class ZFirstClass {
  ZFirstClass();
line 1:       0: aload_0
line 1:       1: invokespecial #1                  // Method java/lang/Object."<init>":()V
line 1:       4: return


  static int square(int);
line 3:       0: iload_0
line 3:       1: iload_0
line 3:       2: imul
line 3:       3: ireturn

}


class ASecondClass {
  ASecondClass();
line 7:       0: aload_0
line 7:       1: invokespecial #1                  // Method java/lang/Object."<init>":()V
line 7:       4: return


  static int square(int);
line 9:       0: iload_0
line 9:       1: iload_0
line 9:       2: imul
line 9:       3: ireturn

}