Java HashMap - Understanding equals() and hashCode() methods
Chapter 13 - Inheritance and Polymorphism - ppt download
How to compare two ArrayList for equality in Java 8? ArrayList equals() or containsAll() methods works? | JavaProgramTo.com
軟帝學院:java常用API:object下equals,string方法屬性詳解- 每日頭條
Java equals() and hashCode() - JournalDev
Java中如何正確重寫equals方法- IT145.com
1 CSE 331 The Object class; Object equality and the equals method slides created by Marty Stepp based on materials by M. Ernst, S. Reges, D. Notkin, R. - ppt download