AP Computer Science A Flashcard

Front

What are the primitive data types in Java?

Back

boolean, byte, short, int, long, float, double, char

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VAR.1.C.1

Front

What is the difference between int and double data types in Java?

Back

The main difference between int and double data types in Java is their precision.

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VAR.1.C.1

Front

How do you declare a variable of type boolean in Java?

Back

boolean variableName

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VAR.1.C

Front

What are the three control structures in Java?

Back

Sequential, Selection, Iteration

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CON.2.C.1

CON.2.A.2

IOC.1

Front

What is the purpose of the if statement in Java?

Back

The purpose of the if statement in Java is to perform a conditional execution of a block of code.

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CON.2.A.2

CON.2.A.3

Front

What is an array in Java?

Back

An array in Java is a data structure that allows you to store multiple values of the same type in a single variable.

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VAR.2.A

VAR.2.A.1

VAR.2.A.3

VAR.2.A.2

VAR.2.A.4

Front

How do you declare and initialize an array in Java? Options: int numbers = new int[5];, int[] numbers = {1, 2, 3, 4, 5};, int[] numbers = new int[] {1, 2, 3, 4, 5};, int[] numbers = new int[5];

Back

int[] numbers = new int[5];

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VAR.2.A

Front

What is the difference between an array and an ArrayList in Java?

Back

An array is a fixed-size data structure that stores elements of the same type, while an ArrayList is a dynamic-size data structure that can store elements of different types.

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VAR.2.A

Front

What is object-oriented programming?

Back

Object-oriented programming is a programming paradigm that organizes data and behavior into reusable structures called objects.

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VAR.2.A

Front

What are the four pillars of object-oriented programming?

Back

encapsulation, inheritance, polymorphism, and abstraction

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VAR.2.A