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subject > component > module > Java module > Java method > Java constructor |
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Java constructor | ||||
subject | fact |
Java constructor | has the same name as its class | ![]() |
has example public Account(String accountHolder, float initialBalance) | ![]() | |
is a subtopic of The Basics of Java | ![]() | |
is a kind of constructor | ![]() | |
is a kind of Java method | ![]() | |
constructor | has purpose to initialize the instance variables of a newly created object and perform any other needed initialization | ![]() |
is part of a class | ![]() | |
Java method | can be accessed by other methods and variables in any class in the same package by default | ![]() |
overrides a method in a superclass with the same name | ![]() | |
should be as private as possible | ![]() | |
should not be public except for those that will definitely need to be called from outside the package | ![]() | |
should return to its caller from only one place which should be the last statement | ![]() | |
procedure | provides procedural abstraction | ![]() |
module | has high cohesion if related aspects of a system are kept together in this module, and unrelated aspects are kept out | ![]() |
is implemented | ![]() | |
lacks side effects if it does not modify any data, and does not leave behind any information, other than its result, that would have an effect on other computations | ![]() | |
procedural abstraction | has advantage when using a certain procedure, a programmer does not need to worry about all the details of how it performs its computations; he or she only needs to know how to call it and what it computes | ![]() |
hides the details of procedures | ![]() | |
component | may perform a special-purpose function such as the user interface for a particular system | ![]() |
Up: constructor, Java method