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Preview: About.com Java: Most Popular Articles

About.com Java: Most Popular Articles



These articles are the most popular over the last month.



Published: Thu, 23 Feb 2017 12:32:58 +0000

 



How to Declare Variables in Java

2017-02-23T12:32:58Z

The use of variables is key to any program and normally one of the first things to happen in any program. Learn about declaring variables in Java.



A Quick Guide to Using Constants Syntax in Java

2017-02-23T12:32:58Z

Throughout the lifetime of a variable its value might change many times. But what if you know the value will never change? Or more importantly you want to make sure it can't change? This is when you need to use a constant.



How to Write Java Source Code

2017-02-23T12:32:58Z

Are you ready to start programming in Java? Follow this step-by-step tutorial to learn how to write, compile and run Java programs.



A Quick Guide to Using Accessors and Mutators...

2017-02-23T12:32:58Z

In object-oriented programming sometimes it's necessary to provide access to the private fields of an object. The use of accessors and mutators are a way to enable that access.



How to Tell If Your Computer is 32- or 64-Bit

2017-02-23T12:32:58Z

How many bits is my computer? Follow these steps if you want to find out if your computer is 32-bit or 64-bit on a Windows operating system.



Wondering What Java Is? Here's the Answer

2017-02-23T12:32:58Z

What is Java computer programming language? Find out what Java is, who created it, and why people choose to program with it since the early 90s.



Java Platforms

2017-02-23T12:32:58Z

Java technology recognizes that developers build different applications based on the differing needs of their users. Discover the different editions of the Java platform available to developers.



Sample Java Code to Generate Random Numbers

2017-02-23T12:32:58Z

Learn how to generate random numbers using the java.util.Random class. Generating a series of random numbers is a common task that crops up.



Sharing is Caring: How Static Fields in Java Work

2017-02-23T12:32:58Z

In Java, fields can be shared across all objects of the same type through the use of the static modifier.



Data Encapsulation

2017-02-23T12:32:58Z

Find out about data encapsulation, the most important concept of object-oriented programming.



Sample Java Code for Building a Simple GUI App

2017-02-23T12:32:58Z

An example Java class for building a simple GUI application. This program corresponds to the Coding a Simple Graphical User Interface - Part I



Understanding Java's 'Cannot Find Symbol' Error...

2017-02-23T12:32:58Z

class="no-js" itemscope itemtype="http://schema.org/Article" > itemprop="description" >When a Java program



The Structure of Java Program - Hello NetBeans...

2017-02-23T12:32:58Z

A basic look at the structure of a very simple Java program. This article gives a beginner a starting place for understanding the way the Java syntax builds to make a Java program.



Reached End of File While Parsing

2017-02-23T12:32:58Z

Reached end of file while parsing is a compile time error.



How to Convert Strings to Numbers and Vice...

2017-02-23T12:32:58Z

How to convert Strings to numbers and back again.



Java Code Listing for a Simple Calculator

2017-02-23T12:32:58Z

This program creates a simple calculator that performs addition and subtraction. It highlights how to implement the ActionListener interface in three different ways.



Using the Arrays Class

2017-02-23T12:32:58Z

How to use the Arrays class to manipulate Arrays



Introduction to Object-Oriented Programming

2017-02-23T12:32:58Z

Understanding object-oriented programming is fundamental to becoming a truly great Java programmer. The key concepts of objects are discussed in this article.



A Quick Guide to Using Naming Conventions in Java

2017-02-23T12:32:58Z

Using standard Java naming conventions will increase the readability of your code and make it easier to maintain and use for other programmers.



Variable

2017-02-23T12:32:58Z

A variable is a container that holds values that are used in a Java program.



Wondering What "Inheritance" Is in Programming?...

2017-02-23T12:32:58Z

Learn about object inheritance and how it can be used to create a relationship between objects that share common characteristics.



Association

2017-02-23T12:32:58Z

The association relationship is a way of describing the fact that a class knows about, and holds a reference to another class.



Understanding 'Primitive Data Types' in Java

2017-02-23T12:32:58Z

The Java language provides eight primitive data types that define simple values a program can use.



What is Aggregation?

2017-02-23T12:32:58Z

Aggregation is a relationship between two objects that is best described as a



Method Signature

2017-02-23T12:32:58Z

A method signature is part of the method declaration. It is the combination of the method name and the parameter list.



What Is Unicode?

2017-02-23T12:32:58Z

Learn about the Unicode standard, a global way to encode the characters that computers use.



Working with Arrays

2017-02-23T12:32:58Z

How to make use of arrays. Java.



Compound Assignment Operator

2017-02-23T12:32:58Z

Compound assignment operators provide a shorter syntax to assign the results of the arithmetic and bitwise operators.



Using the Switch Statement for Multiple Choices

2017-02-23T12:32:58Z

Use the switch statement when you want your program to chose between a number of alternative options.



