Key tool is not recognized

1

I followed the NSB video tutorial on how to generate a key.
All went well to this point . . .

Microsoft Windows [Version 10.0.18362.778]
© 2019 Microsoft Corporation. All rights reserved.

C:\Users\David> cd C:\Program Files (x86)\Java\jre1.8.0_251

C:\Program Files (x86)\Java\jre1.8.0_251>keytool -genkey -v -keystore PedCalc.keystore -alias PedCalc -keyalg RSA -keysize 2048 -validity 10000
‘keytool’ is not recognized as an internal or external command,
operable program or batch file.

There seems to be some disagreement on fixes I am finding. They have to do with the way JAVA_HOME is set up in Environmental Settings. Some say it needs to be ‘…\bin’
Some say both jre and jdk need to be there.
What is the definitive solution?

2

Rather than messing with links, you can try entering the full path. Something like this:

"C:\Program Files\Java\jdk1.8.0_241\bin\keytool.exe" ...

The “jdk1.8.0_241” will change based on the version of Java you have installed.

3

Found the problem. I was using a Sample Program of Java jdk. I downloaded the real one then I got most of the way through the keystore setup and on my final ‘Enter’ I got this error message: (I was soooo close)

    (RETURN if same as keystore password):

[Storing PedCalc.keystore]
keytool error: java.io.FileNotFoundException: PedCalc.keystore (Access is denied)
java.io.FileNotFoundException: PedCalc.keystore (Access is denied)
at java.io.FileOutputStream.open0(Native Method)
at java.io.FileOutputStream.open(FileOutputStream.java:270)
at java.io.FileOutputStream.(FileOutputStream.java:213)
at java.io.FileOutputStream.(FileOutputStream.java:101)
at sun.security.tools.keytool.Main.doCommands(Main.java:1196)
at sun.security.tools.keytool.Main.run(Main.java:368)
at sun.security.tools.keytool.Main.main(Main.java:361)

C:\Program Files (x86)\Java\jdk1.8.0_251\bin>

4

…needed to run as administrator. Problem solved.