JavaExercises/Java 3/HW71Lesson.java at master · biblelamp/JavaExercises · GitHub

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/**

* Java. Level 3. Lesson 7. Homework

* 1. Create a method-researcher. At the input of the class name,

* the method outputs to the console all the information about the class

* that can be obtained using Reflection

* @author Sergey Iryupin

* @version Mar 09, 2018

* @link https://github.com/biblelamp

import java.lang.reflect.Field;

import java.lang.reflect.Constructor;

import java.lang.reflect.Method;

public class HW71Lesson {

public static void main(String[] args) {

HW71Lesson hw = new HW71Lesson();

hw.getClassInformation(

(args.length == 0)? "java.lang.String" : args[0]);

}

void getClassInformation(String className) {

Class classObj;

try {

classObj = Class.forName(className);

} catch (ClassNotFoundException ex) {

ex.printStackTrace();

return;

}

// get full and short names

System.out.println("Full name: " + classObj.getName());

System.out.println("Short name: " + classObj.getSimpleName());

// get full and short names of superclass

System.out.println("Parent full name: " +

classObj.getSuperclass().getName());

System.out.println("Parent short name: " +

classObj.getSuperclass().getSimpleName());

// get public fields of class

System.out.println("\nPublic fields:");

for (Field field : classObj.getFields())

System.out.println(

field.getType().getName() + " " + field.getName());

// get public constructors

System.out.println("\nPublic constructors:");

for (Constructor constructor : classObj.getConstructors())

System.out.println(constructor);

// get public methods

System.out.println("\nPublic methods:");

for (Method method : classObj.getMethods())

System.out.println(method);

}

JavaExercises/Java 3/HW71Lesson.java at master · biblelamp/JavaExercises · GitHub

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