Perform continuous integration with multiple versions of Java

[emxsys]

Consider modifying the .travis.yml to test the WorldWindJava build with multiple versions of Java, for instance:

• openjdk8
• oraclejdk8
• oraclejdk9
• oraclejdk11

See: https://docs.travis-ci.com/user/languages/java/#testing-against-multiple-jdks

[emxsys]

In progress in the enhance/travis branch

[emxsys]

Gleaned from Building Java 11+ projects on Travis CI guide:

JDK’s are downloaded from jdk.java.net. You can use oraclejdkN or openjdkN where N is the JDK version number, e.g. oraclejdk10 or openjdk8. You can also run tests against the latest early access builds using oraclejdk-ea and openjdk-ea. The JDK’s are downloaded by the install-jdk.sh script.

The full list of available JDKs is:

• oraclejdk7
• oraclejdk8
• oraclejdk9
• oraclejdk10
• oraclejdk11
• openjdk7
• openjdk8
• openjdk9
• openjdk10
• openjdk11
• openjdk-ea

Testing against this many JDK’s is probably wasteful of Travis CI’s resources. For most projects there are no differences between Oracle’s JDK and OpenJDK. We would recommend picking either Oracle’s JDK or OpenJDK to run tests against all of the versions. With the other JDK you probably only need to test the current long term support release, feature release, and early access release.

See the aforementioned guide for more information about certificates and failures.

[emxsys]

@wcmatthysen FYI:

• I added a test build with an early access OpenJDK (configured with failures allowed), and it did fail. See: https://travis-ci.com/WorldWindEarth/WorldWindJava/builds/108347677
• Next steps: With multiple JDKs, I need to ensure the deploy actions only occur with just one JDK.

[wcmatthysen]

@emxsys, looks great. From what I can see in the logs, it looks like a JOGL linking issue is causing the openjdk-ea build to fail:

