Missing tools.jar when launching STS application

Question

I have the latest STS4. I am using installed java-1.8 JDK not embedded as the execution environment. My project just runs fine without any issue.

Ho

Answer 1

Copy JDK directory to your STS installation or extraction library and and rename JDK to jre. the directory structure of STS should look like this

.eclipseproduct
artifacts.xml
configuration
dropins
eclipsec.exe
features
jre
license.txt
META-INF
open-source-licenses.txt
p2
plugins
readme
SpringToolSuite4.exe
SpringToolSuite4.ini

Answer 2

I had the same issue when i upgraded to Java 11.

I simply edited SpringToolSuite4.ini and added

-vm C:\Program Files\Java\jdk-11.0.4\bin\javaw.exe

Answer 3

The fix is in the -vm parameter. the order and the absolute path of the javaw.exe seems to be the issue.

the readme file mentions _ "To run Eclipse with an alternate Java runtime environment, the path to the Java virtual machine's binary must be identified. With an Eclipse installation from the distribution, altering the $PATH variable to include the path to the alternate Java runtime environment is often not enough as the Eclipse that Linux distributions package often performs a scan internally to pick up GCJ by itself whilst ignoring what's on the $PATH."

So I have edited now the SpringToolSuite4.ini and made this entry

  -vm
 C:\UserTemp\Softwares\java\jdk\oracle-jdk-1.8-64bit\bin\javaw.exe

Restarted my STS and it works perfect.

The reference to set the JVM Specifying the JVM was very useful in understanding this.

Answer 4

Don't spend too much time looking for tools.jar. If you get an error like that, don't be upset.

If you already have java JDK1.8, go to its lib folder, tools.jar should be available there. Copy and paste the same in JRE1.8 lib folder.

Answer 5

SOLUTION :

Check your Path JAVA_HOME - system property "Environment Variables"

for example: JAVA_HOME:

C:\Program Files\Java\jdk-12.0.1\lib

usually you only need add \lib at JAVA_HOME

Answer 6

In my case I had installed jre, and not jdk!

Observe that you have jdk installed!