Eclipse não iniciará com Ubuntu 18.04

Question

Quando inicio o Eclipse, o log de erros menciona:

SESSION Wed Jun 13 12:41:45 SRET 2018 -----------------------------------------
!ENTRY org.eclipse.equinox.launcher 4 0 2018-06-13 12:41:45.433
!MESSAGE Exception launching the Eclipse Platform:
!STACK
java.lang.ClassNotFoundException: org.eclipse.core.runtime.adaptor.EclipseStarter
    at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:466)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:566)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:626)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1414)

Eu tentei as respostas dissoPergunta StackOverflowe verifiquei todos os arquivos jar, mas ainda sem sorte. Por favor, avise.