Call Private constructor : Constructor « Reflection « Java Tutorial





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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();
    }
  }
}










7.3.Constructor
7.3.1.Get all constructors or by parameters
7.3.2.Demonstrates use of Constructor objects
7.3.3.A program that displays a class synopsis for the named class
7.3.4.Create new instance from Constructor
7.3.5.Modifier.PUBLIC | Modifier.PRIVATE | Modifier.PROTECTED
7.3.6.Load class with Class.forName
7.3.7.Call Private constructor
7.3.8.Get constructor by parameter type
7.3.9.Invoke a constructor which throws Exception
7.3.10.Passing a parameter to the constructor and calling a method dynamically
7.3.11.Getting a Constructor of a Class Object: By obtaining a list of all Constructors object
7.3.12.Getting a Constructor of a Class Object: By obtaining a particular Constructor object.
7.3.13.Get a compatible constructor for the given value type
7.3.14.Has Declared Constructor