[junit] Testsuite: gov.nasa.worldwind.util.OGLUtilTest
[junit] Tests run: 11, Failures: 0, Errors: 11, Skipped: 0, Time elapsed: 0.157 sec
[junit] 
[junit] Testcase: testPngFile(gov.nasa.worldwind.util.OGLUtilTest):	Caused an ERROR
[junit] /tmp/jogamp_0000/file_cache/jln6310997194525872984/jln6167345031823347284/natives/linux-amd64/libnativewindow_awt.so: /home/travis/openjdk-ea/lib/libjawt.so: version `SUNWprivate_1.1' not found (required by /tmp/jogamp_0000/file_cache/jln6310997194525872984/jln6167345031823347284/natives/linux-amd64/libnativewindow_awt.so)
[junit] java.lang.UnsatisfiedLinkError: /tmp/jogamp_0000/file_cache/jln6310997194525872984/jln6167345031823347284/natives/linux-amd64/libnativewindow_awt.so: /home/travis/openjdk-ea/lib/libjawt.so: version `SUNWprivate_1.1' not found (required by /tmp/jogamp_0000/file_cache/jln6310997194525872984/jln6167345031823347284/natives/linux-amd64/libnativewindow_awt.so)
[junit] 	at java.base/java.lang.ClassLoader$NativeLibrary.load0(Native Method)
[junit] 	at java.base/java.lang.ClassLoader$NativeLibrary.load(ClassLoader.java:2430)
[junit] 	at java.base/java.lang.ClassLoader$NativeLibrary.loadLibrary(ClassLoader.java:2487)
[junit] 	at java.base/java.lang.ClassLoader.loadLibrary0(ClassLoader.java:2684)
[junit] 	at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2617)
[junit] 	at java.base/java.lang.Runtime.load0(Runtime.java:765)
[junit] 	at java.base/java.lang.System.load(System.java:1866)
[junit] 	at com.jogamp.common.jvm.JNILibLoaderBase.loadLibraryInternal(JNILibLoaderBase.java:603)
[junit] 	at com.jogamp.common.jvm.JNILibLoaderBase.access$000(JNILibLoaderBase.java:63)
[junit] 	at com.jogamp.common.jvm.JNILibLoaderBase$DefaultAction.loadLibrary(JNILibLoaderBase.java:106)
[junit] 	at com.jogamp.common.jvm.JNILibLoaderBase.loadLibrary(JNILibLoaderBase.java:487)
[junit] 	at jogamp.nativewindow.NWJNILibLoader.access$000(NWJNILibLoader.java:39)
[junit] 	at jogamp.nativewindow.NWJNILibLoader$1.run(NWJNILibLoader.java:49)
[junit] 	at jogamp.nativewindow.NWJNILibLoader$1.run(NWJNILibLoader.java:41)
[junit] 	at java.base/java.security.AccessController.doPrivileged(AccessController.java:312)
[junit] 	at jogamp.nativewindow.NWJNILibLoader.loadNativeWindow(NWJNILibLoader.java:41)
[junit] 	at jogamp.nativewindow.jawt.JAWTUtil.<clinit>(JAWTUtil.java:336)
[junit] 	at java.base/java.lang.Class.forName0(Native Method)
[junit] 	at java.base/java.lang.Class.forName(Class.java:417)
[junit] 	at com.jogamp.nativewindow.NativeWindowFactory$3.run(NativeWindowFactory.java:344)
[junit] 	at com.jogamp.nativewindow.NativeWindowFactory$3.run(NativeWindowFactory.java:340)
[junit] 	at java.base/java.security.AccessController.doPrivileged(AccessController.java:312)
[junit] 	at com.jogamp.nativewindow.NativeWindowFactory.initSingleton(NativeWindowFactory.java:340)
[junit] 	at com.jogamp.opengl.GLProfile.initProfilesForDefaultDevices(GLProfile.java:1721)
[junit] 	at com.jogamp.opengl.GLProfile.access$000(GLProfile.java:80)
[junit] 	at com.jogamp.opengl.GLProfile$1.run(GLProfile.java:230)
[junit] 	at java.base/java.security.AccessController.doPrivileged(AccessController.java:312)
[junit] 	at com.jogamp.opengl.GLProfile.initSingleton(GLProfile.java:216)
[junit] 	at com.jogamp.opengl.GLProfile.getProfileMap(GLProfile.java:2297)
[junit] 	at com.jogamp.opengl.GLProfile.get(GLProfile.java:1021)
[junit] 	at com.jogamp.opengl.GLProfile.get(GLProfile.java:1050)
[junit] 	at com.jogamp.opengl.GLProfile.getMaxFixedFunc(GLProfile.java:803)
[junit] 	at gov.nasa.worldwind.Configuration.getMaxCompatibleGLProfile(Configuration.java:662)
[junit] 	at gov.nasa.worldwind.util.OGLUtilTest.setUp(OGLUtilTest.java:34)
[junit] 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[junit] 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[junit] 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[junit] 
[junit] 
[junit] Testcase: testPngStream(gov.nasa.worldwind.util.OGLUtilTest):	Caused an ERROR
[junit] No default device available
[junit] com.jogamp.opengl.GLException: No default device available
[junit] 	at com.jogamp.opengl.GLProfile.getProfileMap(GLProfile.java:2300)
[junit] 	at com.jogamp.opengl.GLProfile.get(GLProfile.java:1021)
[junit] 	at com.jogamp.opengl.GLProfile.get(GLProfile.java:1050)
[junit] 	at com.jogamp.opengl.GLProfile.getMaxFixedFunc(GLProfile.java:803)
[junit] 	at gov.nasa.worldwind.Configuration.getMaxCompatibleGLProfile(Configuration.java:662)
[junit] 	at gov.nasa.worldwind.util.OGLUtilTest.setUp(OGLUtilTest.java:34)
[junit] 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[junit] 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[junit] 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)