Free Java Certification Training & Java Core Training
(Free Web Tutorials)

by Michael Thomas

Free web tutorials on  Sun Certified Java Programmer (SCJP) Training & Java Core Training.

( Home Page: Free Web Tutorials on Java & Web Technologies )

Free Download

• Download - a zip file of the website pertaining to this topic (all content, tutorials, examples, etc...).  Great resource!!!  Work offline!!!

Java Compile note:  Most of these programs were re-compiled with JDK 1.5 on Dec 2005.

The SCJP (Sun Certified Java Programmer) exam tests for a strong knowledge of the Java Language fundamentals.  Here is a quote from Sun's web site:  "This certification is for programmers experienced in using the basic syntax and structure of the Java[tm] programming language. Certification is available for the Java 2 Platform."  Here is a link to Sun's SCJP Home Page.

I've created this web page for those who already know Java and want to review for the exam.  If your familiar with programming and object oriented concepts and want to get started with Java (beginner) then visit and complete Java, Your First Steps ( www.michael-thomas.com/tech/java/javafirststeps/index.htm ).

There are many resources for Java Certification training including books, tutorials, forums, etc...  I have some of those links at Hot Java Sites ( http://www.michael-thomas.com/tech/java/javahotsites.htm ).

I've found that one of the fastest ways to learn a additional programming language is by code examples and tables/charts with concise reference information.  Next you must get your hands dirty in the source code by doing projects.

With this in mind, this web page focuses on learning by:

• Java Jems - Tables and charts that five concise information about a Java concept.

• Java Applets and Applications w/Source Code - See example code in action.

• Java Projects - get your hands dirty in the Java code.

Enjoy, and share your knowledge with a friend!

Read the Disclaimer!

Download & Work Offline Option

Download All Files For This Java Course

• The download from above is the contents of this site:  Java Jems, Source, batch files for Windows platforms, etc...  (OK - your request have been answered!).  This way you have offline access to all of the files. 
  Notes on some files:

  • "..._compile.bat" - Batch files that will compile the .java file if you have javac in your DOS path.

  • "..._run.bat" - Batch files that will run a Java application if you have a JRE installed.

  • "..._view.bat" - Batch files that will run Sun's "appletviewer.exe" to view a Java Applet launched from a HTML file.

  • Viewing source files - Info on how to view the .java file directly from my web site, without downloading the file first.

  • NOTE:  I have an "Eclipse - First Steps" web page that will help you setup the IDE and install this zip file so that you can use the IDE to view and compile all my examples that you see at this web site.  That way you can work offline with my source code and html training files.

• Under Construction (Not Working!!!):  How to Configure IIS to View a ".java" file just like a ".txt" file.
  Load IIS, right click on "Default Web Sites", tab "Home Directory", click "Configuration", find the ".java" entry and "Remove" it, click "Apply", then "Ok".
  Extension: .java
  Executable: C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727
  Verbs: Limit to: GET,HEAD,POST,DEBUG
  Check - Scripted engine
  Check - Check that file exists

  • zzzVeiwSourceTest_TextFile.txt - see if you can read a ".txt" file.

  • src/zzzVeiwSourceTest_JavaFile.java - see if you can read a ".java" file.

   

General Information

Warning:  MS JVM (Microsoft's Java Virtual Machine) has issues running applets compiled with the current SDK (ex: 1.5 and others).  Sun's JVM works fine.  Therefore, you must install Sun's JVM to view my applets.

• Java Certification Training Site Issues - list of issues that I need to work on when I get time.
• Java Info & Terminology - (General) General interesting information about Java - it's environment and the terminology used.
• Java Jem: OOP Similarity - Java similarity between OOP & Procedural programming.
• Introduction to OOP - (not completed)
• Testing Objectives - Sun's Java Certification Testing Objectives.
• Browser Information - Which browser should I use?   How do I Enabling Java.  What browsers support Java Swing? Info on other problems. 
  • Is your browser having trouble loading an applet?  Taking to long to load?
• Vendors JVM Versions - You don't need to look at this link.  It has some information on Vendors and there JVM implementations.
  

