gistfile1.txt

arturas@zeus:~/work/traveltime-api/vendor/igeolise-lib$ javap -c Foo.class 
Compiled from "test.scala"
public class Foo implements scala.ScalaObject {
  public int x();
    Code:
       0: aload_0       
       1: getfield      #11                 // Field x:I
       4: ireturn       

  public void x_$eq(int);
    Code:
       0: aload_0       
       1: iload_1       
       2: putfield      #11                 // Field x:I
       5: return        

  public Foo(int);
    Code:
       0: aload_0       
       1: iload_1       
       2: putfield      #11                 // Field x:I
       5: aload_0       
       6: invokespecial #19                 // Method java/lang/Object."<init>":()V
       9: return        
}
arturas@zeus:~/work/traveltime-api/vendor/igeolise-lib$ cat test.scala 
class Foo(var x: Int)