Has Declared Constructor : Constructor « Reflection « Java Tutorial

1. Java Tutorial
2. Reflection
3. Constructor

import java.lang.reflect.Constructor;

public class ReflectionUtils {

  public static boolean hasDeclaredConstructor(Class targetClass, Class[] partypes) {
    Constructor constructor = null;
    try {
      constructor = targetClass.getConstructor(partypes);
    }catch (Exception e) {
      e.printStackTrace();
    }
    return constructor != null;
  }
  
}