The resulting pom.xml and App.java are exactly the same as with my prior post, which is the way it is supposed to be!
https://gist.github.com/schwehr/b433076cab0cdb99c61163c6fb56bf7f
Getting setup with JAVA_HOME is where I hit some speed bumps. But they turned out not to be too bad. So I know this is where I want to end up pointing my JAVA_HOME:
/Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home
But first, I wanted to see what else is around. Here is my default path:
type javac
javac is /usr/bin/javac
javac --version
javac 9
java --version
java 9
Java(TM) SE Runtime Environment (build 9+181)
Java HotSpot(TM) 64-Bit Server VM (build 9+181, mixed mode)
I wanted to see if I could use the default /usr/bin stuff. Before I try that, I need to install maven. I use fink, but I bet brew and macports have it too.
fink install maven
mvn --version
Error: JAVA_HOME is not defined correctly.
We cannot execute /usr/libexec/java_home/bin/java
Uh oh! Time to see what /usr has.
ls -ld /usr/libexec/java_home
lrwxr-xr-x 1 root wheel 79 Jan 31 14:36 /usr/libexec/java_home -> /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java_home
find /System/Library/Frameworks/JavaVM.framework/Versions -name javac
/System/Library/Frameworks/JavaVM.framework/Versions/A/Commands/javac
That doesn't look like the correct structure, so I'm going to avoid that and go with what I originally thought would work:
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home
mvn --version
Apache Maven 3.2.3 (33f8c3e1027c3ddde99d3cdebad2656a31e8fdf4; 2014-08-11T13:58:10-07:00)
Maven home: /sw/share/maven
Java version: 9, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "10.13.6", arch: "x86_64", family: "mac"
So now it looks like I've got maven and a probably working Java env. Time to start building the app. Start by creating a space to work on it and create the initial project:
cd && mkdir maven && cd maven
mvn --batch-mode archetype:generate -DgroupId=com.example -DartifactId=geotools-hello -DarchetypeGroupId=org.apache.maven.archetypes
Now checkout what's in the default setup:
cd geotools-hello/
tree -d
find . -type f
./pom.xml
./src/test/java/com/example/AppTest.java
./src/main/java/com/example/App.java
Can I build anything with it?
mvn compile
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] Source option 1.5 is no longer supported. Use 1.6 or later.
[ERROR] Target option 1.5 is no longer supported. Use 1.6 or later.
[INFO] 2 errors
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
Nope! This is the same issue I had on Linux. Time to start editing the pom.xml file. Add this:
<properties>
<maven.compiler.source>1.9</maven.compiler.source>
<maven.compiler.target>1.9</maven.compiler.target>
</properties>
Now is is actually able to build and run the application! I added a line to print out the Java version. On the Mac, I'm seeing "9", while on Linux I was seeing 9.0.4.
mvn compile exec:java -Dexec.mainClass="com.example.App"
[INFO] Scanning for projects...
Downloading: https://repo.maven.apache.org/maven2/org/codehaus/mojo/exec-maven-plugin/maven-metadata.xml
[SNIP]
Downloaded: https://repo.maven.apache.org/maven2/org/codehaus/mojo/exec-maven-plugin/1.6.0/exec-maven-plugin-1.6.0.jar (57 KB at 434.0 KB/sec)
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building geotools-hello 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ geotools-hello ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /Users/schwehr/maven/geotools-hello/src/main/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ geotools-hello ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 1 source file to /Users/schwehr/maven/geotools-hello/target/classes
[INFO]
[INFO] --- exec-maven-plugin:1.6.0:java (default-cli) @ geotools-hello ---
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/reporting/maven-reporting-api/2.2.1/maven-reporting-api-2.2.1.pom
Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/reporting/maven-reporting-api/2.2.1/maven-reporting-api-2.2.1.pom (2 KB at 15.1 KB/sec)
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/reporting/maven-reporting/2.2.1/maven-reporting-2.2.1.pom
[SNIP]
Downloaded: https://repo.maven.apache.org/maven2/commons-cli/commons-cli/1.2/commons-cli-1.2.jar (41 KB at 161.3 KB/sec)
Downloaded: https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-utils/3.0.20/plexus-utils-3.0.20.jar (238 KB at 730.6 KB/sec)
Hello World!
9
Now I change App.java to include. It works!
mvn compile exec:java -Dexec.mainClass="com.example.App"
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building geotools-hello 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ geotools-hello ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /Users/schwehr/maven/geotools-hello/src/main/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ geotools-hello ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 1 source file to /Users/schwehr/maven/geotools-hello/target/classes
[INFO]
[INFO] --- exec-maven-plugin:1.6.0:java (default-cli) @ geotools-hello ---
Hello World!
9
GeoTools version 20-SNAPSHOT (built from rc52833cadf758699a1969d258ab6172b305f9416)
Java version: 9
Operating system: Mac OS X 10.13.6
GeoTools jars on classpath:
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