Izpack installler failing on Windows with java.lang.NullPointerException

user_1480018 0
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Updated application to use bundled version of Java 14, was previously using Java 8

Worked okay on Windows dev machine , but on other machine failing on unpacking the data with:

com.izforge.izpack.api.exception.IzPackException: An error occured
in java.lang.Thread.run() at Thread.java:832
in com.izforge.izpack.installer.unpacker.UnpackerBase.run() at UnpackerBase.java:241
in com.izforge.izpack.installer.unpacker.UnpackerBase.unpack() at UnpackerBase.java:319
Caused by: java.lang.NullPointerException: null
in com.izforge.izpack.installer.unpacker.UnpackerBase.unpack() at UnpackerBase.java:299
in com.izforge.izpack.installer.unpacker.UnpackerBase.unpack() at UnpackerBase.java:475
in com.izforge.izpack.installer.unpacker.UnpackerBase.unpack() at UnpackerBase.java:528
in com.izforge.izpack.installer.unpacker.UnpackerBase.unpack() at UnpackerBase.java:627
in com.izforge.izpack.installer.unpacker.UnpackerBase.extract() at UnpackerBase.java:673
in com.izforge.izpack.installer.unpacker.LooseFileUnpacker.unpack() at LooseFileUnpacker.java:92
in java.io.File. () at File.java:362

Can't see why, does it not work reliably with Java 14 ?

izpack java
2 Answers
user_129609130

Does the other machine have java 14 jdk installed? You can check the following folder on windows:

C:\Program Files\Java

if you do have jdk-14 installed, try running inside the command prompt the following:

"C:\Program Files\Java\YourJdkVersion\bin\java" -jar YourCompiledJar.jar

If the app runs correctly using the command above, it's because of the environment variable. In that case, do the following:

Right click My Computer and select Properties. On the Advanced tab, select Environment Variables, and then edit JAVA_HOME to point to where the JDK software is located, for example, C:\Program Files\Java\jdk1.6.0_02. (should be something like jdk-14 in your case)

from docs.oracle.com

user_132961950
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