参考文章：http://blog.csdn.net/justinavril/article/details/2873664

测试代码：

创建类：

Convey.java

package com.domain;

import java.util.HashSet;
import java.util.Set;

/**
 * Convey entity. @author MyEclipse Persistence Tools
 * 啊是的撒F多少
 */

public class Convey implements java.io.Serializable {

	// Fields

	private Integer id;
	private String name;
	private Double price;
	private Set order = new HashSet(0);

	// Constructors

	/** default constructor */
	public Convey() {
	}

	/** minimal constructor */
	public Convey(String name, Double price) {
		this.name = name;
		this.price = price;
	}

	/** full constructor */
	public Convey(String name, Double price, Set order) {
		this.name = name;
		this.price = price;
		this.order = order;
	}

	// Property accessors

	public Integer getId() {
		return this.id;
	}

	public void setId(Integer id) {
		this.id = id;
	}

	public String getName() {
		return this.name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public Double getPrice() {
		return this.price;
	}

	public void setPrice(Double price) {
		this.price = price;
	}
	/**
	 * sad
	 * @return
	 */
	public Set getOrder() {
		return this.order;
	}

	public void setOrder(Set order) {
		this.order = order;
	}

}

Start.java

package com.domain;

import java.beans.MethodDescriptor;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class Start {

	/**
	 * @param args
	 * @throws NoSuchMethodException 
	 * @throws SecurityException 
	 * @throws InvocationTargetException 
	 * @throws IllegalAccessException 
	 * @throws IllegalArgumentException 
	 */
	public static void main(String[] args) throws Exception{
		// TODO Auto-generated method stub
		
		//获得类中的方法
		Class class1=Convey.class;
		//实例化对象
		Object object=class1.newInstance();
		
		System.out.println("类名："+class1.getName());
		System.out.println("包名："+class1.getPackage());
		//获得字段
		System.out.println("字段：");
		Field [] field=class1.getDeclaredFields();//class1.getFields();
		System.out.println(field.length);
		for (Field field2 : field) {
			System.out.println(field2.getName()+" type："+field2.getType());
		}
		
		//方法
		System.out.println("全部方法");
		Method []  methods= class1.getMethods();
		for (Method method : methods) {
			System.out.println(method.getName());			
		}
		
		//获得公开的方法
		System.out.println("公开的方法");
		Method [] pMethods= class1.getDeclaredMethods();
		for (Method method : pMethods) {
			System.out.println(method);
		}
		
		//获得释文
		System.out.println("释文");
		 Annotation[] annotation= class1.getDeclaredAnnotations();
		 for (Annotation annotation2 : annotation) {
			System.out.println(annotation2);
		}
		 
		 System.out.println("操作对象");
		//invoke方法
		 Class partypes[] = new Class[1]; //参数数量
         partypes[0] = String.class; 	//参数类型
         Method meth = class1.getMethod("setName", partypes);
         
         //赋值
         Object arglist[] = new Object[1];
         arglist[0]="你好啊！";
         //调用方法
         Object retobj = meth.invoke(object, arglist); 
         
         //调用方法 返回结果
         meth = class1.getMethod("getName", new Class[0]);
         retobj= meth.invoke(object, new Class[0]);
         System.out.println(retobj);
		
	}

}

获取指定类中的所有字段、方面、实例化类、设置属性、调用方法