Objective. Assumptions. Procedure

Transcription

1 Installing Java programming tools on Mac OS 10.8 (Mountain Lion) Objective This document will guide you through installing and configuring the necessary software to write Java programs on your Mac computer. Assumptions 1. You are connected to the internet. 2. You have administrative rights to your computer (you can install software). Procedure Step 1 Open the internet browser of your choice and visit the site: java.oracle.com. Step 2 Visit the Java SE downloads site by clicking on the Java SE link under Top Downloads. 1

2 Step 3 Select the Java 7 JDK by clicking on the image link indicated below. 2

3 Step 4 Accept the license by clicking on bubble by Accept License Agreement on the next page. 3

4 Step 5 Click on the Mac OSX x64 download link to begin downloading the JDK. 4

5 Step 6 Wait for the download to complete then navigate to the download folder on your computer. Double click the downloaded file to begin the installation of the Java Development Kit (JDK). Step 7 Once the disk image opens the following window will appear. Double click the installation icon to begin the JDK install. 5

6 Step 8 When the installer begins click the Continue button. 6

7 Step 9 Allow the installer to begin by clicking the Install button. 7

8 Step 10 When prompted enter your password to allow the installer to proceed. 8

9 Step 11 When the installation is complete you may click the Close button. Step 12 Open the internet browser of your choice and visit the site: eclipse.org. 9

10 Step 13 Click on the Get Started now Download Eclipse box to download the Eclipse software. 10

11 Step 14 From the list presented pick the Eclipse IDE for Java Developers and the Mac OS X 64 Bit link. 11

12 Step 15 The following page contains the download link. The link s text may be slightly different, but it s location in the page should be the same. Click that link to begin the download. 12

13 Step 16 Wait for the download to complete then navigate to the download folder on your computer. While you re here you can eject the JDK disk image from the devices list. Then open the new Eclipse file by double-clicking on the file we ve just downloaded. 13

14 Step 17 Your Mac will expand the Eclipse archive and there will now be an eclipse folder. Drag that new eclipse folder to the left into the Applications listing under FAVORITES. 14

15 Step 18 Then browse to Applications and find the eclipse folder within. Open the folder. To put Eclipse on your Dock, drag the Eclipse application to your Dock bar on the bottom of your screen. Step 19 You now have a link on your Dock to easily launch the Eclipse IDE. The program looks like this in your doc 15

16 Step 20 To run eclipse, we ll need to change Mac OS X s security settings to allow us to run downloaded programs. Open your system preferences and select Security & Privacy. 16

17 Step 21 Unlock the General settings tab and select Allow applications downloaded from: Anywhere. To be safe lock the settings again when you re done making changes. Then close the System Preferences window. 17

18 Step 22 Now we can run Eclipse. Go ahead and click the icon on the dock. Your Mac will prompt you that it s a downloaded application. Click the Open button. Step 23 Eclipse will begin to open. It will then ask you where you d like to store your documents. Use the default location. Be sure to check the Use this as the default and do not ask again button. Click OK to continue. 18

19 Step 24 Once Eclipse is loaded it will present us with an introductory screen. Click the arrow on the right to move to the Workbench. 19

20 Step 25 In the changed window, right click on the empty left column titled Package Explorer. From the menu that appears, select New then Java Project. 20

21 Step 26 In the window that appears, enter Lab0 for the Project name, select Use project folder as root for sources and class files then click the Finish button. 21

22 Step 27 You may encounter a warning about some software not being installed. For example I got a warning that Git wasn t installed on my Mac. Check the box to prevent future warnings then click OK. 22

23 Step 28 Once Lab0 is created, right click on it and select New Class from the menus that appear when you right click on it. 23

24 Step 29 In the window that appears, enter HelloWorld for the Name. Check the box for public static void main (String[] args). Uncheck the box for Inherited abstract methods. Then click Finish. 24

25 Step 30 In the new HelloWorld.java file, highlight lines 3 through 5. They should have the following content: /** args */ Delete these lines. Notice that after deleting these lines there is an asterisk (*) in front of the document title in the top tabs. This indicates that the file has not been saved. Hit the keys +S to save. Alternatively you may use the drop down menus. 25

26 Step 31 Replace the text // TODO Auto-generated method stub with System.out.println("Hello World!");. If you accidentally delete the indentation too, use the TAB key to reposition the cursor. Then save the file again. This is now a complete program and is ready to run. 26

27 Step 32 To run your program click the green Run icon in the icon strip on the top of the program window (it looks like a play button to me). In the bottom of the eclipse window the tab will switch to Console and you will see Hello World! appear. Your program has now run and has greeted the entire world! Conclusion We have installed the Java Development Kit (JDK), the Eclipse IDE (Integrated Development Environment) and written our first program. If you d like to install this software on a Windows 7 computer, see the Win documentation. 27