Dear Gregor, thank you very much for your fast reply.
> True, this is already reported as #890905/#893138. > I ('m trying to) merge those two bugs. Sorry, for reporting again. I noticed that bugs. But as a Java-foreigner it wasn't clear for me if they address the same issue. > You can run > JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/ jabref Something is wrong here. Did openjdk-8 changed a bit? $ JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/ jabref Exception in thread "main" java.lang.NoSuchMethodError: java.nio.ByteBuffer.flip()Ljava/nio/ByteBuffer; at org.apache.logging.log4j.core.appender.OutputStreamManager.flushBuffer(OutputStreamManager.java:292) at org.apache.logging.log4j.core.appender.OutputStreamManager.flush(OutputStreamManager.java:303) at org.apache.logging.log4j.core.appender.OutputStreamManager.closeOutputStream(OutputStreamManager.java:308) at org.apache.logging.log4j.core.appender.OutputStreamManager.releaseSub(OutputStreamManager.java:137) at org.apache.logging.log4j.core.appender.AbstractManager.stop(AbstractManager.java:86) at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.stop(AbstractOutputStreamAppender.java:142) at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.stop(AbstractOutputStreamAppender.java:136) at org.apache.logging.log4j.core.config.AbstractConfiguration.stop(AbstractConfiguration.java:359) at org.apache.logging.log4j.core.AbstractLifeCycle.stop(AbstractLifeCycle.java:136) at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:550) at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:617) at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:634) at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:229) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:153) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45) at org.apache.logging.log4j.LogManager.getContext(LogManager.java:194) at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getContext(AbstractLoggerAdapter.java:122) at org.apache.logging.log4j.jcl.LogAdapter.getContext(LogAdapter.java:39) at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:46) at org.apache.logging.log4j.jcl.LogFactoryImpl.getInstance(LogFactoryImpl.java:40) at org.apache.logging.log4j.jcl.LogFactoryImpl.getInstance(LogFactoryImpl.java:55) at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:655) at net.sf.jabref.JabRefMain.<clinit>(JabRefMain.java:37)
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