That's very interesting. I just checked my netbeans.conf file and it shows

netbeans_jdkhome="/usr"

I am running Netbeans 12.0 on Mint 20.0 and I don't have any problems with it.

Bayless


On 12/26/20 3:18 AM, Owen Thomas wrote:
No. Now that you mention it, the value doesn't seem reasonable to me either. So, I changed it to /usr/lib/jvm/java-14-openjdk-amd64 and the problems go away. Thanks Geertjan - hopefully that's the end of that.

I'm sure I just downloaded and installed NetBeans without thinking too hard, so I don't know how that could have been set.

On Sat, 26 Dec 2020 at 19:55, Geertjan Wielenga <geertjan.wiele...@googlemail.com <mailto:geertjan.wiele...@googlemail.com>> wrote:

    netbeans_jdkhome="/usr"

    That's what I see in your file above and that can't be right, can it?

    Gj


    On Sat, Dec 26, 2020 at 8:19 AM Owen Thomas
    <owen.paul.tho...@gmail.com <mailto:owen.paul.tho...@gmail.com>>
    wrote:

        Sure Geertjan, here is netbeans.conf from
        ~/netbeans-12.2/netbeans/etc which is the default directory in
        which NetBeans was installed.

        On Sat, 26 Dec 2020 at 16:37, Geertjan Wielenga
        <geertjan.wiele...@googlemail.com
        <mailto:geertjan.wiele...@googlemail.com>> wrote:

            Can you send your netbeans.conf file here so we can see
            what is in there?

            Gj

            On Sat, 26 Dec 2020 at 06:10, Owen Thomas
            <owen.paul.tho...@gmail.com
            <mailto:owen.paul.tho...@gmail.com>> wrote:

                On Mon, 30 Nov 2020 at 19:32, Peter Hull
                <peterhul...@gmail.com <mailto:peterhul...@gmail.com>>
                wrote:

                    I would check:
                    1. Does your Java platform setup look reasonable?
                    (in Tools | Java Platforms )
                    2. Does this error occur for a new project or just
                    existing ones? (e.g. set up a new "Java with Ant"
                    application)
                    I think I've seen something like this before and
                    it was down to the Java platform configuration.


                Hello again. Having acquired my new laptop, I am
                setting it up and have encountered the same problem
                that I was having when I earlier installed NetBeans
                12.2 on another computer. The other was, and the new
                one is running Ubuntu 20.04.

                I tried to create a new project, and I found that the
                error was also occurring; namely that java.lang could
                not be found on almost every line of source code.

                When I look at the Java Platforms dialogue as advised
                by Peter, it presents two entries: "Java 14" and "Java
                14 (Default)". The first entry looks fine, but the
                second one appears to be amiss because as the attached
                screenshot shows that it is missing apparent details.
                The remove option also appears to be disabled, so I'm
                currently at a loss. How do I get rid of this second
                entry?

                  Owen.

                
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