scala - objects of same class have different methods signature -

scala - objects of same class have different methods signature -

look @ next snippet:

class c val c1 = new c { def m1 = "c1 has m1" } val c2 = new c { def m2 = "c2 has m2" } c1.m1 c2.m2 //c2.m1 //c1.m2

run in repl, know mean.

my limited java knowledge tells me in java, objects of same class have same methods signagure, , far oo concerned, there no much difference between java , scala under hood. (correct me, if i'm wrong), i'm surprised see snippet sound scala code.

so why?

you're extending c traits, c1 , c2 anonymous classes :

scala> c1.getclass res0: java.lang.class[_ <: c] = class $anon$1 scala> c2.getclass res1: java.lang.class[_ <: c] = class $anon$2

looking @ java code, you'll see (o beingness surrounding object compile) :

public final class o$$anon$1 extends o$c { public java.lang.string m1(); public o$$anon$1(); } public final class o$$anon$2 extends o$c { public java.lang.string m2(); public o$$anon$2(); }

scala