

Create, Read, Update, Delete - basic database operations.

Data Definition Language, for defining database structure.

SQL command to create a database.

SQL command to define a table in a database.

A special language understood by the Java Virtual Machine (JVM), used to execute Java programs.

The process of automatic memory management in Java, where unused objects are identified and removed from memory.

A component of the JVM that loads all necessary Java classes into memory for execution.

A variable, usually represented by a capital letter (e.g., 'T'), used in generic code to represent a placeholder for any type.

When a subclass provides its own implementation of a method already defined in its parent class.

Executes SELECT statements in SQL, retrieving data as a ResultSet object.

Executes INSERT, UPDATE, or DELETE statements in SQL, returning the number of affected rows.

Holds data retrieved from a database after executing an SQL query.

Use a while loop with the 'rs.next()' method to move through the results one row at a time.

Closes the connection to the database, releasing resources.

Ensures code always executes, even if an exception occurs, often used for closing resources.

Executing multiple threads concurrently within the same memory space of a program.

Executing multiple processes concurrently, each with its own memory space.

An independent unit of execution within a program, sharing memory with other threads.

Represents a Java thread, providing methods to control its state and execution.

States that a thread can be in: Created, Running, Blocked, Dead.

The method inside a Thread object that contains the code to be executed by the thread.

Initiates the execution of a thread, causing the run() method to be called.

Defines a run() method, allowing any class to implement the Runnable interface and be executed as a thread.

A numerical value (1-10) assigned to a thread to indicate its relative importance.

INT for whole numbers, VARCHAR for variable-length strings (with a maximum length), and DOUBLE for numbers with decimals.

A unique identifier for a record/row in a table; prevents duplicate values and ensures every record has a value for that field.

Ensures that a field contains unique values across all rows in the table.

Forces a field to always have a value; prevents empty values.

Automatically assigns unique integer values to a field, typically used for IDs.

Deletes an entire database and all its tables and data.

Deletes a specific table from a database.

Commands used to manipulate existing data within a database.

Used to retrieve data from one or more tables in a database.

Adds new rows of data to a table

Modifies existing data in a table

Removes rows from a table.

A software component that enables a JDBC application to connect to a database server.

A pure Java driver that communicates directly with the database server over a network connection.

A thread continuously checks a flag, consuming CPU cycles without doing useful work.

Where ready-to-run threads are kept, waiting for their turn on the CPU.

Where threads are temporarily paused, waiting for a specific event or condition.

A function that voluntarily releases the CPU, allowing another thread to run.

A function that puts a thread to sleep for a specified duration, preventing it from using the CPU.

A mechanism to control access to shared resources, preventing multiple threads from modifying them simultaneously.

A mechanism in Java that allows only one thread to access an object's methods at a time, preventing conflicts.

A method that acquires an object's lock before executing, ensuring exclusive access.