ニュース

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 methods such as equals (Object ...
What is the contract between equals() and hashcode()? Learn how these methods work together when comparing objects in Java.
While languages like Ruby provide the pertinent information you need, why can't Java provide a decent, useable, toString() method right out of the box?
Java 11 is getting long in the tooth, so many developers are moving to the next oldest version that's still supported, Java 17. Here's what's different.