Such an environment already exists, and the JEP rejects it as an option: > Evolving a batch of working declarations in JShell into a real Java program leads to

Such an environment already exists, and the JEP rejects it as an option: > Evolving a batch of working declarations in JShell into a real Java program leads to a non-idiomatic style of code because it declares each method, class, and variable as static... it is not the on-ramp programming model we are looking for.