The following are the system requirements for installing the JDK and the JRE on macOS:

Eclipse looks for a JRE to use in various places if not specified in eclipse.ini. Try specifying the 1.8 JDK/JRE in eclipse.ini, something like this in your case: (note the separate lines). Eclipse is an open source community. Find downloads for packages, developer builds, and projects. Includes a complete JRE plus tools for developing, debugging, and monitoring Java applications. Administrators running applications on a server: Server JRE (Server Java Runtime Environment): For deploying Java applications on servers. Includes tools for JVM monitoring and tools commonly required for server applications, but does not include.

• Any Intel-based computer running macOS.

• Administrator privileges.

  You cannot install Java for a single user. Installing the JDK and JRE on macOS is performed on a systemwide basis for all users. Administrator privileges are required to install the JDK and JRE on macOS.

• When you install the JDK, it also installs the JRE. However, the system will not replace the current JRE with a lower version.

  To determine the current JRE version installed on your system, see Determining the JRE Version Installed on macOS. To install an earlier version of the JRE, you must first uninstall the current version. See Uninstalling the JRE on macOS.

• When you install the JRE, you can install only one JRE on your system at a time. The system will not install a JRE that has an earlier version than the current version.

  To determine the current JRE version installed on your system, see Determining the JRE Version Installed on macOS. To install an earlier version of the JRE, you must first uninstall the current version. See Uninstalling the JRE on macOS.

  Note:

  Installing a JRE from Oracle will not update java -version symlinks or add java to your path. To do this, you must install the JDK.

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• 2Specifying the JVM

Eclipse startup is controlled by the options in $ECLIPSE_HOME/eclipse.ini. If $ECLIPSE_HOME is not defined, the default eclipse.ini in your Eclipse installation directory (or in the case of Mac, the Eclipse.app/Contents/MacOS directory) is used.

eclipse.ini is a text file containing command-line options that are added to the command line used when Eclipse is started up. There are many options available, please see here.

Important:

1. You can, and should, experiment with changes to the launch command from your Command Prompt/Terminal before changing the eclipse.ini itself.
2. Each option and each argument to an option must be on its own line.
3. All lines after -vmargs are passed as arguments to the JVM, so all arguments and options for eclipse must be specified before -vmargs (just like when you use arguments on the command-line)
4. Any use of -vmargs on the command-line replaces all -vmargs settings in the .ini file unless --launcher.appendVmargs is specified either in the .ini file or on the command-line. (doc)
5. -XX VM arguments are subject to change without notice, even during minor updates. If the JVM keeps exiting with code 2 instead of starting Eclipse, try removing them.
6. Make a backup--keep a copy of the original contents on hand so you don't break your installation and have to download it all again.

By default, eclipse.ini looks something like this (the exact contents will vary based on operating system and which Eclipse package you have):

Among other things, this sets the heap space to 40MB initially and a maximum of 512MB, and also specifies a maximum PermGen size of 256MB. A max heap of 512MB might be OK for some users, but it's often necessary to bump that value up for large project sets or when some third-party plugins are installed.

One of the most recommended options to use is to specify a specific JVM for Eclipse to run on. Doing this ensures that you are absolutely certain which JVM Eclipse will run in and insulates you from system changes that can alter the 'default' JVM for your system. Many a user has been tripped up because they thought they knew what JVM would be used by default, but they thought wrong. eclipse.ini lets you be CERTAIN.

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The following examples of eclipse.ini demonstrate correct usage of the -vm option.

Note the format of the -vm option - it is important to be exact:

• The -vm option and its value (the path) must be on separate lines.
• The value must be the full absolute or relative path to the Java executable, not just to the Java home directory.
• The -vm option must occur after the other Eclipse-specific options (such as -product, --launcher.*, etc), but before the -vmargs option, since everything after -vmargs is passed directly to the JVM.
• For the 32-bit Eclipse executable (eclipse.exe on Windows) a 32-bit JVM must be used and for the 64-bit Eclipse executable a 64-bit JVM must be used. 32-bit Eclipse will not work with a 64-bit JVM.

Here is an example of what eclipse.inimight look like on a Windows system after you've added the -vm argument and increased the maximum heap space:

Remember that the exact values will differ slightly depending on operating system and Eclipse package.

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-vm value: Windows Example

This is how the -vm argument might look on Windows (your exact path to javaw.exe could be different, of course. Please beware of paths that contain a space, the examples below do not have any spaces, and using quotation marks around paths that contain spaces does not seem to work):

Or

An alternative way is to insert the following VM option before the -vmargs option in the Eclipse shortcut's properties (edit the field Target inside the 'Shortcut' tab):

or

This might not work on all systems. If you encounter 'Java was started but returned exit code=1' error while starting the eclipse, modify the -vm argument to point to jvm.dll (exact path could be different):

Jvm 1.8 Mac

-vm value: Linux Example

This is how the -vm argument might look on Linux (your exact path to java could be different, of course):

-vm value: Mac OS X Example

On a Mac OS X system, you can find eclipse.ini by right-clicking (or Ctrl+click) on the Eclipse executable in Finder, choose Show Package Contents, and then locate eclipse.ini in the Eclipse folder under Contents. The path is often

For versions of Mac OS X 10.7+ the location is something like /Library/Java/JavaVirtualMachines/<JRE_NAME>/Contents/Home/bin

Jvm 1.8 Mac Eclipse Download Version

For example, the latest JDK 1.8 (as of July 2015) is/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/bin

For standard Mac Java installations and so you don't have to continually update the setting when you install new Java VMs, set the -vm flag to simply /usr/bin:

Note: Occasionally, depending on the version of your Mac OS and whether or not you had already run this particular Eclipse installation before, upon launch after changing the -vm, you may run into an error that says 'the application is damaged and can't be opened'. This is the expected behavior since you just modified a signed/notarized app. This problem can be overcome by opening the Eclipse application once before changing the eclipse.ini file. Alternatively, running of the following command can fix the issue too: xattr -cr Eclipse.app

Jvm 8 Download

Here is additional information:

Perhaps the best way to determine the location for the JDK you want to use is with the utility

From the list produced by that command, select the JDK you want to use and put that path into the eclipse.ini file, making sure to append /bin/java to the path (eg, /Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents/Home/bin/java

Note that the full path can either include java or not. For example, the following will both work: