JDK for Ghidra give me Error: "Could not find or load main class LaunchSupport"

Question

I downloaded JDK 15 for my windows 10 64 bit pc and put the environment variable JAVA-HOME correct and the PATH also. This give me in cmd:

    C:\Users\patpin>java -version
    java version "15.0.2" 2021-01-19
    Java(TM) SE Runtime Environment (build 15.0.2+7-27)
    Java HotSpot(TM) 64-Bit Server VM (build 15.0.2+7-27, mixed mode, sharing)

When I start Ghidra (even as admin) I get:

    Error: Could not find or load main class LaunchSupport
    Caused by: java.lang.ClassNotFoundException: LaunchSupport
    Error: Could not find or load main class LaunchSupport
    Caused by: java.lang.ClassNotFoundException: LaunchSupport
    Error: Could not find or load main class LaunchSupport
    Caused by: java.lang.ClassNotFoundException: LaunchSupport

Failed to find a supported JDK. Please refer to the Ghidra Installation Guide's Troubleshooting section.

Use a version of java supported by the application. Read the documentation. — Thorbjørn Ravn Andersen, Feb 07 '21 at 11:09
I changed version to: openjdk version "11.0.10" 2021-01-19 OpenJDK Runtime Environment AdoptOpenJDK (build 11.0.10+9) OpenJDK 64-Bit Server VM AdoptOpenJDK (build 11.0.10+9, mixed mode). I still get the same error. Path and JAVA_HOME is also changed. — patpin, Feb 07 '21 at 11:28
probably ghidra_9.2.2_PUBLIC_20201229.zip was downloaded at https://ghidra-sre.org/releaseNotes_9.2.2.html, but not shure. Where can I find it. — patpin, Feb 07 '21 at 12:22

Md Kawser Habib · Answer 1 · 2021-02-07T12:49:43.697

0

Maybe this issue can be solved by updating the lunch.properties file.

First, try to fullfil their minimal requirements. According to ghidra's documentation

Current Ghidra 9.2.2 need Java 11 64-bit Runtime and Development Kit (JDK)
So, it is better to install java 11 64 bit.

If ghidra fails to locate the jdk, then force it by-

To launch with a specific version of Java, set the JAVA_HOME_OVERRIDE property in the support/launch.properties file. If this property is set to an incompatible version of Java, Ghidra will revert to automatically locating a compatible version.

edited Feb 07 '21 at 12:49

answered Feb 07 '21 at 12:33

Md Kawser Habib

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I installed 64 bit jdk-11.0.10 (jdk-11.0.10_windows-x64_bin.exe) and put in environment AND launch.properties unther the ..-overrride: the path C:\Program Files\Java\jdk-11.0.10\ ... Still the same problem. – patpin Feb 07 '21 at 14:29
in cmd-> java -version gives: ...java version "11.0.10" 2021-01-19 LTS Java(TM) SE Runtime Environment 18.9 (build 11.0.10+8-LTS-162) Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.10+8-LTS-162, mixed mode)... – patpin Feb 07 '21 at 14:36
my user environment gives: java version "11.0.10" 2021-01-19 LTS Java(TM) SE Runtime Environment 18.9 (build 11.0.10+8-LTS-162) Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.10+8-LTS-162, mixed mode) – patpin Feb 07 '21 at 14:37
my system variables: PATH: C:\Program Files\Common Files\Oracle\Java\javapath – patpin Feb 07 '21 at 14:39
Did you add bin? Like C:\Program Files\....\jdk-11.0.10\bin . If not then add it. – Md Kawser Habib Feb 07 '21 at 14:44
For user var JAVA_HOME or system var Path or at JAVA-HOME_OVERRIDE in launch.properties? – patpin Feb 07 '21 at 15:18
Is this problem still exist? Then run it at debug mode. Go and run support/ghidraDebug.bat file. Read and locate the log files. If possible send it, it helps to figure out the problem. – Md Kawser Habib Feb 08 '21 at 04:14
Where are the log files located? (And how to view?) – patpin Feb 08 '21 at 22:31
when you run at debugging mode, a cmd prompt will appear. You will find details like log location, jdk version there. – Md Kawser Habib Feb 09 '21 at 11:15
When I run Ghidradebug.bat I receive also the same error message saying: Error: Could not find or load main class LaunchSupport Caused by: java.lang.ClassNotFoundException: LaunchSupport Error: Could not find or load main class LaunchSupport Caused by: java.lang.ClassNotFoundException: LaunchSupport Error: Could not find or load main class LaunchSupport Caused by: java.lang.ClassNotFoundException: LaunchSupport Failed to find a supported JDK. Please refer to the Ghidra Installation Guide's Troubleshooting section. Press any key to continue . . . – patpin Feb 09 '21 at 22:39
my version is: java version "11.0.10" 2021-01-19 LTS Java(TM) SE Runtime Environment 18.9 (build 11.0.10+8-LTS-162) Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.10+8-LTS-162, mixed mode) – patpin Feb 09 '21 at 22:51

score 0 · Answer 2 · answered Apr 18 '21 at 15:23

This may be because you're using the release from github, and these releases are not built and only contain the source code. Source: https://github.com/NationalSecurityAgency/ghidra/issues/2872

To fix the issue, you can try download ghidra from here https://www.ghidra-sre.org/

JDK for Ghidra give me Error: "Could not find or load main class LaunchSupport"

2 Answers2