Ground-Up Java

Chapter 1: An Introduction to Computers That Will Actually Help You in Life

Figure 1.1: A bit

Figure 1.2: A byte

Figure 1.3: Several bytes

Figure 1.4: SimCom architecture

Figure 1.5: Opcode and argument bits

Figure 1.6: SimCom in action

Chapter 2: Data

Figure 2.1: Assembly language

Figure 2.2: Compiled language

Figure 2.3: Evolution of a Java application

Figure 2.4: SimpleBase2Lab

Figure 2.5: A base-2 odometer

Figure 2.6: An example of two's complement

Figure 2.7: Two's complement lab

Chapter 3: Operations

Figure 3.1: EvaluatorLab

Figure 3.2: EvaluatorLab after evaluation

Figure 3.3: The unary bitwise operator ~

Figure 3.4: Bitwise "and"

Figure 3.5: Left-shift: <<

Figure 3.6: Bitwise right-shift: >>>

Figure 3.7: Numeric right-shift: >>

Figure 3.8: ShiftLab

Figure 3.9: ShiftLab after shifting

Figure 3.10: BoolLab: initial screen

Figure 3.11: BoolLab after execution

Figure 3.12: Data type width, not to scale

Figure 3.13: Data type width relationships

Chapter 4: Methods

Figure 4.1: MethodLab

Figure 4.2: MethodLab after animating

Figure 4.3: Numeric type widths

Chapter 5: Conditionals and Loops

Figure 5.1: While Lab: initial display

Figure 5.2: While Lab with modified test expression

Figure 5.3: While Lab after execution

Figure 5.4: A common loop usage

Figure 5.5: A cycloid

Figure 5.6: NestedLoopLab: initial display

Figure 5.7: NestedLoopLab: 8:15

Figure 5.8: NestedLoopLab with a loop

Figure 5.9: NestedLoopLab with nested loops

Chapter 6: Arrays

Figure 6.1: A new array

Figure 6.2: A used array

Figure 6.3: A two-dimensional array

Figure 6.4: BoolArrayLab

Figure 6.5: BoolArrayLab drawing a parabola

Figure 6.6: Accessible and inaccessible memory

Figure 6.7: An array of bytes in inaccessible memory

Figure 6.8: Reference and array

Figure 6.9: Two references, one array

Figure 6.10: CreateArrayLab

Chapter 7: Introduction to Objects

Figure 7.1: Class as mental category

Figure 7.2: Reference and object

Figure 7.3: DataLab

Figure 7.4: Multiple objects

Figure 7.5: SeveralObjectsLab

Figure 7.6: SeveralObjectsLab reconfigured

Figure 7.7: SeveralObjectsLab reconfigured and executed

Figure 7.8: ObjectMethodLab

Figure 7.9: ObjectLifeCycleLab

Figure 7.10: ObjectLifeCycleLab after running a while

Chapter 8: Inheritance

Figure 8.1: A Simple inheritance hierarchy

Figure 8.2: Inherit Lab

Figure 8.3: Inherit Lab's class-editing dialog box

Figure 8.4: Object layers

Figure 8.5: Inheritance of Officer

Chapter 9: Packages and Access

Figure 9.1: Example package/ directory structure

Figure 9.2: Package as namespace

Figure 9.3: Initial directory structure

Figure 9.4: After compilation

Figure 9.5: After more compilation

Figure 9.6: Polymorphism revisited

Figure 9.7: Chart class and subclasses

Chapter 10: Interfaces

Figure 10.1: Animal kingdom class inheritance

Chapter 11: Exceptions

Figure 11.1: Simple Exception Lab

Figure 11.2: Simple Exception Lab: final state with normal execution

Figure 11.3: Advanced Exception Lab

Figure 11.4: Choosing an exception type in Advanced Exception Lab

Figure 11.5: Advanced Exception Lab reconfigured

Chapter 12: The Core Java Packages and Classes

Figure 12.1: Structure of the API index

Figure 12.2: Structure of the classes frame

Figure 12.3: Class description

Figure 12.4: Field/constructor/ method summaries

Figure 12.5: StringLab

Figure 12.6: StringLab: uppercase, 2 references

Figure 12.7: StringLab: lowercase, 1 reference

Figure 12.8: String references and objects

Figure 12.9: Command-line arguments

Figure 12.10: ConcatLab

Figure 12.11: ConcatLab's Point3D class

Figure 12.12: ConcatLab's Point3D class

Chapter 13: File Input and Output

