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日期:2024-04-12
2014年4月19日 - Java 是一個物件導向程式語言。物件導向的基本觀念是讓程式可以描述、建構及處理真實世界中所看到的物件並設計它們之間的層次關係。...
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日期:2024-04-19
Java 中的變數(variable) 有兩種,一種是基本資料型態(primitive data type) ,另一種則 ... 《程式語言教學誌》的範例程式http://pydoing.blogspot.com/ 檔名:Demo.java ......
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日期:2024-04-17
Example.java裡面也可以定義其他的類別,但是只有class Example能夠宣告為public,其他Example.java裡 ......
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日期:2024-04-15
Collection of 10 OOPS and SOLID design principles which are essential for Java programmer to write flexible, maintainable and quality code. ... Our first object oriented design principle is DRY, as name suggest DRY (don't repeat yourself) means don't writ...
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日期:2024-04-16
Object-Oriented Nomenclature • “Class” means a category of things – A class name can be used in Java as the type of a field or local variable or as the return type of a function (method) • There are also fancy uses with generic types such as List. This is...
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日期:2024-04-16
Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by HashMap. The general contract of hashCode is: Whenever it is invoked on the same object more than once during an execution of a Jav...
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日期:2024-04-12
Returns an integer hash code for this object. By contract, any two objects for which equals(Object) returns true must return the same hash code value. This means that subclasses of Object usually override both methods or neither method. Note that hash val...
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日期:2024-04-17
In software engineering, POJO is an acronym for Plain Old Java Object. The name is used to emphasize that a given object is an ordinary Java Object, not a special object. The term was coined by Martin Fowler, Rebecca Parsons and Josh MacKenzie in Septembe...