Call Private constructor : Constructor « Reflection « Java Tutorial

1. Java Tutorial
2. Reflection
3. Constructor

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import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;

class Deny {
  private Deny() {
    System.out.format("Deny constructor%n");
  }
}

public class ConstructorTroubleAccess {
  public static void main(String... args) {
    try {
      Constructor c = Deny.class.getDeclaredConstructor();
      // c.setAccessible(true); // solution
      c.newInstance();

      // production code should handle these exceptions more gracefully
    } catch (InvocationTargetException x) {
      x.printStackTrace();
    } catch (NoSuchMethodException x) {
      x.printStackTrace();
    } catch (InstantiationException x) {
      x.printStackTrace();
    } catch (IllegalAccessException x) {
      x.printStackTrace();
    }
  }
}