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javajshell

How to define an empty list of string in jshell in a shortest possible way?

I want to create an empty list of type List<String> in jshell

I am hoping jshell supports some sort of syntax shorthand for example: 

  List<String> args = []

However it failed with this error message: 

|  Error:
|  illegal start of expression
|  List<String> args = [];
|                      ^

Of course I can just use the standard java expression:

import com.google.common.collect.ImmutableList
List<String> args = ImmutableList.of()

but I want to know if it can be more terse.

Solution

  • If you're initialising a List you can do it as:

    List<String> list = List.of();

    If instead it was an array, you could have initialized it as :

    String[] arr = {}