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1. Define : Any method/ val/ var inside object( keyword for Singleton) will act like static in java . If you want that object inside any class use companion, else its optional.

Remember the trick is : object i.e. singleton

object Foo{ fun sayFoo() = println("Foo") val bar ="bar" } 

2.Usage :

Foo.sayFoo() println(Foo.bar) 

3.Output :

Foo bar