The easiest way to run java class when editing the .java file form VIM

Question

If I'm coding in cpp, in Vim I can do:

!g++ % && ./a.out

to quickly compile and run the code.

However, if I'm coding in Java, in Vim I can do:

!javac %

for a quick compilation, but for running the java class, I cannot do:

!java %

because I need to put the class name only (without the trailing .java suffix)

Is there a quick way in VIM to do what I did when I was coding in Cpp?

Thanks a lot.

Answer 1

Vim has modifiers with which you can manipulate filenames. For your use case, the :r modifier returns the root, i.e. the file name with the last extension removed:

:!java %:r

See the full list at :help filename-modifiers; they also can be combined. Note that for more complex builds, a Java build solution like Ant or Maven is probably more effective; these can also be launched from Vim; even integrated into its :make command.