Markus G. Markus G. - 1 year ago 104
Java Question

IntelliJ Update -> get Error by lambda

I updated my IntelliJ IDEA this morning and after that I openend my project and suddenly i get an error in my lambda expressions.

First i got this one:

Lambda expressions not supported at this language level

and then I tried to change the Project Langugage level and afterwards set it back to default. Now i get this one:

Error:(39, 46) java: lambda expressions are not supported in -source 1.7
(use -source 8 or higher to enable lambda expressions)

IntelliJ ProjectStructure Options:

enter image description here

This is my lambda:
And I say it again before I updated IntellJ it worked:

response.getData().stream().filter(a -> a.getStart_time() > WTStandards.getUnixTime()).forEach(eventList::add);

Answer Source

Go to the Module tab and check Language level of your module there:

enter image description here

Then go to Settings, type javac in the search box and change Java Compiler version as below:

enter image description here

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