Checks if constructor of class i private and adds line coverage - Java Reflection

Java examples for Reflection:Constructor

  1. HOME
  2. Java
  3. Reflection
  4. Constructor

Description

Checks if constructor of class i private and adds line coverage

Demo Code


//package com.java2s;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Modifier;

public class Main {
    public static void main(String[] argv) throws Exception {
        Class clazz = String.class;
        System.out.println(isPrivate(clazz));
    }/*from  w ww .j  ava2 s  .c  o m*/

    /**
     * Checks if constructor of class i private and adds line coverage
     */
    public static boolean isPrivate(Class<?> clazz)
            throws NoSuchMethodException, SecurityException,
            InstantiationException, IllegalAccessException,
            IllegalArgumentException, InvocationTargetException {
        Constructor<?> constructor = clazz
                .getDeclaredConstructor((Class<?>[]) null);

        // the modifiers int can tell us metadata about the constructor
        int constructorModifiers = constructor.getModifiers();

        // constructor is private so we first have to make it accessible
        constructor.setAccessible(true);

        // now construct an instance
        constructor.newInstance((Object[]) null);

        return Modifier.isPrivate(constructorModifiers);

    }
}

Related Tutorials