Lambda Expressions java 8 exception : java.lang.NoSuchMethodError: java.lang.invoke.LambdaMetafactory.metaFactory

Question

I have problem with running following code:

    public class LambdaTesting {
        public static void main(String[] args){
             new LambdaTesting();    
        }
        public LambdaTesting(){
            test1();
        }
        private void test1(){
            Runnable x = () -> System.out.println("ok"); //error
        }
    }

which is causing following exception:

*Exception in thread "main" java.lang.IncompatibleClassChangeError 
at java.lang.invoke.MethodHandleNatives.linkMethodHandleConstant(MethodHandleNatives.java:383)
    at LambdaTesting.test1(LambdaTesting.java:24)
    at LambdaTesting.<init>(LambdaTesting.java:20)
    at LambdaTesting.main(LambdaTesting.java:15)
Caused by: java.lang.NoSuchMethodException: no such method: java.lang.invoke.LambdaMetafactory.metaFactory(Lookup,String,MethodType,MethodHandle,MethodHandle,MethodType)CallSite/invokeStatic
    at java.lang.invoke.MemberName.makeAccessException(MemberName.java:765)
    at java.lang.invoke.MemberName$Factory.resolveOrFail(MemberName.java:882)
    at java.lang.invoke.MethodHandles$Lookup.resolveOrFail(MethodHandles.java:1019)
    at java.lang.invoke.MethodHandles$Lookup.linkMethodHandleConstant(MethodHandles.java:1284)
    at java.lang.invoke.MethodHandleNatives.linkMethodHandleConstant(MethodHandleNatives.java:381)
    ... 3 more
Caused by: java.lang.NoSuchMethodError: java.lang.invoke.LambdaMetafactory.metaFactory(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
    at java.lang.invoke.MethodHandleNatives.resolve(Native Method)
    at java.lang.invoke.MemberName$Factory.resolve(MemberName.java:854)
    at java.lang.invoke.MemberName$Factory.resolveOrFail(MemberName.java:879)
    ... 6 more*

I have installed jdk8 downloaded from: http://jdk8.java.net/lambda/ (Windows x64 version)

I run it in Eclipse Version: 4.4.0 downloaded from: http://downloads.efxclipse.org/eclipse-java8/2013-06-30/ (file: org.eclipse.sdk.ide-win32.win32.x86_64.zip 30-Jun-2013 17:35 180M)

eclipse.ini file:

-vm
C:\Program Files\Java\jre8\bin\java.exe
-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20130327-1440.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20130521-0416
-showsplash
org.eclipse.platform
--launcher.defaultAction
openFile
--launcher.appendVmargs
-vmargs
-Xms40m
-Xmx512m

Project properties -> Java Compiler -> Compiler compliance level: 1.8 (BETA) (Use default compliance settings is checked).

Project properties -> Java Build Path -> Libraries: JRE System Library [jre8]

Project Run Configurations:

[JRE tab] Project JRE (jre8) checked

[Classpath tab] Boostrap Entries: JRE System Library [jre8]

I have also tried to run LambdaTesting.class from command line inside jre8/bin directory but same exception appeared.

Java version:

C:\Program Files\Java\jre8\bin>java.exe -version
java version "1.8.0-ea"
Java(TM) SE Runtime Environment (build 1.8.0-ea-b102)

My operating system is: Windows 7 x64

Any clues ?

Thanks to @assylias i solved the problem of compilation from command line using jdk1.8.0/bin/javac.exe, but still no result in Eclipse. Seems that Eclipse has wrong compiler. I tried to change settings in: Preferences -> Java -> Compiler, but i can only choose version 1.7 in "Generated .class files compatibility" (no 1.8 available in this setting). "Use default compliance settings" causing above mentioned exception.

Your program compiles and runs fine for me (b100). Have you tried to compile it with javac from the command line? It seems to be an eclipse configuration issue. — assylias, Aug 12 '13 at 22:09
Eclipse doesn't show any errors, but if I run this code as Java Application it throws an exception. — DominikStyp, Aug 12 '13 at 22:50
@assylias: Thanks, javac solved the problem of compilation, but i still can't compile code properly in Eclipse. Any clues for Eclipse? — DominikStyp, Aug 12 '13 at 23:09
@user2676480 Nop - I've never liked eclipse ;-) You don't seem to be alone having troubles with eclipse+java8: http://stackoverflow.com/questions/17366615/java-8-hashmap-initialization-with-lambda-expressions — assylias, Aug 12 '13 at 23:11
Considering that it is a Beta I would think it more than unfair to make any judgements about eclipse on that baisis — TechTrip, Nov 14 '13 at 16:37

score 0 · Answer 1 · edited May 23 '17 at 12:32

I found that your example compiles fine for the latest beta. Not sure what you are trying to evaluate but I did a similar test as follows:

public class LambdaTesting {
    public static String[] strs = { "a", "aa", "aaa"};

    public static void main(String args[]) throws Exception {
        ExecutorService pool = Executors.newFixedThreadPool(3);
        Set<Future<Integer>> set = new HashSet<Future<Integer>>();
        for (String word : strs) {

            Callable<Integer> c = (() -> word.length());

            Future<Integer> future = pool.submit(c);
            set.add(future);
        }
        int sum = 0;
        for (Future<Integer> future : set) {
            sum += future.get();
        }
        System.out.printf("The sum of lengths is %s%n", sum);
        System.exit(sum);
    }
}

I used an example executor I found here: java Runnable run() method returning a value as my base program and substituted a lambda expression for the wordcount. This all worked fine with the latest Java 8 beta and a September 2013 build of eclipse Kepler as found here: http://downloads.efxclipse.org/eclipse-java8/ - Trip

Lambda Expressions java 8 exception : java.lang.NoSuchMethodError: java.lang.invoke.LambdaMetafactory.metaFactory

1 Answers1