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.

Why would you want to do this? Just about no useful java programs fit into one class. — bmargulies
– bmargulies, Commented Feb 23, 2013 at 3:02
@bmargulies I want to quickly compile&test my java program.. Usually I made it quite small like to be fitting in 1 file — songyy
– songyy, Commented Feb 23, 2013 at 3:05
Use Eclipse or IntelliJ, not vim, if you want to develop java quickly. — bmargulies
– bmargulies, Commented Feb 23, 2013 at 3:06

Ingo Karkat · Accepted Answer · 2013-02-23 20:42:39Z

8

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.

answered Feb 23, 2013 at 20:42

Ingo Karkat

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