Constructor

implments

AnnotatedElement

extends

AccessibleObject

Methods

newInstance()

• 作用：通过无参构造器创建对象
• 返回值：T

Class<Person> clazz = Person.class;

Person person = clazz.getDeclaredConstructor().newInstance();
System.out.println(person);

newInstance(Object... initargs)

• 作用：通过指定构造器创建对象
• 返回值：T

Class<Person> clazz = Person.class;

Person person = clazz.getConstructor(String.class, int.class)
        .newInstance("Tom", 18);

person.show(); // name=Tom, age=18