Projects & Testing

You can skip this section and go straight to the next section.  I used these projects and tests in a class I taught at a university.

• Java Projects - List of projects which will help you get your hands dirty in the Java sources code.  In this web page I'll place a code by the link that has code examples that you can learn from to complete the projects (ex: (P1), etc...) 

• Java Project Tests - Testing of the knowledge you gained from the projects.
  

Java Jems and Examples

Using DOS for Logging (Compile Errors and/or Runtime Messages)

• DOS Log of Compile Errors - Maybe helpful if your not using a Java IDE.
• DOS Log using System.out.println() - Use this example if you want the System.out.println() output to go to a text file.

Misc Notes (FYIs)

• To create a text file that can be read in NotePad with line feeds use:  \r\n
  (Note:  this is he old char(12), char(10) concept).

Intro to Java Applets & Applications

• Java Applications (Download & Run from a JVM only!)
  • Java Jem: Java Applications - (not completed)
  • Hello World: Simple Java Application - very basic Java application.
  • Hello World: App w/ Parms & Comments (P1) - Basic Java application that writes to the Java Console and accepts command line parameters.   Has comments (single line, multi-line, and JavaDoc.
  • Hello World - Application w/ AWT's Frame (P2) -  Java application that extends java.awt.Frame.  Use getInsets() to locate beginning of visible area.  Also use setTitle & setSize().
  • Hello World - Application w/ Swing's JFrame (P3) - Java application that extends java.awt.Frame.  Use getInsets() to locate beginning of visible area.  Also use setTitle & setSize().
  • Hello World - Application w/ Swing's JOptionPane (P4) - Java application showing the use of JOptionPane().
• Java Applets (Run from a browser)
  • Hello World: Applet (AWT) (P5) - a basic Applet that runs from a browser.  Uses JDK 1.1 AWT code which will work with HotJava 3.x, IE 4.x, 5.x and NS 4.x browsers
    • Object Tag using "classid=java: <class name>" attribute - HTML 4.0 Specs deprecates the Applet tag and uses the Object tag.  Netscape 6.0 & IE 5.5 implements this tag.  Warning:  I wouldn't use this tag yet.  Stay with <applet>.
    • Hello World - Applet AWT (Compiled with JDK1.2) - Compiled with JDK1.2.
  • Hello World: JApplet (Swing)  (P6) - a basic JApplet that runs in a browser that supports Swing (JDK 1.2).  Will work with NS 6.x.  Sun's appletviewer views the JApplet only - no HTML.
  • Hello World: Applet (AWT) w-Parms, paint() & init() (P7) - basic Applet that shows how to pass parameters from HTML into an Applet and the order that init() and paint() is called.
  • Hello World: Applet (w/AWT Components)  - basic Applet with some Components: button, textfield, label, etc...
• Java Applet and/or Application (Run from JVM or Applet!)
  • Java Jem: Creating Java Programs to work as Applet and/or Applications
  • Hello World: Applet or Application (AWT) - (Applet & Frame) can be run from: browser or command line  (JDK1.1 compatible).
  • Hello World: Applet or Application (Swing) - (JApplet & JFrame)
    • WARNING: Browser notes
      • Will not view with IE 4 or 5 or Netscape 4 with out using the Java PlugIn and additional code added in the HTML to call the plugin.
      • Works view with Netscape 6 or higher.
      • HotJava 3.0 (from Sun) implements 1.1.7B therefore it will not work either.
      • Click Here to view with IE 5 or NS 4 if you have installed the Sun Java Plug-In version 1.0.3_01 (Looks like it only wants this version of the plug-in! NASTY!). I used Sun's HTMLConverter to create the HTML code.
• Java Docs - this subject will covered later in more detail, but you should go ahead and get familiar with and begin using JavaDoc as early as possible.
  • Java Doc - This is an example HTML output of running "javadoc" on the "MyHello..." programs.  Normally you create JavaDocs for an application that has several packages.  I created this very simple example for training purpose only.
    See the files:
    MyHello__javadoc.bat - the batch file that reads the spec file and creates the JavaDoc HTML.
    MyHello__javadoc.txt - the spec file used to create the HTML JavaDoc (layout & files etc...)
    MyHello__javadoc_overview.html - The HTML output from JavaDoc.
• Java Applets Basics
  • Java Jem:  Applet Class
  • MyApplet - Applet Class - how it works: init(), paint(), repaint(), update(), start(), stop().  How to pass HTML Parameters.
  • HTML & Applets - (not completed).  Use JavaScript to call methods in Applets.
    Note: MAC IE does not support JavaScript calls to Applets as of June 2001.

