package reflection;

import java.lang.reflect.Constructor;

import java.lang.reflect.Field;

import java.lang.reflect.Method;

public class ClassViewer {

public static void showClassInfo(String classAbsName) {

try {

Class<?> clazz = Class.forName(classAbsName);

System.out.println("class name: " + clazz.getCanonicalName());

Constructor<?>[] constructors = clazz.getConstructors();

System.out.println("class constructors:");

for (Constructor<?> constructor : constructors) {

System.out.println("\t" + constructor);

}

Field[] fields = clazz.getDeclaredFields();

System.out.println("class declared fields:");

for (Field field : fields) {

System.out.println("\t" + field);

}

Method[] methods = clazz.getDeclaredMethods();

System.out.println("class declared methods:");

for (Method method : methods) {

System.out.println("\t" + method);

}

} catch (ClassNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

public static void main(String[] args) {

ClassViewer.showClassInfo("java.util.ArrayList");

}

}