Internationalization of Messages in play 2.6

[nehapatkar14]

Hello , I am migrating from play 2.3 to 2.6 and getting many errors related to
For example this is the code in my Application controller

public Result instruments(String filter) {
    try {
        return ok(instruments.render(InstrumentController.getInstrumentData(session("username"),
            session("primaryLabID"), getConnectionName()), filter, new ErrorInfo()));
    }
    catch (ControllerException e) {
        logger.error(e.getMessage(), e);
        return internalServerError(instruments.render(new InstrumentData(), filter, new ErrorInfo(e)));
    }
}

And my instruments.scala.html contains

@(instrumentData: InstrumentData, filter: String, errorInfo: ErrorInfo, messages: Messages)

After changing my controller to following and keeping the instruments.scala as it is I am getting a new error .

@Security.Authenticated(Secured.class)
public Result instruments(String filter) {
    try {
        /**Messages message = Http.Context.current().messages();**/
        return ok(instruments.render(InstrumentController.getInstrumentData(session("username"),
            session("primaryLabID"), getConnectionName()), filter, new ErrorInfo(),/**message**/));
    }
    catch (ControllerException e) {
        logger.error(e.getMessage(), e);
        return internalServerError(instruments.render(new InstrumentData(), filter, new ErrorInfo(e)));
    }
}

Error:incompatible types: play.i18n.Messages cannot be converted to play.api.i18n.Messages
[ERROR]                     session("primaryLabID"), getConnectionName()), filter, new ErrorInfo(),message));

In controller I am using the package : play.i18n.Messages
Which message parameter do I pass from my controller ?
Can someone help me with this migration ?

[tsuyoshizawa]

You need to use MessageApi from 2.6.x.

The static deprecated methods in play.i18n.Messages have been removed in 2.6.x, as there are equivalent methods on the MessagesApi instance.

https://www.playframework.com/documentation/2.8.x/MessagesMigration26

Here is a sample of how to use MessageApi in Java

https://github.com/playframework/play-samples/blob/2.8.x/play-java-fileupload-example/app/controllers/HomeController.java#L22

[jducoeur]

More generally, 2.3 to 2.6 is a big jump, reflecting many years of evolution of Play. In the middle of that is the huge philosophical shift from globals and statics to doing everything with dependency injection. I'd recommend doing that upgrade one major version at a time, and dealing with all the deprecations at each step before proceeding to the next.