Java Glossary and Core Concepts Quiz

What is the purpose of the 'abstract' keyword in Java?

• To declare a class or method that must be inherited and cannot be instantiated directly

• To create a new instance of a class

• To declare a final method that cannot be overridden

• To initialize a static method

What does 'API' stand for?

• Application Programming Interface

• Application Protocol Interface

• Automatic Programming Input

• Array Programming Interface

What is an 'array' in Java?

• A resizable collection of objects

• A dynamic collection of different data types

• A method to iterate over collections

• A fixed-size collection of data of the same type

What does the 'boolean' type represent?

• A type of loop

• A true or false value

• A character type

• A numeric value

What is 'bytecode'?

• A tool for Java code optimization

• A high-level object-oriented code

• The instruction set for the Java Virtual Machine

• A type of Java variable

What is 'casting' in Java?

• Removing a value from memory

• Creating an instance of a class

• Changing the value of a variable

• Converting a variable from one type to another

What does 'char' keyword define?

• A type of loop

• A sequence of characters

• A floating point number

• A single character

What is a 'class' in Java?

• A specific type of data structure

• A template defining the properties and behaviors of objects

• A programming method

• A function within a program

What does 'concurrency' refer to?

• The ability of a program to run several tasks in parallel

• Error handling in applications

• Data type conversion

• Sequential data processing

What is a 'constructor' used for in Java?

• To create and initialize objects

• To terminate programs

• To handle exceptions

• To declare variables