Hi André, my understanding is that Wonder7 requires Java 8 (1.8). As you try to compile with Java 7 things don't work. You can of course set the compiler compliancy to Java 7 for your classes, but nevertheless your code requires a Java 8 runtime because the Wonder frameworks need this.
Hope this helps ---markus--- > On 21 Feb 2020, at 00:46, André Rothe via Webobjects-dev > <webobjects-dev@lists.apple.com> wrote: > > Hi, > > I run into a build problem on a WebObjects application. As I have to realize, > I don't understand the build procedures within Eclipse/WOLips. > > > -------------- > Eclipse 4.6.3 started within OpenJDK 1.8.0_212-b4. > > My WebObjects project should be compiled with an OpenJDK 1.7.0, so I have set > the JRE System Library for the project to that JDK (parallel installation on > the workstation, set also as installed JRE within Eclipse). > > The Java Compiler settings for the project is set to "Compiler compliance > level 1.7". > > If I start now the "build" target on the build.xml of the project, I get an > error: > > build.xml:203 taskdef A class needed by class > org.objectstyle.woproject.ant.WOCompile cannot be found: > org/apache/tools/ant/taskdefs/Javac > -------------- > > If I set the JRE System Library of the project to the OpenJDK 1.8.0_212-b4, > which executes the Eclipse, and set the Compiler compliance level to 1.7 too, > the build process will work again. > > The major class version of the classes within the /bin directory (build path > of the project) is 51 (1.7). The class version of the /build directory > (WOLips build path?) is 51 too and the class version of the unzipped JAR > files within the /dist folder is 51 too. > > > As Ant installation I use the version 1.9.6 inside the Eclipse installation. > On the Ant runtime settings dialog I have set > > ant.build.javac.source 1.7 > ant.build.javac.target 1.7 > compiler.source 1.7 > compiler.target 1.7 > > The Ant classpath contains tools.jar from the OpenJDK 1.8.0_212-b4 and the > woproject.jar from the WOLips plugin. The Ant process will also be executed > by JDK 1.8, but generates target files for 1.7. But how interacts this with > the project JRE System Library? > ------------------ > > If I change the tools.jar to JDK 1.7, the same error occurs like above. The > Ant build is configured as External Tool Config, so I can change the JRE > there to JDK 1.7. But now I get the following error: > > UnsupportedClassVersionError: org/objectstyle/woproject/ant/WOCompile: > Unsupported major.minor version 52.0 > > This seems to be a problem from the Eclipse installation, it needs JDK 1.8 to > run, and the WOCompile.class within the plugins folder has also a major > version 52, so it needs JDK 1.8. > ------------------ > > The last thing is the context menu item "WOLips Ant Tools->Install". It > doesn't work at all, it returns also > > UnsupportedClassVersionError: org/objectstyle/woproject/ant/WOCompile: > Unsupported major.minor version 52.0 > > Here executes an older JDK the Ant process, which is visible on the Console > output (java-1.7.0/bin/java), but why? > ------------------ > > How interact these things together, how I have to set the JDK versions? > > Thanks a lot > André > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/webobjects-dev/mailinglists%40kataputt.com > > This email sent to mailingli...@kataputt.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
