Netbeans Maven Error: javac: invalid target release: 1.7

Question

I am trying to build an existing maven project on a fresh install of the latest netbeans but am getting the following error, any help is much appreciated:

Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project com.rory.ngp.test: Compilation failure
Failure executing javac, but could not parse the error:
javac: invalid target release: 1.7

I think it has something to do with paths but am not sure exactly. Here is the contents of my /usr/lib/jvm directory;

bash-4.1$ pwd
/usr/lib/jvm
bash-4.1$ ls   
java                               java-openjdk   jre-1.6.0-openjdk.x86_64
java-1.5.0-gcj-1.5.0.0             jre            jre-gcj
java-1.6.0                         jre-1.5.0      jre-openjdk
java-1.6.0-openjdk-1.6.0.0.x86_64  jre-1.5.0-gcj
java-1.6.0-openjdk.x86_64          jre-1.6.0

score 14 · Accepted Answer · answered Jan 25 '12 at 15:32

14

Thanks oers, you were right.

I needed to install JDK 1.7/Java 7, and then edit the netbeans config file in the netbeans install directory /etc/netbeans.conf to point to where I installed the new version of Java:

    # Default location of JDK, can be overridden by using --jdkhome <dir>:
    netbeans_jdkhome="/users/rory/Documents/jdk1.7.0_02"

answered Jan 25 '12 at 15:32

Rory

1,805
7
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2

Since I had the same problem with IntelliJ: The solution there is to set the JRE version in the Maven|Runner project settings. – sunside Mar 07 '12 at 21:47
It seems to be a strange fact that if you install a new jdk when Netbeans is already installed, you need to manipulate the netbeans_jdkhome as describe here. Netbeans should be able to detect which is the latest jdk and use that if what the netbeans_jdkhome points to is not found. This must be a bug in Netbeans from the days of old. – carl Sep 14 '15 at 10:17

score 9 · Answer 2 · answered Jan 25 '12 at 12:06

9

Add the following to your pom under build and plugins it should target 1.6

        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.6</source>
                <target>1.6</target>
            </configuration>
        </plugin>

answered Jan 25 '12 at 12:06

Paul Whelan

16,574
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Thanks, but when I changed it I now get the error: diamond operator is not supported in -source 1.6 (use -source 7 or higher to enable diamond operator) ---- (Alt-Enter shows hints) – Rory Jan 25 '12 at 14:24
3

@Rory if you need java 1.7 language features then you have to install a java 1.7 jdk on your machine – oers Jan 25 '12 at 14:33

score 0 · Answer 3 · answered Aug 20 '13 at 11:56

<plugin>
 <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-compiler-plugin</artifactId>
   <version>2.3.2</version>
    <configuration>
     <source>1.6</source>
      <target>1.6</target>
       <compilerArguments>
            <endorseddirs>${endorsed.dir}</endorseddirs>
       </compilerArguments>
   </configuration>
</plugin>

If Platform or Source/Binary Format in project properties is not same with this configuration it gives error

Netbeans Maven Error: javac: invalid target release: 1.7

3 Answers3