Puzzle 55 – Solution

The solution to last time puzzle was to use an instance initializer. An instance initalizer is a piece of code similar to a static block that gets called whenever an instance is created (the compiler inlines this code at the beginning of each constructor).

package com.twisters;
public class NoConstructor {
  
   boolean isConstructor = false;    //No changes permitted to this line
    {isConstructor = true;}

   /* No Code may be added or changed in main*/
   public static void main(String[] args) {
       NoConstructor noConstructor = new NoConstructor();
       System.out.println(noConstructor.isConstructor);    //Prints true
    }
}