This tutorial has been prepared for the beginners to help them understand the basic to advanced concepts related to Java Programming language. Prerequisites. This book is intended for people with at least some basic programming back- ground, which includes people . Java Applet Basics. 9. Graphics, Fonts, and. Sun's JDK. The Java Developers Kit (JDK) (introduced in Lesson 1) includes a standard set of classes that provide the core functions of Java. The language.
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Core Java rieverkoratou.gq - Free download as PDF File .pdf), Text File .txt) or read online for free. Basic concepts of OOPs are: rieverkoratou.gq rieverkoratou.gq rieverkoratou.gqtance 4. The Java language is completely specified; all data-type sizes and formats are . The basic structure of an applet that uses each of these predefined methods is. ▫Fundamental Concepts. ▫Bootstrapping. ▫Basic Language Syntax. ▫Common Caveats. ▫Coding Conventions. Core JAVA. ▫Fundamental Concepts.
It can be physical or logical. An Object can be defined as an instance of a class. An object contains an address and takes up some space in memory. Objects can communicate without knowing the details of each other's data or code. The only necessary thing is the type of message accepted and the type of response returned by the objects.
Example: A dog is an object because it has states like color, name, breed, etc. Class Collection of objects is called class. It is a logical entity. A class can also be defined as a blueprint from which you can create an individual object. Class doesn't consume any space. Inheritance When one object acquires all the properties and behaviors of a parent object, it is known as inheritance. It provides code reusability. It is used to achieve runtime polymorphism.
Polymorphism If one task is performed in different ways, it is known as polymorphism. For example: to convince the customer differently, to draw something, for example, shape, triangle, rectangle, etc. In Java, we use method overloading and method overriding to achieve polymorphism. Another example can be to speak something; for example, a cat speaks meow, dog barks woof, etc.
Abstraction Hiding internal details and showing functionality is known as abstraction. For example phone call, we don't know the internal processing. In Java, we use abstract class and interface to achieve abstraction. Encapsulation Binding or wrapping code and data together into a single unit are known as encapsulation.
For example, a capsule, it is wrapped with different medicines. A java class is the example of encapsulation. Java bean is the fully encapsulated class because all the data members are private here. Coupling Coupling refers to the knowledge or information or dependency of another class. It arises when classes are aware of each other. If a class has the details information of another class, there is strong coupling. In Java, we use private, protected, and public modifiers to display the visibility level of a class, method, and field.
You can use interfaces for the weaker coupling because there is no concrete implementation. Cohesion Cohesion refers to the level of a component which performs a single well-defined task. A single well-defined task is done by a highly cohesive method.
The weakly cohesive method will split the task into separate parts. The java. However, the java. Association Association represents the relationship between the objects. Here, one object can be associated with one object or many objects. There can be four types of association between the objects: One to One Many to One, and Many to Many Let's understand the relationship with real-time examples. For example, One country can have one prime minister one to one , and a prime minister can have many ministers one to many.
Also, many MP's can have one prime minister many to one , and many ministers can have many departments many to many. The great part of this book is a self-test section at the end of each chapter.
Pros: a plain tone of voice, self-testing, full coverage of Java core. Cons: you need at least a small prior understanding of programming. It puts aside the playful tone and focuses on detailed explanations of Java core. Each chapter is devoted to a certain subject, starting from introduction to the language and Java programming environment and moving to data structures, objects and classes and so on.
Unlike many books for beginners, Core Java gives an explicit coverage of collections and generics, which is useful for real programming. All in all, it is a great reference book. Read it once and return to it anytime you need to refresh your knowledge. Pros: a full reference to Java Core and attention to collections and generics, profound explanations.
Cons: some topics, like generics, are covered less diligent than others. Like many others, it starts with an introduction to OOP. It is also a rather good reference book. Each chapter has the vocabulary and exercise sections to consolidate theory and master the skill of programming thinking.
It is more suitable for beginners than readers with even a small experience in coding. For starters, it is simple and kind of fun to read. Pros: a source for adjusting your way of coding, practice, basic concepts explained clearly.
Cons: cannot be considered as the complete reference for core Java; the same level of complexity in all exercises. Cheers to that! Effective Java is written by Joshua Bloch This is not a book for a complete beginner but is must-read research for every Java developer. If you want to understand the inner processes and get a clue of how and why they are arranged this way, this book serves the purposes well. It will teach you how to write the code and how to do it well.
Pros: easy to read, covers best practices in programming, useful advice for improving your coding. Cons: requires an understanding of core concepts and at least a small experience in coding.
It covers the Java 8 APIs, and clearly explains the basic concepts and beyond that. Pros: the real world examples, clear and detailed explanations, a good reference for the latest Java APIs.
Cons: requires a basic knowledge of Java programming. Java 8 in Action If you need a Java 8 book with full coverage of its features, this one is for you.
It will be easier for you to understand the material with some background in Java. Just be sure not to mix them up : All in all, this is a book with an obvious focus on practice, so you can use it as an additional source for the enhanced studying. Pros: focused on practice, shows the difference between the right and the wrong code.
Cons: requires supplementary sources for a deeper understanding of Java basics. Thinking in Java by Bruce Eckel This book offers you a rather refreshing approach to explaining Java fundamentals.
It has a focus on Java language design and behavior, and includes many detailed explanations. You will get the understanding of how each topic fits in with OOP.
The basic subjects are fully covered on the first pages of the book. The larger part can help you to cover the new ground. It is one of those books, which you will return to even after years of studying and coding. Although some of the examples are a bit outdated, this book is still a profound source for learners, because it actually teaches you to think like a Java programmer and encourages you to code.
Pros: a thorough source, plenty of code samples and exercises, excellent explanation of OOP concepts in Java. Cons: might be too complicated for a beginner. Grokking Algorithms: An illustrated guide for programmers and other curious people by Aditya Y. Bhargava If you need the best book about algorithms, this one may be the right choice. It is comprehensible for readers with an entry level of knowledge and presents popular algorithms such as sorting and searching in a graphical manner.
Not many people would say that this specific subject is very exciting. This is why a visual approach to presenting data will help the newcomers to quickly engage themselves in learning. The book is divided into short chapters with a variety of examples, so you perceive the new information in the right proportions.
Pros: visuals, engaging narration, full coverage of fundamentals. Cons: great for beginners, but cannot be considered as a full reference.
Introduction to Algorithms by Thomas H. Cormen, Charles E. Leiserson, Ronald L. It is written in plain English and covers everything you need to know. Still, it is a good reference book. If you feel you need to learn more about algorithms, then keep this book in mind. Pros: a detailed catalogue of algorithms to which for a variety of situations. Cons: a lack of practice, requires a background reading. Downey This is a helpful guide for utilizing data structures in Java programming.