This book consists of Program theory and programs developed on java. This book helps beginners. Each and every tested program was discussed.Chapter 13 discusses the collection framework in java. This chapter gives a brief overview and many examples on collections framework. Chapter 14 discusses the generics in java.This book is a Java reference book (Best book for Java) that offers a detailed explanation of various features of Core Java, ncluding exception handling, interfaces, and lambda expressions.Significant highlights of the book include simple language, conciseness, and detailed examples. The latest edition of the Core Java 14 programming comprehensively updated for covering Java SE 9, 10 & 11.