Chapter 3. Fundamental Programming Structures in Java

In this chapter

• A Simple Java Program

• Comments

• Data Types

• Variables

• Operators

• Strings

• Input and Output

• Control Flow

• Big Numbers

• Arrays

At this point, we are assuming that you successfully installed the JDK and were able to run the sample programs that we showed you in Chapter 2. It’s time to start programming. This chapter shows you how the basic programming concepts such as data types, branches, and loops are implemented in Java.

Unfortunately, in Java you can’t easily write a program that uses a GUI—you need to learn a fair amount of machinery to put up windows, add text boxes and buttons that respond to them, and so on. Introducing the techniques needed to write GUI-based ...

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