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Wed, 18 April 2018 11:57

Magnus Magnussson

Messages: 1
Registered: April 2018

Junior Member

Hi All!

Im trying to add the RXJava (io.reactivex.Observable) librarie into Eclipse but with no success.
First i added a file called rxjava-2.1.12.jar then i added the rxjava-2.1.12.zip.
Eclipse seems to accept those files.
I can browse them and it seems to be the right librarie
No error until i run the program.

import java.io.IOException;
import io.reactivex.Observable;
public class Start {
public static void main(String[] args) {
System.out.println("Hej");
Observable.fromArray(0,1,2,3,4,5).subscribe( (t) ->
System.out.println(t ) );
try {
System.in.read();
}catch (IOException e) {
e.printStackTrace();
}
}
}

This error pops up:
Exception in thread "main" java.lang.NoClassDefFoundError: org/reactivestreams/Publisher
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at Start.main(Start.java:13)
Caused by: java.lang.ClassNotFoundException: org.reactivestreams.Publisher
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 13 more

I have googled this and 1 suggestion is to alter text in a gradle file.
Its shouldnt be that complicated.
Seems like the editor is satisfied but the runtime isnt.

Please help me.

//Magnus

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Re: Register rxJava in Eclipse [message #1785722 is a reply to message #1785691]

Wed, 18 April 2018 22:22

Nitin Dahyabhai

Messages: 4435
Registered: July 2009

Senior Member

Are you actually using Gradle? If so, do you have Buildship installed and enabled on the project? If not, exactly what do you mean by "add" when it comes to the library?

_
Nitin Dahyabhai
Eclipse Web Tools Platform

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