Your first mistake is that you have allowed / told the IDE you are using to run an application that has compilation errors in it.
Don't do that!
Uncheck the preference, or whatever. You need to fix the compilation errors before you attempt to run the program.
If you do that, decompiling won't be necessary ... and you won't see the additional confusing "artefacts" that result from doing that.
The actual compilation errors seem to be saying that DirectDelivDetail.this
is not valid. But it looks to be as if it should be. However, it is not clear to me if either the source code or the error messages are real ... or artefacts of decompile / recompile. (Your Question is unclear as to how you got to the point that produced those error messages.) So I think the best thing to do is to show us the original error messages that you got by compiling the original source code ... not stuff that has been reconstructed by a decompiler.