利用反射机制查看ArrayList类的信息

public class OutString {


public static void main(String[] args) throws ClassNotFoundException {
Class<?> clazz = Class.forName("java.util.ArrayList");//获取ArrayList的类对象
System.out.println("累的标准名称为："+clazz.getCanonicalName());
System.out.println("累的修饰符为："+Modifier.toString(clazz.getModifiers()));
TypeVariable<?>[] typeVariables = clazz.getTypeParameters();
System.out.println("类的泛型参数为：");
if(typeVariables.length>0){
for(TypeVariable<?> typeVariable:typeVariables){
System.out.println(typeVariable+"\t");
}
}
Type[] interfaces = clazz.getGenericInterfaces();
System.out.println("类的所有接口为：");
if(interfaces.length>0){
for(Type type:interfaces){
System.out.println(type+"\t");
}
}
Type superClass = clazz.getGenericSuperclass();
System.out.println("类的所有继承类为：");
if(superClass!=null){
System.out.println(superClass);
}
}
}