获取运行时类的方法结构

package com.day0324_2;
import com.day0324_1.Person;
import org.junit.jupiter.api.Test;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
/**
 * 获取运行时类的方法结构
 *
 *
 */
public class MethodTest {
    @Test
    public void test1(){
        Class clazz= Person.class;
        //getMethods()：获取当前运行时类及其父类为public权限的方法
        Method[] methods = clazz.getMethods();
        for (Method m :
                methods) {
            System.out.println(m);
        }
        System.out.println();
        //getDeclaredMethods()：获取当前运行时类当中声明的所有方法（不包含父类中的）
        Method[] declaredMethods = clazz.getDeclaredMethods();
        for (Method m :
                declaredMethods) {
            System.out.println(m);
        }
    }
    /*
    @Xxx
    权限修饰符 返回值类型  方法名(参数类型1 形参名1，...)throws XxxException{
     */
    @Test
    public void test2(){
        Class clazz= Person.class;
        Method[] declaredMethods = clazz.getDeclaredMethods();
        for (Method m :
                declaredMethods) {
            //1.获取方法声明的注解
            Annotation[] annos = m.getAnnotations();
            for (Annotation a :
                    annos) {
                System.out.println(a);
            }
            //2.权限修饰符
            System.out.print(Modifier.toString(m.getModifiers())+"\t");
            //3.返回值类型
            System.out.print(m.getReturnType()+"\t");
            //4.方法名
            System.out.print(m.getName());
            System.out.print("(");
            //5.形参列表
            Class[] parameterTypes = m.getParameterTypes();
            if (!(parameterTypes==null&&parameterTypes.length==0)){
                for (int i=0;i< parameterTypes.length;i++){
                    if(i==0){
                        System.out.print(parameterTypes[i].getName()+" args_"+i);
                    }else {
                        System.out.print(","+parameterTypes[i].getName()+" args_"+i);
                    }
                }
            }
            System.out.print(")");
            //6.抛出异常
            Class[] exceptionTypes = m.getExceptionTypes();
            if (exceptionTypes.length>0){
                System.out.print("throw ");
                for (int i=0;i<exceptionTypes.length;i++){
                    if(i==exceptionTypes.length-1){
                        System.out.print(exceptionTypes[i].getName());
                        break;
                    }
                    System.out.print(exceptionTypes[i].getName()+",");
                }
            }
            System.out.println();
        }
    }
}