(now works in java>8) CXF only works on Java 8 !!! Solving the problem partially.

NOTE: apache-cxf version 3.3.6 solves the problem of java version>8

We cannot create WS Client scaffolding with JDK 9. Maybe in a near future it will be possible. So I have decided to use JDK 8

1. Selecting JDK 8


I have installed both JDK 8 and 9. For now, I use JDK 9, so let's use JDK 8. So let's follow Kapil Bradashar's instructions,.

Let's verify we have both versions of JDK.


/usr/lib/jvm/java-1.8.0-openjdk-amd64
/usr/lib/jvm/java-1.9.0-openjdk-amd64

Now let's switch to JDK 8


sudo update-alternatives --config java

And we have the following answer


There are 2 choices for the alternative java (providing /usr/bin/java).

  Selection    Path                                            Priority   Status
----------------------------------------------------------------------------------------
  0            /usr/lib/jvm/java-9-oracle/bin/java              1091      mode automàtic
  1            /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java   1081      mode manual
  2            /usr/lib/jvm/java-9-openjdk-amd64/bin/java       1091      mode manual
* 3            /usr/lib/jvm/java-9-oracle/bin/java              1091      mode manual

Press enter to keep the current choice[*], or type selection number:

AS we can see, by default we are using Oracle JDK 9

Let's type option 1 to select JDK 8 as our choice

2. Getting JDK version 8 in the PATH


Following the instructions of muet , we need to add this code to the ~/.bashrc file :

 

export JAVA_HOME="$(jrunscript -e 'java.lang.System.out.println(java.lang.System.getProperty("java.home"));')"

If we type java -version we get the desired version


openjdk version "1.8.0_162"
OpenJDK Runtime Environment (build 1.8.0_162-8u162-b12-0ubuntu0.16.04.2-b12)
OpenJDK 64-Bit Server VM (build 25.162-b12, mixed mode)

But this system may fail, so edit your  ~/.bashrc file, and comment the previous line (export JAVA_HOME="$(jrunscript -e ....) and add this code:


#export JAVA_HOME="$(jrunscript -e 'java.lang.System.out.println(java.lang.System.getProperty("java.home"));')"
JAVA_HOME=/usr/lib/jvm/java-9-oracle/
export JAVA_HOME
PATH=$JAVA_HOME:$JAVA_HOME/bin:$PATH
export PATH


Now let's try to create the WS scaffolding with Apache CXF as indicated in the previous post.

If we want to use this generated scaffolding with a JDK 9 project, it is interesting to see this post. You can see how to generate an executable project with maven using WS Client.






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