Figure 13.1: Simple Output Lab

Figure 13.2: Simple Output Lab in progress

Figure 13.3: Simple Input Lab in progress

Figure 13.4: Output chaining

Figure 13.5: Input chaining

Figure 13.6: Data Chain Lab

Figure 13.7: Data Chain Lab in progress: Text, writers, and readers

Figure 13.8: Readers and writers

Figure 13.9: Line number reader and file reader

Chapter 14: Painting

Figure 14.1: A frame with boring contents

Figure 14.2: Color Lab

Figure 14.3: Color Lab with a predefined color

Figure 14.4: Pixel coordinates

Figure 14.5: A black line on a white background

Figure 14.6: A rectangle

Figure 14.7: Ovals and bounding boxes

Figure 14.8: Three ovals

Figure 14.9: Filled rectangle and ovals

Figure 14.10: Original CenteredOval

Figure 14.11: Resized CenteredOval

Figure 14.12: The baseline

Figure 14.13: Text and baseline in a frame

Figure 14.14: Text in a frame

Figure 14.15: Font Lab

Figure 14.16: Font Lab with an exotic font

Figure 14.17: Initial Frame Lab display

Figure 14.18: Frame Lab with custom configuration

Figure 14.19: The result of Figure 14.18

Chapter 15: Components

Figure 15.1: A component sampler

Figure 15.2: A button in a frame

Figure 15.3: A fancy button

Figure 15.4: A simple checkbox

Figure 15.5: A checked checkbox

Figure 15.6: Three checkboxes and a button

Figure 15.7: Checkboxes as radio buttons

Figure 15.8: Multiple checkbox groups

Figure 15.9: A choice

Figure 15.10: An expanded choice

Figure 15.11: Two choices

Figure 15.12: Choices with labels

Figure 15.13: A menu in a menu bar

Figure 15.14: A menu with a separator

Figure 15.15: Hierarchical menus

Figure 15.16: Two text fields

Figure 15.17: A text area

Figure 15.18: Multiple checkbox groups

Figure 15.19: A text area with scroll bars

Figure 15.20: A pair of disappointing scrollbars

Figure 15.21: Flow layout manager

Figure 15.22: Wider

Figure 15.23: Narrower

Figure 15.24: Left-aligned

Figure 15.25: Flow Lab

Figure 15.26: Scrollbar at North

Figure 15.27: North and South occupied

Figure 15.28: North, East, and West occupied

Figure 15.29: North, East, West, and Center occupied

Figure 15.30: A panel in a frame

Figure 15.31: Layout lab

Figure 15.32: Layout lab's frame editing dialog

Figure 15.33: Layout Lab with an added panel

Figure 15.34: A button in a panel in a frame

Figure 15.35: Layout Lab makes it so

Figure 15.36: No layout manager

Chapter 16: Events

Figure 16.1: A GUI waiting for events

Figure 16.2: A button that sends events

Figure 16.3: Simple Event Lab: initial screen

Figure 16.4: Simple Event Lab with simulated buttons

Figure 16.5: Simple Event Lab with a listener class

Figure 16.6: Simple Event Lab with a listener object

Figure 16.7: Simple Event Lab continued

Figure 16.8: One listener object for many buttons

Figure 16.9: Simple Nim GUI

Figure 16.10: Nim Lab

Figure 16.11: Nim, with output to a text area

Figure 16.12: Nim with graphical output

Figure 16.13: Nim with graphical output, game in progress

Figure 16.14: Enabled and disabled buttons

Figure 16.15: Nim with disabled buttons

Figure 16.16: Check box and choice

Figure 16.17: Receiving events from a check box and a choice

Figure 16.18: Event Lab

Figure 16.19: Scrollbar and text field

Chapter 17: Final Project

Figure 17.1: Final Project

Figure 17.2: Final Project, with lines

Figure 17.3: Menu schematic

Figure 17.4: Teting the menu's look

Figure 17.5: Window, Frame, and FileDialog

Figure 17.6: File dialog box configured for opening

Figure 17.7: Too many radio buttons

Figure 17.8: Testing color selection

Figure 17.9: GUI layout

Figure 17.10: Positioning text

Appendix A: Downloading and Installing Java

Figure A.1: Windows SDK file layout