Articles & Books From Java

Java Essentials For Dummies
Swiftly brush up on the foundations of Java programming Java Essentials For Dummies is a reliable and succinct reference on the core components of Java—the multifaceted general-purpose language used for desktop, mobile, and web applications. This straightforward book gets right to the point—eliminating review material and wordy explanations—so you get what you need, fast.
Cheat Sheet / Updated 01-11-2023
Writing Java statements (like for and if) and classes (like Math and NumberFormat) help you start and build strong programs. Variables hold different kinds of Java data types: numbers, characters, and true/false numbers. You designate Java operations that can be performed on operands, including arithmetic operators, relational operators (or binary) and logical operators (or Boolean).
Java For Dummies
Learn to code with Java and open the gate to a rewarding career Now in its 9th edition, Java For Dummies gives you the essential tools you need to understand the programming language that 17 million software developers rely on. This beginner-friendly guide simplifies every step of the learning process. You'll learn the basics of Java and jump into writing your own programs.
Cheat Sheet / Updated 02-25-2022
When doing anything with Java, you need to know your Java words — those programming words, phrases, and nonsense terms that have specific meaning in the Java language, and get it to do its thing.This Cheat Sheet tells you all about Java's categories of words.Java's 51 keywordsThe Java programming language has 50 keywords.
Article / Updated 01-13-2022
The late 1980s saw several advances in software development, and by the early 1990s, many large programming projects were being written from prefab components. Java came along in 1995, so it was natural for the language's founders to create a library of reusable code. The library included about 250 programs, including code for dealing with disk files, code for creating windows, and code for passing information over the Internet.
Article / Updated 01-13-2022
In Listing 1, below, you get a blast of Java code. Like all novice programmers, you're expected to gawk humbly at the code. But don't be intimidated. When you get the hang of it, programming is pretty easy. Yes, it's fun, too.Listing 1: A Simple Java Program /* * A program to list the good things in life * Author: Barry Burd, BeginPro@allmycode.
Article / Updated 01-13-2022
Sometimes, error messages can strike fear into the heart of even the bravest programmer. Fortunately some helpful, calming advice is here — advice to help you solve the problem when you see one of these messages. NoClassDefFoundError You get this error when you're trying to run your code. So first ask yourself, did you attempt to compile the code?
Article / Updated 01-13-2022
Most Java programs don’t work correctly the first time you run them, and some programs don’t work without extensive trial and error on your part. This code is a case in point.To write this code, you need a way to generate three-letter words randomly. This code would give you the desired result: anAccount.lastName = " + (char) (myRandom.
Article / Updated 01-13-2022
You will probably find times when programming with Java that you need to display a window on your computer screen. This code has very little logic of its own. Instead, this code pulls together a bunch of classes from the Java API. import javax.swing.JFrame; import javax.swing.ImageIcon; import javax.swing.JLabel; class ShowPicture { public static void main(String args[]) { var frame = new JFrame(); var icon = new ImageIcon("androidBook.
Article / Updated 01-05-2022
After you’ve created an array in Java, you can put values into the array’s components. For example, imagine you are the owner of a motel. The guests in Room 6 are fed up with all those mint candies that you put on peoples’ beds. They check out, and Room 6 becomes vacant. You should put the value 0 into the 6 component.