/* immutable constructors */
public class mainer {
 public static void main(String [] args) {
  doit();
  System.out.println("done.");
  }
 public static inline void doit() {
  MyImmut immut = new MyImmut(12);
  MyImmut immut2 = new MyImmut();
  System.out.println("12:" + immut.A);
  System.out.println("5:" + immut2.A);
  }
 }
immutable class MyImmut {
 int A;
 public inline MyImmut() {
  this(5);
  }
 public inline MyImmut(int A) {
  this.A = A;
  }
 }