InfoWorld

Comparing Java objects with equals() and hashcode()

Java’s equals() and hashcode() are two methods that work together to verify if two objects have the same value. You can use them to make object comparisons easy and efficient in your Java programs. In ...
note

伝授！Javaの奥儀 その16 ～switch 文に String 型が渡されたときは ...

拙者、Javaの奥儀百箇条をここに伝授仕る所存！この書、プログラムを極めんとする者、またSilver資格を目指す者にこそ読むべき巻物なり。是非とも手に取られよ！ Java 7 以降、switch 文は String を受け付けるようになった。 この際、内部では hashCode() を用いて ...
GitHub

kushsharma1001/Contract-of-Equals-and-Hashcode-in-Java

Your codespace will open once ready. There was a problem preparing your codespace, please try again. This explains you what happens if we add unique custom objects as keys to a HashMap and we wish to ...
InfoWorld

Guava’s Objects Class: Equals, HashCode, and ToString

If you are fortunate enough to be using JDK 7, the newly available Objects class is the obvious (at least to me) choice for implementing the “common” Java object ...
GitHub

neyugnluan/Hashcode-in-Java

###The hashCode Contract Quoting the source: The general contract of hashCode is: Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode ...
Ars Technica

Java help needed: clone(), equals(), and hashcode() and cycles

I'm currently beating my head against the following problem, and I could use a point in the right direction.<BR><BR>For my current task, I'm required to generate an implementation for clone(), equals( ...