This book is designed for the students. It teaches the fundamentals of Java and Object-Oriented Programming. Designed to be an affordable book to students, the number of pages is kept to its minimum. Topics covered include: the Java programming environment; the Java basic building blocks that include variables; data structures; data types and their declaration; expressions, statements, and operators; program flow control mechanisms; arrays; methods; inputs and outputs; class and objects; file handling; inheritance; encapsulation; polymorphism; and interface.