Are Scala "object" variables not visible from java? [duplicate]

Question

Possible Duplicate:
Accessing scala object fields from java

I have this scala object

object Foo {
  val TOTAL = 10
  def totalMethod = 10
}

When I do this on java code:

System.out.println(Foo.totalMethod());

it works, but when I do

System.out.println(Foo.TOTAL);

It doesn't:

    [error] /Users/pfernand/Projects/foo/Whatever.java:23: cannot find symbol
    [error] symbol  : variable TOTAL
    [error] location: class Foo
    [error]         System.out.println(Foo.TOTAL);
    [error]

It's a duplicate indeed. Sorry, but I couldn't find the answer by googling :( — Pablo Fernandez
– Pablo Fernandez, Commented Aug 9, 2012 at 16:38

halex · Accepted Answer · 2012-08-09 16:27:27Z

4

The Scala compiler generates a parameterless method with the name of the field. You can use

System.out.println(Foo.TOTAL());

answered Aug 9, 2012 at 16:27

halex

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dhg · Accepted Answer · 2012-08-09 16:26:40Z

2

Try

System.out.println(Foo.TOTAL());

Scala makes fields private and provides a "getter" method (using the same name) for access.

answered Aug 9, 2012 at 16:26

dhg

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Luigi Plinge · Accepted Answer · 2012-08-09 16:26:57Z

1

The above will create a getter, which you should be able to access with Foo.TOTAL(). There's no way to access the field directly from Java, AFAIK.

answered Aug 9, 2012 at 16:26

Luigi Plinge

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1 Comment

sourcedelica Over a year ago

That's right, the field is private.

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