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26 Cards in this Set
- Front
- Back
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Testing |
Attempting to show that a program or method is defective |
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Debugging |
To assume a defect in the program exists, and to find it and fix it |
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Clears Mode |
Sets a parameter to the initial value of that type |
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Restores mode |
Ensures each parameter ends a method with the same value it started with |
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Replaces mode |
A parameter's value could be changed, but the method's behavior does not depend on the original value |
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Updates mode |
The parameter's value might be changed, but the original value affects the method |
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Parameter modes |
Indicate how a method could change the parameter |
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Parameter names in contracts stand for |
Object values, not reference |
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Object type |
The class from which the object comes |
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Interfaces can't have |
Constructors or static methods |
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Constructors in classes |
Not inherited, special notation super (...) needed |
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I2 extends I1. I2 is the... |
Sub/child/derived interface |
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Declared type should be an... |
Interface type |
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Polymorphism |
Java decides which method to use for any instance method based on the object type of the receiver |
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@Override |
Annotation that must be used to override a class being extended or whose contract is from an interface being implemented |
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Rss |
Rss --> channel --> title, link, description, 0+ item... item --> link or description |
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Invariants |
Properties of every xml node - has a label (tag or text), and if tag, has 0+ attributes |
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Height of an xml tree |
Length of longest path |
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Size of an xml tree |
Total number of nodes |
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Primitive type |
Type built into java |
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Reference type |
User-defined type, references an object, also called class type |
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Reference value |
Memory address where an object is stored |
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Object value |
Actual mathematical value of an object |
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Assignment operator |
=, copies reference value |
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Immutable type |
No method can change the value of the receiver |
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Mutable type |
The value of the receiver (or some other argument of that type) may be changed by at least one method |