Java - Training Applet/Application

• Training Examples via Applets and Applications -  I will be using this style of Applet to teach the Java Language Fundamentals.  Runs as Applet or Application.  This java program gets it's screen size from parms (HTML or DOS) and runs as an Applet or Application (JDK1.1 compatible).  Get familiar with the source code of this Applet before continuing.  If you want to print the web page you will need to use Netscape because IE hangs (IE 5.50.4143.0600IC, maybe others) when printing a TextArea for some reason.
  Note:  This is the new format.  Many of the Training Applets are still using the old format.
  • Training Example (JDK1.1) -  Used when training on Java language fundamentals (JDK1.1 & AWT) because the most common browsers (IE 4.x, IE 5.x, NS 4.x) cannot display JDK1.2 code.  You can also run them as an Java Application.   Note: GUI AWT screens are JDK1.1 compatible.  This class extends another class that hides come of the common support code (can run as Applet or application also).
  • Training Example (JDK1.2) - Used when training on Java language fundamentals (Swing >=JDK1.2) .  You will need Netscape 6 or Java's appletviewer to view these Applets.  You can also run them as an Java Application.  This class extends another class that hides come of the common support code (can run as Applet or application also).

Java Language Fundamentals

• Keywords, Identifiers, Primitive Data Types, Literals, Escape Characters, Bases
  • Java Jem: Keywords - Java's reserved words (aka keywords).
  • Java Jem: Identifiers - Legal names: variables, methods, classes, identifiers, etc...
    • MyIdentifiers.html (P8)- Example of Legal & Illegal names.
  • Java Jem: Literals
    • MyLiterals (P8) - assigning literal values to Primitives (also a String).
  • Java Jem: Primitive Data Types - Primitives data types, casting of Primitives, Exceptions thrown by Primitives, etc...
    • MyDataTypes (P8) - examples of Data Types.
  • Java Jem: Escape Sequences
    • MyEscape (P8) - Escape Characters.
  • Java Jem- Bases
    • (not completed - see DataTypes for some examples.)
  • Java Jem - Data Type Conversions
    • BigInteger, BigDecimal, etc... (need to add).
    • Need to add others...
• Operators, Assignments, Comparisons
  • Java Jem: Operators, Assignments, Comparisons (P9) - Arithmetic operators (+,-,*,/,% (modulus) ),  Equality operators (==, !=, >, <, >=, <=), Increment and decrement operators (x++,++x, x--, --x),  Arithmetic assignment operators (+=, -=, *=, /=, %=), Precedence of operators, bitwise shifting (>>, <<, >>>), bitwise comparison ( |, &) and logical shortcut comparison (||, &&).
    • MyOperators - examples of Operators.
  • Java Jem: Objects - "==" vs equals()
    • Object's: == vs equals() - examples of using the "==" vs equals() with Objects, and how literal String assignments work (tricky and on the exam!).
• Flow Control
  • Java Jem: Flow Control - (not completed)
    • Flow Control- Switch (P12) - examples of: switch
    • Flow Control- If-Else (P10) - examples of:  if/else & inline if '?'
    • Flow Control- For (P10) - examples of:  for (for loop)
    • Flow Control- While (P11) - examples of:  while & do while   (while loops)
  • Java Jem: Exceptions - (not completed)
    • MyExceptions - (not completed)
• Strings (also StringBuffer, StringTokenizer, etc..)
  • Java Jem: String Class - (not completed)
  • String Class - (P13) - example of methods in the String class.
  • StringBuffer Class - (P13) - example of using StringBuffer.
  • StringTokenizer Class (P13) - example of using StringTokenizer
• Arrays
  • Java Jem: Arrays
    • MyArrays - (P16) Declare, Initialize, Instantiate, pass by reference, arrays of Primitives, and arrays of Objects.
    •  
• Wrapper Classes: Integer, Short, Long, Byte, Float, Double, Boolean, Character
  • Java Jem: Wrapper Classes
    • Wrapper Classes (P8, P13, P15) - Integer, Double, Character.
• Garbage Collection
  • Java Jem: Garbage Collection - notes on garbage collection.
  • MyGarbage - Garbage collection examples.

