I'm getting into Java7 development and I've added JDK7 into Java Platforms and have selected it in the project properties.

But when I'm compiling, I get messages like:

warning: java/lang/Boolean.class(java/lang:Boolean.class): major version 51 is newer than 50, the highest major version supported by this compiler.
It is recommended that the compiler be upgraded.

and

javac: invalid target release: 1.7
/Applications/NetBeans/NetBeans 7.1.app/Contents/Resources/NetBeans/harness/suite.xml:184: The following error occurred while executing this line:
/Applications/NetBeans/NetBeans 7.1.app/Contents/Resources/NetBeans/harness/common.xml:206: Compile failed; see the compiler error output for details.

So as far as I understand Netbeans is using javac 1.6. How can I change in to 1.7?

EDIT:

I'm writing a NetBeans Platform app and in main app Properties I've set: Java Platform = JDK 1.7. And in one of the module's Properties I've set Source level = 1.7.

EDIT2

  • Mac OS 10.7.3
  • NetBeans IDE 7.1 (Build 201112071828)
  • openjdk version "1.7.0-internal"
  • OpenJDK Runtime Environment (build 1.7.0-internal-uko_2012_02_15_11_51-b00)
  • OpenJDK 64-Bit Server VM (build 23.0-b15, mixed mode)

suite.xml (184 is the second line here)

<target name="build" depends="-init,branding,release,-hide-excluded-modules" description="Build all modules in the suite.">
    <subant target="netbeans" buildpath="${modules.sorted}" inheritrefs="false" inheritall="false">
        <property name="cluster.path.evaluated" value="${cluster.path.evaluated}"/> <!-- Just for speed of pre-7.0 projects -->
    </subant>
</target>

com

netbeans javac java-7
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