3) Mark to win @ mark Java community: then restart eclipse and report an error: “failed to load the JNI shared library”

this is because the scala eclipse ide just downloaded is 64 bit, while our Java home used to set a 32-bit JDK. Download a 64 bit JDK and change it

32-bit Java home: C: \ progra ~ 2 \ Java \ jdk1.8.0_ 144
64 bit Java home: C: \ progra ~ 1 \ Java \ jdk1.8.0_ 131

(note that my Hadoop can only be started on the 32-bit JDK, so start Hadoop with the 32-bit JDK first, and then start eclipse for Scala with the 64 bit JDK, which can be used as Java or Scala.)

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