Eclipse (& Java Tools)

Installing Eclipse

• Go to the Eclipse downloads area
• Download a starting version (Classic recommended)
• Extract the zip file anywhere on your system
• Run eclipse.exe in extracted location

Setting up Eclipse

• When you first run Eclipse, it will ask you to set a workspace location. This may be any directory where you want new Eclipse projects to be saved by default.
• A welcome Window will display. You may close this window.
• You should be in the Java perspective. The window title will begin "Java -". If this is not the case, click the menu item shown below.
  • If you do not see this menu item, you are probably already in the Java perspective

Anatomy of Hello World (part 1)

	public class Hello {  // This is the class declaration
		public static void main(String[] args) {
			System.out.println("Hello world!");
		}
	}
	

Anatomy of Hello World (part 2)

	public class Hello {  // This is the class declaration
		public static void main(String[] args) { // This is the main method declaration
			System.out.println("Hello world!");
		}
	}
	

Anatomy of Hello World (part 3)

	public class Hello {  // This is the class declaration
		public static void main(String[] args) {// This is the main method declaration
			System.out.println("Hello world!");
			
			/* System is a class.
			   Out is a static member of type PrintStream.
			   println is a method of the PrintStream class. */
		}
	}

• Although you should have a understanding of all of these terms from COP3330, we will go over them all in more detail.

Questions?