Difference between revisions of "Hello World in Eclipse"

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(Java Perspective)
Line 44: Line 44:
 
*Tick public static void main…
 
*Tick public static void main…
 
*You don’t want the other options
 
*You don’t want the other options
 +
<br clear=all>
 +
 +
==System.out.println==
 +
[[Image:Eclipse_Hello.png|Change main|thumb]]
 +
*Replace the TODO comment line with:
 +
*System.out.println(42);
 +
*lick the green Run button to make it go.
 +
**You can also use: '''Ctrl F11'''

Revision as of 02:24, 16 November 2013

Download Eclipse

Pick the EE (Enterprise Edition)


Unzip and make a shortcut

No install - just unzip it
  • There is no install - simply unzip it to a convenient locations (for example c:\)
  • You can start by double clicking eclipse.exe
  • You can make a shortcut on your desktop


Welcome Screen

Close this pane
  • Accept the default workspace and move on
  • The welcome screen can be closed - you will not need it again


New project

File New Project
  • You want to start with a Java Project
    • A project can include many classes and other things
  • File / New / Project...
  • You want to start a Java Project


New Project Wizard

Eclipse Project Wizard.png
  • Set the Project Name to FirstProject (Use a capital for the first letter)
  • Pick Java Project to start with
  • Call your project FirstProject and check that you have at least 1.5 as the Execution Environment.
    • Note that 1.5 is often referred to as 5; similarly 1.7 is version 7.
    • The big changes happened at 1.5
  • You can just accept the defaults regarding file locations and perspectives.


Java Perspective

Make friends with this layout
  • You are now looking at the Java perspective – this is the arrangement of panes.
  • You are going to see this window a lot.
  • Your project files are listed in the Package Explorer on the left hand side


Java Perspective

Your new Class is Hello
  • File/New/Class
  • Call your class Hello use a capital H.
  • Tick public static void main…
  • You don’t want the other options


System.out.println

Change main
  • Replace the TODO comment line with:
  • System.out.println(42);
  • lick the green Run button to make it go.
    • You can also use: Ctrl F11