1. Before installing Eclipse, confirm that the Java Runtime environment is installed on your Mac. Enter the terminal, type "java-version", if the Java version number is returned is installed, otherwise, first install the Java Runtime Environment:
2. Visit the official Eclipse homepage http://www.eclipse.org/home/index.php, and click on the "Download" button in the top right corner:
3. A variety of download and installation packages are listed here, which can be selected according to your needs. Since we need to develop a Web-based JSP program, choose this one from Java EE:
4. Select a mirror site to download to the desktop of your Mac:
5. Unzip the installation package and drag the extracted eclipse into the finder's application:
6. Running Eclipse, the first run will let you set the workspace workspace location, under the document. At this point, you have successfully installed eclipse.
Mac Install Eclipse