Eclipse Java IDE

1
Eclipse Java IDE
2
Overview

• Where to get it
• How to install it
• Running the program for the first time
• Creating a java application

3
Downloading Eclipse

• http//www.eclipse.org/downloads/
• This page can be found under Required Software
  under the course homepage.
• Available for most operating systems
• You will need a JRE installed to run Eclipse

4
Installation

• The installation wizard asks the user where the
  program will be installed.
• You can use default options or choose another
  directory.
• A desktop shortcut is created by default.

5
Running Eclipse

• The first time you run Eclipse you will be
  prompted for a workspace.
• This is a directory where projects are saved to.
• You are then presented with the Welcome Screen.

6
Creating a Java Project

• Select Filelt New lt Project lt Java Project lt Next
  and then chose the file name, then click Finish.
• In the Package Explorer on the left, your new
  project will appear.

7
Creating a Package

• Select File lt New lt Package
• Select which source folder you want the package
  to be in and then name it.
• Click Finish, you should see your new package in
  the Package Explorer.

8
Creating a Class

• In the Package Explorer, right click on the
  package name and select New lt Class and name it.
• You are then given options to chose which method
  stubs you would like to create.
• After you are done, click Finish.

9
Creating a Class

• The editor window will show a basic Java program
  similar to the one below.

10
Running your Java Program

• Each time you save your program, it automatically
  compiles it for you.
• To run your program select Run lt Run As lt Java
  Application.
• If you try to run without saving a dialog box
  will appear asking you what to save.

11
Running your Java Program

• If you have any errors in your program you can
  view them by selecting Window lt Show View lt
  Problems.
• A small window will open up at the bottom with
  the tab Problems.
• There will also be a little icon, a red X, on the
  left of the line where the error occurred.
• This icon will give you information about the
  error.

12
JavaDoc

• Eclipse can automatically generate JavaDoc
• Go to the top of a method or class definition and
  type
• /
• Press enter
• JavaDoc is automatically generated

13
Auto Complete

• After typing a class name simply type a period
  and a list of methods or subclasses pops up.
• You can keep typing or select from the list.

14
Debugging

• Break points can be set by right clicking on the
  line number.
• The breakpoints can be toggled by right clicking
• RungtDebug Last Launched will run the program and
  stop at the breakpoints.
• Resume can be selected to go to the next
  breakpoint.