1. Some Tips for Using Eclipse
Creating and running a Java program
Some Tips for Using Eclipse

2. Eclipse
Eclipse is an Interactive Development Environment (IDE) for Java programmers
It provides
A project manager to manage all Java projects throughout the semester
An code editor that helps write correct Java instructions (no need for NotePad++)
An execution environment in which one can compile, test, and run Java programs without leaving Eclipse (no more Command Line use)

3. Eclipse Workspace
An Eclipse Workspace is simply a folder where all Java projects for the semester will be stored
You must remember where it is once you select it
It must be a place where you have write access permissions
It must be a place that you can access when you need it
Example: thumb drive, Z:\ drive, portable hard drive, or cloud storage such as DropBox, OneDrive, Box, etc.
Make sure there is enough space in the Workspace to hold all projects for the semester

4. Eclipse Java projects in your workspace Be sure Java is selected
Java editor – type code here
Error messages and running program output display here

5. Create a New Java Project
Create new Java Project
File/New/Java Project

6. Create New Project – Give it a name
Name the project

7. New Project in the Package Explorer
After creating a new project as on the previous slide, it will appear in the Package Explorer column on the left in Eclipse
Project name
Subfolder for .java files
Java library – contains Java API classes such as String, Scanner, etc.

8. Add a class to the project
Right-click on src. Select New/Class
New project is open

9. Adding a new Driver Class
Assign a package name
Give the class a name
If this is the driver class, add a main method
Make sure this is checked
Click Finish

10. Generated code Fill in class purpose Fill in method description
Fill in body of main method

11. Add Another Non-Driver class
Use same technique without a main method
homework1
Class name

12. Add desired attributes

13. Generate Default Constructor
Deselect All to Generate Default Constructor
Select both
Select me

14. Default Constructor Fill in the Description
Fill in the body of the default constructor

15. Generate Parameterized Constructor
Follow the same process but do NOT deselect the attributes (fields)
All of the following code is generated

16. Fill in parameter details
Resulting code so far . . .
Fill in purpose
Fill in parameter details

17. Generate Getters and Setters
Choose those you want
Remember it is not always desirable to have getters and setters – depends on what needs to remain private
Select me

18. Added Getters/Setters
Depending on which are selected in the previous dialog, a series of getters and setters like this is generated

19. Other code generators
Comment out (or uncomment) the selected lines of code
Add a block of comments to a method you have written
Use the tostr template instead
Generate hashCode ( ) and equals ( ) methods

20. Renaming an attribute or method
Use Refactor / Rename to change the name of a method or attribute of a class, a local variable, parameter, or even the name of a class.
This changes the name everywhere it appears in the code.

21. Which import do I need?
If you refer to a class that is not in your own project or in any imported class, Eclipse puts a red squiggly line underneath the reference

22. Let Eclipse help you select the right import
Hover the mouse cursor over the underlined word and a tool-tip will appear; choose what you want from the tool-tip and Eclipse does rest
Click this choice

23. Alternatively, do this
Press ctrl-shift-O (letter O, not zero) and Eclipse will fill in the correct import for you or it will list possible imports and let you choose one

24. Some other keyboard shortcuts
Description
Ctrl-Numpad_Divide
Collapse all code and comments to single lines
Ctrl-Numpad_Multiply
Expand all code and comments
Ctrl-F
Find and Replace
Ctrl-Shift-F
Format the code file according to Eclipse settings
Alt-Shift-J
Add a JAVADOC comment
Ctrl-Shift-O
Ask Eclipse to help determine needed “import”

25. Right-click on (or in) the driver (code)
Running a program
Right-click on (or in) the driver (code)
To run a program

26. Another way to run the program …
Click me

27. Submitting a project
… from your workspace

28. Project Folder Contents in Workspace
Contains package(s) and .java files for your project
Contains the compiled .class files

29. This folder contains the compiled .class files. Do NOT submit them.
The bin folder
This folder contains the compiled .class files. Do NOT submit them.

30. The src Folder

31. The homework1 Package Folder
Zip ONLY package folder(s) and their .java file contents, naming the zipped folder appropriately. DO NOT zip the containing folders (src or DemoProject)
If you are using a non-Windows machine such as a Mac or a Linux machine, it is your responsibility to be sure your system does NOT add extraneous folders and other items in your zipped folder.

32. Zipping the folders Select the folder(s) to be zipped and right-click
… some other archiving tool such as 7-zip
Use Send To Compressed Folder or …