Java Object Oriented Programming (00P) Concepts.

• Access Modifiers
  • Java Jem: OOP Access & Hierarchy
  • Java Jem: Source File Layout
  • MySrcFile - Classes, Constructors, Methods and other .java source file components.
  • MyStatic - static vs non-static (variables, methods, & static initializers).
  • MyPackage - shows the use of package & import
• Methods
  • Java Jem: Methods - (started, not completed)
  • MyMethod - (started, not completed)

Selected Java Classes

• Number Formatting
  • DecimalFormat - (not completed)
  • NumberFormat - (not completed)
• Math - java.lang.Math
  • Java Jem: Math Class - (not completed)
  • (not completed) - Math Classes
• JDK1.2 Collections Classes
  • Arrays Class (JDK1.2) - Sorting & Searching of Arrays.
  • List
• JDK 1.1's Util classes that group a collection of objects.
  • Vector Class - capabilities of array-like data structures that can dynamically resize themselves.
    • Java Jem: Vector Class - (not completed)
    • Vector class (JDK 1.1) - (P28) Vector class methods that work with JDK1.1
    • Vector Class (JDK1.2) - Sorting the Vector class with Collections.sort() (ascending or descending order).  Also other JDK1.2 methods added to the Vector class.
  • Stack Class - pop(), push(), peek(), etc..
  • Hashtable Class - high speed scheme for storage and search retrieval of value pairs (key & value).
    • Java Jem: Hashtable Class - (not completed)
    • Hashtable class
  • Properties Class - a Hashtable with option to be persistent using an input/output stream that can be directed to a file.
  • Dates and Java (JDK1.1) - java.util.GregorianCalendar, java.util.Date, java.text.SimpleDateFormat.  Also shows Date Arithmetic using the java.util.GregorianCalendar.

Java - GUI's & Events  (AWT - Abstract Windowing Toolkit & Swing)

