Java通过反射机制调用某个类的方法

通过反射机制调用类的方法，主要用到下面的方法：

public Object invoke(Object obj, Object... args)

参数：

• obj是调用基础方法的实例对象
• 调用基础方法索要传递的参数，参数是一个变长类型

下面是一个具体的示例：

package thread;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class Teacher {

    public String getName(String name, String address, Integer age) {
        return name + "是一名人民教师,在"+address+","+age+"岁";
    }

    public static void main(String[] args) {
        try {
            Class<?> clazz = Class.forName("thread.Teacher");
            Method method = clazz.getMethod("getName", String.class, String.class, Integer.class);
            Object obj = method.invoke(clazz.newInstance(), "李梅","上海", 21);
            System.out.println(obj);
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (NoSuchMethodException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (SecurityException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IllegalArgumentException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (InstantiationException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}