A Simple Guide to Creating Basic JFrame Windows

2017-02-23T12:32:58Z

How to use JFrame to create a simple window for a Java application.



Types of Exceptions

2017-02-23T12:32:58Z

There are three different types of exceptions a Java application might encounter.



Understanding Reserved Object Variable Words in...

2017-02-23T12:32:58Z

Here you will find a list of words that you cannot use as identifiers in a Java program.



Beginner's Guide to Using an IDE Versus a Text...

2017-02-23T12:32:58Z

Before you start to learn Java, you need somewhere to write your programs. Here's a guide to using an IDE versus a text editor.



Learn the Definition and Syntax Rules For Java...

2017-02-23T12:32:58Z

A Java identifier is simply a name given to a package, class, interface, method, or variable. Keep reading for more information and examples of identifiers.



Statement

2017-02-23T12:32:58Z

If expressions are akin to clauses in the English language, then statements are like sentences.



Declaration Statement

2017-02-23T12:32:58Z

Declaration statements are used to declare variables.



Parameter

2017-02-23T12:32:58Z

Parameters are the variables that are listed as part of a method declaration.



Constant

2017-02-23T12:32:58Z

A constant is a variable whose value cannot change once it has been assigned.



How to Implement Java Comments

2017-02-23T12:32:58Z

Enhance the readability of your programs by using Java comments.



How to Use "IF-THEN" and "IF-THEN-ELSE"...

2017-02-23T12:32:58Z

Use the if-then and if-then-else statements when your program needs to make a simple decision about what to do next.



The String Literal

2017-02-23T12:32:58Z

String Literals are used for representing string values in Java code.



Use Java to Generate Unique Random Numbers

2017-02-23T12:32:58Z

Sometimes the random numbers to be picked need to be unique.



Static Method

2017-02-23T12:32:58Z

Static methods are created using the static keyword.



Main Class

2017-02-23T12:32:58Z

A main class is a class that contains a main method



Java 7 (and beyond) and the Mac OS X

2017-02-23T12:32:58Z

Since Java 7 the version of Java for the Mac OS X now comes from Oracle.



Expression

2017-02-23T12:32:58Z

Expressions are essential building blocks of any Java program. They are built using values, variables, operators and method calls.



How to Create a Simple Table

2017-02-23T12:32:58Z

A look at the JTable class and how it can be used to make simple tables for GUIs



Using Multiple Main Classes

2017-02-23T12:32:58Z

Whilst learning Java the best way is to compile and run example code. Using multiple classes within a NetBeans project means you can keep all your code examples in one place and try them out independently of each other.



How to Use an 'ArrayList' in Java

2017-02-23T12:32:58Z

How to use the ArrayList class. Java.



The try-catch-finally blocks

2017-02-23T12:32:58Z

Java handles exception through the use of the try-catch-finally blocks



How to Build a Simple GUI in JavaFX Code

2017-02-23T12:32:58Z

An example JavaFX application to show how to build a simple graphical user interface. The interface is the same as those built using Swing in part 1 and NetBeans GuiBuilder in part two.



Check out this Easy Tutorial on Creating a Java...

2017-02-23T12:32:58Z

When a new instance of an object is created, the constructor method is called. Examples of how to create constructor methods in Java are discussed here.



Scope

2017-02-23T12:32:58Z

Scope refers to the lifetime and accessibility of a variable. How large the scope is depends on where a variable is declared.



How to Code a Simple Graphical Interface in...

2017-02-23T12:32:58Z

A step-by-step guide to manually coding a simple graphical user interface. Part two of this step-by-step shows how to code the same graphical user interface using NetBeans Gui Builder.



What Is JavaFX and Its History?

2017-02-23T12:32:58Z

Find out what JavaFX is and what it can be used to create.



Manipulating Strings

2017-02-23T12:32:58Z

The string class provides a few methods for manipulating Strings.



Java Is Case Sensitive

2017-02-23T12:32:58Z

When coding in Java it's important to remember that Java is case sensitive. Here are some tips to avoid common case sensitivity pitfalls.



A Simple Table Example Java Code Program

2017-02-23T12:32:58Z

An example program showing how to use the JTable class



How to Code a Password Dialog Program in Java

2017-02-23T12:32:58Z

Example Java program code for creating a simple password dialog box.



Common Runtime Error

2017-02-23T12:32:58Z

See if you can debug a piece of code that produces one of the most fundamental Java runtime errors.



Implicit Parameter

2017-02-23T12:32:58Z

In a method call the implicit parameter is the object the method belongs to.



Everything You Need to Know to Build Your First...

2017-02-23T12:32:58Z

Follow this step-by-step tutorial to learn how to write, compile and run Java applets.



What 'Concatenation' Is in Java Terms

2017-02-23T12:32:58Z

Concatenation describes the operation of joining two strings together.



Superclass

2017-02-23T12:32:58Z

A superclass is a class that has been extended by another class.



GUI

2017-02-23T12:32:58Z

A GUI is the graphical interface presented to the user of an application.



