java 8 - using lambdas makes JSF to crash -

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i have found unexpected behaviour need solve.

if use lambdas in getter of managed-bean of current view, following error:

javax.el.propertynotfoundexception: target unreachable, identifier 'logbookoperationsbean' resolved null viewid=/logbookoperations.xhtml .... phaseid=process_validations(3) caused by: javax.el.propertynotfoundexception - target unreachable, identifier 'logbookoperationsbean' resolved null @ org.apache.el.parser.astvalue.gettarget(astvalue.java:74)

by using line:

if (collectionutils.isnotempty(changes)) {     changes.stream().foreach((element) -> system.out.println(element)); }

when remove lambda , replace 'old' version:

changes.stream().foreach(new consumer<treenode>() {     @override     public void accept(final treenode element) {         system.out.println(element);     } });

everything works fine.

any ideas why?

i using tomcat 8 , jre1.8.0_71


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