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24 Cards in this Set
- Front
- Back
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The term "instance variable" is another name for
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non-static field.
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Real-world objects contain
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state and behavior
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software object's state is stored in
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fields
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A software object's behavior is exposed through
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methods
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Hiding internal data from the outside world, and accessing it only through publicly exposed methods is known as
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data encapsulation
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A blueprint for a software object is called a
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Class
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ommon behavior can be defined in a ____ and inherited into a ____ using the _____ keyword.
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Superclass, subclass, extends
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A collection of methods with no implementation is called an
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interface
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A namespace that organizes classes and interfaces by functionality is called a
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package
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The term API stands for
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Application Programming Interface.
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The term "instance variable" is another name for
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non-static field.
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The term "class variable" is another name for
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static field
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A local variable sores temporary state; it is declared inside a
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method.
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A variable declared within the opening and closing parenthesis of a method is called a
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parameter.
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What are the eight primitive data types supported by the Java programming language?
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byte, short, int, long, float, double, boolean, char
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haracter strings are represented by the class
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java.lang.String
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An _____ is a container object that holds a fixed number of values of a single type.
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array
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Consider the following code snippet:
arrayOfInts[j] > arrayOfInts[j+1] Question: What operators does the code contain? |
Answer: >, +
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Consider the following code snippet:
int i = 10; int n = i++%5; 1. Question: What are the values of i and n after the code is executed? |
Answer: i is 11, and n is 0.
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Consider the following code snippet:
int i = 10; int n = i++%5; 2. Question: What are the final values of i and n if instead of using the postfix increment operator (i++), you use the prefix version (++i))? |
Answer: i is 11, and n is 1.
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Question: To invert the value of a boolean, which operator would you use?
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Answer: The logical complement operator "!".
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Question: Which operator is used to compare two values, = or == ?
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Answer: The == operator is used for comparison, and = is used for assignment.
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Question: Explain the following code sample: result = someCondition ? value1 : value2;
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Answer: This code should be read as: "If someCondition is true, assign the value of value1 to result. Otherwise, assign the value of value2 to result."
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Operators may be used in building _______, which compute values.
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expressions
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