java - eclipse IDE after a brand new install not start but complains

Question

Premise: I am constrained to work on a very old Ubuntu 10.04LTS(aka Lucid Lynx) After have downloaded (now) Oracle's most used 1.8 Java(and latest 1.8 release: 1.8.0_172) decompressed it and set it correctly in PATH in bash i downloaded and decompressed in $ECLIPSE_HOME the latest runnable(cause eclipse releases >= Oxygen require a newer gtk library that actually can't have in that PC) eclipse for my machine: eclipse-java-neon-3-linux-gtk-x86_64.tar.gz When i tried to execute eclipse instead of a running instance i got that error dialog message

JVM terminated. Exit code=1
/usr/bin/java
-Dosgi.requiredJavaVersion=1.8
-XX:+UseG1GC
-XX:+UseStringDeduplication
-Dosgi.requiredJavaVersion=1.8
-Xms256m
-Xmx1024m
-jar /home/harrykar/Java8/eclipseJavaNeon64//plugins/org.eclipse.equinox.launcher_1.3.201.v20161025-1711.jar
-os linux
-ws gtk
-arch x86_64
-showsplash /home/harrykar/Java8/eclipseJavaNeon64//plugins/org.eclipse.platform_4.6.3.v20170301-0400/splash.bmp
-launcher /home/harrykar/Java8/eclipseJavaNeon64/eclipse
-name Eclipse
--launcher.library /home/harrykar/Java8/eclipseJavaNeon64//plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.401.v20161122-1740/eclipse_1618.so
-startup /home/harrykar/Java8/eclipseJavaNeon64//plugins/org.eclipse.equinox.launcher_1.3.201.v20161025-1711.jar
--launcher.appendVmargs
-exitdata 6e8037
-product org.eclipse.epp.package.java.product
-vm /usr/bin/java
-vmargs
-Dosgi.requiredJavaVersion=1.8
-XX:+UseG1GC
-XX:+UseStringDeduplication
-Dosgi.requiredJavaVersion=1.8
-Xms256m
-Xmx1024m
-jar /home/harrykar/Java8/eclipseJavaNeon64//plugins/org.eclipse.equinox.launcher_1.3.201.v20161025-1711.jar 

Anyone has a clue? TIA

Best Regards Harry G.T. Kar

Answer 1

All that time i was focused to search in Web for a solution (but without luck) and not dig into the eclipse.ini file assumed it correct. My eclipse.ini after eclipse installation looked like that:

-startup
plugins/org.eclipse.equinox.launcher_1.3.201.v20161025-1711.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.401.v20161122-1740
-product
org.eclipse.epp.package.java.product
--launcher.defaultAction
openFile
-showsplash
org.eclipse.platform
--launcher.defaultAction
openFile
--launcher.appendVmargs
-vmargs
-Dosgi.requiredJavaVersion=1.8
-XX:+UseG1GC
-XX:+UseStringDeduplication
-Dosgi.requiredJavaVersion=1.8
-Xms256m
-Xmx1024m

I notice here missed the path to java(JDK) actually in use(don't forget i used a custom installation of java - in my home directory - not that provided from the Ubuntu system in /usr/bin/ as the error message correctly reported) So the solution was simply to add 2 lines in the eclipse.ini(i.e. the custom path to JDK).

Beware it's important to write these lines before the -vmargs as shown below (or also delete -vmargs if not use it)

 -vm
/home/harrykar/Java8/jdk1.8.0_172/bin
-vmargs

And that's it eclipse now works as intended

Best Regards

Harry G.T. Kar