Strongly Typed

2017-02-23T12:32:58Z

Java is a strongly typed programming language because every variable must be declared with a data type.



Object

2017-02-23T12:32:58Z

An object is an instance of a class.



DefaultTableModel Example Program

2017-02-23T12:32:58Z

An example program to show the DefaultTableModel in action.



Ternary Operator

2017-02-23T12:32:58Z

The ternary operator ?: earns its name because it's the only operator to take three operands.



How to Generate Random Numbers (Part II)

2017-02-23T12:32:58Z

Following on from the first article on generating random numbers in Java, find out how to generate random fractional numbers and boolean values.



What Java 'PACKAGES' Are and How to Use Them

2017-02-23T12:32:58Z

Bring a sense of order to your classes through the use of packages.



Source Code

2017-02-23T12:32:58Z

Source code refers to the programming instructions used to create an application.



What Is Netbeans?

2017-02-23T12:32:58Z

NetBeans is a sophisticated IDE that aims to help developers build any type of application.



GUI Builder Code For Building a Simple GUI...

2017-02-23T12:32:58Z

This Java code listing shows what is created by the NetBeans GUI Builder for the simple GUI application built in the Coding a Simple GUI Application - Part II.



How Composition is Used in Java

2017-02-23T12:32:58Z

The term composition takes on different meanings depending on the subject, and in Java it has its own meaning as well.



How to Create an Input Dialog Box Using Java...

2017-02-23T12:32:58Z

Find out how to use the showInputDialog method of the JOptionPane class to make different kinds of input dialog boxes.



ChoiceBox Overview

2017-02-23T12:32:58Z

A look at the JavaFX ChoiceBox class



The Path Interface

2017-02-23T12:32:58Z

A look at the Path interface and how it can be used for handling file paths.



Event

2017-02-23T12:32:58Z

An event typically occurs when a user interacts with a user interface.



Using Command-line Arguments

2017-02-23T12:32:58Z

How to make use of command-line arguments in your Java applications.



ActionListener

2017-02-23T12:32:58Z

The ActionListener interface is an event listener for actions performed by some graphical components.



Disabling (or Enabling) the Java Plugin in a...

2017-02-23T12:32:58Z

Here are the steps to disable (or enable) the Java plugin in a browser.



Void Keyword Definition in Java

2017-02-23T12:32:58Z

The void keyword denotes that a method does not have a return type.



Find Out What a Conditional Operator Is Used...

2017-02-23T12:32:58Z

Conditional operators are used to evaluate a condition that's applied to one or two boolean expressions. Keep reading to see an example.



Conditional Statements

2017-02-23T12:32:58Z

Conditional statements enable a program to make a decision and preform an action based on that decision.



A KeyListener Example Program

2017-02-23T12:32:58Z

An example program showing how to implement the KeyListener interface.



ComboBox Overview

2017-02-23T12:32:58Z

A look at the JavaFX ComboBox class.



Simple Message Dialog Boxes Program

2017-02-23T12:32:58Z

Example Java program code for how to make simple message dialog boxes using the JOptionPane class.



Creating a Message Dialog Box - Part I

2017-02-23T12:32:58Z

Learn how to use the JOptionPane class to make a simple message dialog box



What Is an Exception?

2017-02-23T12:32:58Z

Find out what an exception is and how Java handles them.



Hexadecimal Defined for Java

2017-02-23T12:32:58Z

Java Hexadecimal is a numbering system with a base of 16. It uses all the numerals 0,1,2,3,4,5,6,7,8,9 as well as the letters A,B,C,D,E,F for each digit of a number.



Understanding DefaultTableModel in Java

2017-02-23T12:32:58Z

The DefaultTableModel class in Java is a subclass of the AbstractTableModel that stores data for the JTable when no table model is specifically defined by the programmer.



Reading and Writing Character Streams

2017-02-23T12:32:58Z

How to read and write to a text file one character at a time.



ColorPicker Overview

2017-02-23T12:32:58Z

A look at the JavaFX ColorPicker class



An Easy Guide to Using 'CARDLAYOUT' Elements in...

2017-02-23T12:32:58Z

A simple application showing how the CardLayout can be used to switch JPanels.



Arithmetic Operator

2017-02-23T12:32:58Z

Arithmetic operators perform the same basic operations you would expect if you used them in mathematics (with the exception of the percentage sign).



Use the Keyword Final to Disallow Inheritance...

2017-02-23T12:32:58Z

class="no-js" itemscope itemtype="http://schema.org/Article" > itemprop="description" >While one of Java's



Understanding 'Overloading' In Java

2017-02-23T12:32:58Z

Overloading is the ability to define more than one method with the same name in a class.



How to Read and Write Byte Streams

2017-02-23T12:32:58Z

Learn how to read bytes from a binary file one byte at a time.



GridPane Overview

2017-02-23T12:32:58Z

How to use the GridPane layout to place child nodes in a grid format.