[1.9] Can we export java 8?

[Ironfists]

I have some lambas expression in my code and some try multi-catch statements and when I do gradlew build to export my mode it fails because some of the stuff I did is not supported in source 1.6. How can I use a latter version of java?

[Choonster]

Add these lines to your build.gradle.

 

Note that ForgeGradle can't reobfuscate lambdas (see this issue), so you need to create wrapper interfaces like this one.

[Ironfists]

So I exported my mod and and I don't understand why it does not work the same between the eclipse version and the real version of minecraft?

 

I mean some things works but for example in my eclipse version I can hurt entities by doing a right click, but it does no damage when running on the real version. I think that has something to do wih server stuff. Do we have to "install server" with the forge installer?

[Choonster]

Did you build it by running the

build

Gradle task?

 

You should create a new thread for this issue and post your code and the FML log.

[LexManos]

CAN you require J8 in your mod? Yes.

SHOULD you? No, Minecraft targets J6, so should you. Simple as that.

[Ironfists]

I deleted my lambdas expressions and

srcCompat = JavaVersion.VERSION_1_8
targetCompat = JavaVersion.VERSION_1_8

and yes I use gradlew build.

I now have an error when I build, the error in the code is

if (amount > 0.0F && (boolean)method.invoke(attackedEntity, source))

which says "incompatible types: Object cannot be converted to boolean

 

I didn't have the problem in eclipse, but I fixed it by putting

srcCompat = JavaVersion.VERSION_1_7
targetCompat = JavaVersion.VERSION_1_7

 

in the build.gradle, it now generate the jar but the mod still act different than the eclipse one. Also I don't know where the FML log are

[Choonster]

Casting an object to a primitive type should compile under Java 7 or 8 (and does for me), I'm not sure why it wasn't working for you.

 

You can find the FML log in <gameDirectory>/logs/fml-client-latest.log. In the development environment, <gameDirectory> is the value of the

minecraft.runDir

variable in build.gradle (defaults to run).

 

Again I suggest creating a new thread for your issue since it's likely not directly related to Java 8.