Java – How to run Eclipse using Oracle’s new 1.7 JDK for the Mac

eclipsejavamacos

I'm trying to get the new 1.7 JDK working with Eclipse (this is Oracle's official release).

I don't mean just pointing Eclipse to it so you can use it in projects, this works fine, but actually making Eclipse run using the 1.7 JVM.

I've moved the new JVM to the top of the list in Java Preferences, but Eclipse still starts with 1.6. If I disable 1.6 in Java Preferences I get a dialog immediately after I double-click on Eclipse saying "Failed to create the Java Virtual Machine".

edit: I added the following to my eclipse.ini just before the -vmargs:

-vm
/Library/Java/JavaVirtualMachines/1.7.0.jdk/Contents/Home/bin/java

Yet in the Eclipse installation details dialog I still see:

java.runtime.version=1.6.0_31-b04-415-11M3646

edit 2: here are the contents of my eclipse.ini file: https://gist.github.com/2512578

Best Answer

There is another way. Please add two following lines before -vmargs in the .ini file:

-vm 
{YOUR_JAVA_7_HOME}/jre/lib/server/libjvm.dylib

(remember these need to be separate lines) and also add a corresponding entry in 'Info.plist' file (add or modify array items under "Eclipse" key - each string child element corresponds to a command line parameter).

...
<key>Eclipse</key>
<array>
<string>-vm</string>
<string>/{MY_VM_HOME}/jre/lib/server/libjvm.dylib</string>
...
</array>

Alternatively just use -vm {YOUR_JAVA_7_HOME}/lib/server/libjvm.dylib command line parameter when running eclipse from terminal.

Related Solutions

Java – How does the Java ‘for each’ loop work

for (Iterator<String> i = someIterable.iterator(); i.hasNext();) {
    String item = i.next();
    System.out.println(item);
}

Note that if you need to use i.remove(); in your loop, or access the actual iterator in some way, you cannot use the for ( : ) idiom, since the actual iterator is merely inferred.

As was noted by Denis Bueno, this code works for any object that implements the Iterable interface.

Also, if the right-hand side of the for (:) idiom is an array rather than an Iterable object, the internal code uses an int index counter and checks against array.length instead. See the Java Language Specification.

Java – How to set java_home on Windows 7

Find JDK Installation Directory

First you need to know the installation path for the Java Development Kit.

Open the default installation path for the JDK:

C:\Program Files\Java

There should be a subdirectory like:

C:\Program Files\Java\jdk1.8.0_172

Note: one has only to put the path to the jdk without /bin in the end (as suggested on a lot of places). e.g. C:\Java\jdk1.8.0_172 and NOT C:\Java\jdk1.8.0_172\bin !

Set the JAVA_HOME Variable

Once you have the JDK installation path:

Right-click the My Computer icon on your desktop and select Properties.
Click the Advanced tab, then click the Environment Variables button.
Under System Variables, click New.
Enter the variable name as JAVA_HOME.
Enter the variable value as the installation path for the Java Development Kit.
Click OK.
Click Apply Changes.

Note: You might need to restart Windows

The complete article is here, on my blog: Setting JAVA_HOME Variable in Windows.

Best Answer

Related Solutions

Java – How does the Java ‘for each’ loop work

Java – How to set java_home on Windows 7

Related Topic