• Layout Managers
  • MyFlowLayout - (P22) FlowLayout Manager examples
  • MyBorderLayout - (P22) BorderLayout Manager examples
  • MyBorderFlow - (P22) Border & Flow Control mixed.
  • MyGridLayout - (P22) GridLayout Manager examples
  • MyCardLayout - (P22) CardLayout Manager examples.  Also uses inner classes for ActionListener events.
  • MyGridBagLayout - (P22) GridBagLayout Manager examples.
  • MyLayouts - All Layout Managers (BorderLayout, FlowLayout, GridLayout, CardLayout, GridBagLayout).  Multiple layouts mixed together!  Inner classes that handle ActionListener events.
• AWT (Abstract Windowing Toolkit) Components
  • Basic AWT Components & Events - (P26) Basic Examples of: Button, Label, TextField, Checkbox, Radio, Choice, TextArea, List (single & multi).  Also has event handlers for each component.
  • MyOtherComponents - Canvas, Scrollbar, Scrollpane - (not completed)
  • Frame & Dialog Boxes - (not completed)
• Swing Components (Warning: Must use a browser that supports JVM 1.2:  NetScape 6.0, Sun's Appletviewer, IE than version 5.x with option for Sun JRE enabled, or HotJava greater than version 3.0).  Click here for more information on browsers JVM implementations.
  • Basic Swing Components - Basic Swing components & events: JLabel, JButton, JTextArea, JTextField, JPasswordField, JCheckBox, ButtonGroup, JRadioButton, JList, JScrollPane (ex: scrolling JTextArea), etc...
  • MyOtherComponents - (not completed) JTextPane, JEditorPane, JScrollPane
  • JFrame & Dialog Boxes - (not completed)
  • JTable - (not completed)
• Event Handling
  • MyEvents - (not completed) Registering Event Listeners to components.
    • AWTEvent: ActionEvent, AdjustmentEvent, ComponentEvent, ItemEvent
    • ComponentEvent:  FocusEvent, InputEvent, PaintEvent, WindowEvent
    • InputEvent:  KeyEvent, MouseEvent
  • MyAdapters - Example of using Adapter class.
  • MyMouse - Mouse Events (MouseListener & MouseMotionListener)
• Graphics & Painting
  • MyFont - Font Class, get and set the Font type, size & style.  Use Toolkit.
  • MyColor - Color Class
  • MyGraphics - (not completed) Graphics Class
• Menus & Containers
  • Menus
    • Menu Example (AWT-JDK1.1) - Example of creating a Menu for a Java application.
    • Menu Example (Swing-JDK1.2) - JMenu  (App or JApplet)
  • (not completed) MyContainers - Panel, Frame, Dialog, ScrollPanel
  • (not completed) MyFileDialog

Java - Multimedia (Images,  Animation, Audio)

• Java Jem: Images - (not completed)
  • MyImages

Java - Input/Output (Run as an Application!)

• Java Jem: I/O's - (not completed)
  • File Class (JDK1.2) - (started, but not completed).
  • IO Basics (JDK1.1) - (P32) - Basic (I/O) examples creating files using Java.  Create text files, HTML files, and XML files from Java using PrintWriter & BufferedReader.  Create a data file that stores objects.  Also examples or creating data files with other IO classes: FileOutputStream/FileInputStream, DataOutputStream/DataInputStream, ObjectOutputStream/ObjectInputStream and FileWriter/FileReader.
  •  Creates a .txt (Text File) - Basic (I/O) java application that creates a text (.txt) file.

Java - Threads

• MyThread - (not completed)

Java Tools

• JavaDoc
  • Java Jem: Javadoc - (not completed)
    • Simple use of JavaDoc - (not completed)
    • Advanced use of JavaDoc - (not completed)

Collections Framework   

• Collections Framework - List, Set, Queue, Map

Java Advanced Topics

Outside of your certification studies, you may find these examples helpful.

• Class Check Example (JDK1.1) - example of how to use the Class.forName() method to determine if you have access to a class within the JRE and possibly the jars in the lib/ext directory of the JRE.  (Note: lib/ext works with IE 5.5, does not work with NS 4.75).
• Launching the Default Windows Application using a Java Application - Example of launching the default application (default browser) for a .html page.

Java - 1.1 New Features

• Java Jem: Inner Class - (not completed) Inner Classes & Anonymous Classes
• (not completed) - Serializing Objects
• (not completed) - Reflection & Beans
• Jar - support the use of jars (Java Archive)

Java - 1.2 New Features

• Swing GUI Classes
• Collections Classes

Java - 1.3 New Features

Java -1.4 New Features

• Crimson XML support

Revised: December 12, 2013.

DISCLAIMER:
I have made my best effort in preparing this site. These efforts include the development, research, and testing of the theories and programs. I make no warranty of any kind, expressed or implied, with regard to these programs or to the information contained at this site. I shall not be liable in any event for incidental or consequential damages in connection with, or arising out of, the furnishing, performance, or use of these programs.