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Ted Dunn
43,783 PointsCannot perform the (int) cast as shown in the video
While following along with the video for Hibernate Basics -> Persisting Data with Hibernate -> Updating and Deleting Entities, I have encountered a problem while attempting to enter the line:
int id = (int) session.save(contact)
which is shown starting at @4:30 in the video.
Chris types this in and everything looks fine, when I typed the exact same line in I received an error message in IntelliJ which reads: 'Incovertible types; cannot cast 'java.io.Serializable' to 'int'.
Any help would be much appreciated.
2 Answers
Alexander Nikiforov
Java Web Development Techdegree Graduate 22,175 PointsThe problem is the following.
Solution
I think you have to change this line in your build.gradle
sourceCompatibility = 1.5
To this line
sourceCompatibility = 1.8
After that you should refresh Gradle and it will Work
Reason
The reason why Chris does not have error and you do is in the way you have created project in intellijdea.
If you read this Stack post
You will see that Intellijdea by default creates separate module per source set.
AND
It also sets sourceCompatibility = 1.5.
This line sourceCompatibility = 1.5 will play Role only when you set
Create Separate Sources per module set
If you do then, IDE will think that you use JAVA 1.5
and Because you use JDK 1.5. Serializable cannot be converted to int
In JDK 1.8 however this can be done.
Why For Chris was Ok and For you not
Because Chris made that video long ago and back then
Create Separate Sources per module set
Was set to false by default. I.e. sourceCompatibility = 1.5 was not read and JDK was 1.8
That is why he did not have problems
PS
If my guess was correct you should also see red squiggly lines under all stream and forEach expresssions.
Ted Dunn
43,783 PointsAlexander, thank you very much for your response. That simple change worked just as you stated.
Have a virtual high-five!