javaequalsoverride

2018年6月23日—這篇是EffectiveJava-Alwaysoverridehashcodewhenyouoverrideequals章節的讀書筆記本篇的程式碼來自於原書內容 ...,WhenclassCoverridestheequalsmethoditmustcheckthattheobjectreferencepassesinisnotnull,thatitisthesameclass(notarequirement,but ...,2011年11月18日—AccordingtoEffectiveJava,Overridingtheequalsmethodseemssimple,buttherearemanywaystogetitwrong,andconsequencescanbedire.,2024年1月...

參考資訊如下
Effective Java Item11

2018年6月23日 — 這篇是Effective Java - Always override hashcode when you override equals章節的讀書筆記本篇的程式碼來自於原書內容 ...

How and Why to Override the equals Method in Java

When class C overrides the equals method it must check that the object reference passes in is not null, that it is the same class (not a requirement, but ...

How to override equals method in Java

2011年11月18日 — According to Effective Java, Overriding the equals method seems simple, but there are many ways to get it wrong, and consequences can be dire.

Java equals() and hashCode() Contracts

2024年1月8日 — Overriding equals(). Let's override the .equals() method so that it doesn't consider only object identity but also the value of the two relevant ...

MET08

Unfortunately, in this case it is impossible to extend the Card class by adding a value or field in the subclass while preserving the Java equals() contract.

Override equals method in Java

The object class's equals() method, which accepts an object as well as compares it with the current object, is used to compare two objects.

Overriding equals method in Java

2021年7月29日 — The reason for printing “Not Equal” is simple: when we compare c1 and c2, it is checked whether both c1 and c2 refer to same object or not ( ...

Overriding hashCode() And equals() For Records

2024年1月16日 — A record, being a restricted form of a Class in Java, comes with its default implementation of equals(), hashCode(), and toString(). We can ...

Overriding the equals() Method in Java

2024年3月6日 — What to remember · The equals() method can be overridden to compare field values by matching the states of the instances. · If comparing two ...

[從Effective Java 了解Kotlin] 覆寫equals 以及hashCode 方法

2022年2月14日 — 由於覆寫equals() 以及hashCode() 所要注意的事項有很多，所以推薦使用IDE 的自動產生器，這樣可以減少出錯的機會。如果是在Kotlin 上，更是可以直接使用 ...