Java反射成员变量的相关内容

Java反射之调用成员变量

通过反射机制还可以调用成员变量，调用方法需要使用Field对象，它对应着一个方法，获得Field对象需要使用Class类的如下方法：Field[] getFields()：返回所有公有成员变量Field对象数组。Field[] getDeclaredFields()：返回所有成员变量Field对象...

[@倚贤][¥20]既然Java反射可以访问和修改私有成员变量，那封装成private还有意义么？

既然Java反射可以访问和修改私有成员变量，那封装成private还有意义么？

「大师课」搞定 Java 开发基础

23 课时 |

8714 人已学 |

加入学习

Java Spring Boot 2.6.0开发实战-1024程序员节创造营公益课

5 课时 |

1162 人已学 |

加入学习

Java Web开发-Web应用、Tomcat、HTTP请求与响应

17 课时 |

1440 人已学 |

加入学习

【Java】java使用反射访问对象方法和成员变量

虽然java是一门静态语言，但是java的反射机制却给java提供了很强大的动态特性，其特点是能让java支持在运行时才能得知名称与内部结构的类，并能访问其所有的方法和成员变量，包括私有方法和私有成员变量。下面我写了一个比较简洁的测试代码，供参考和使用。测试类 //OBClass.java pac...

共有3条

< 1 >

跳转至： GO

更新时间 2023-06-17 03:15:30

本页面内关键词为智能算法引擎基于机器学习所生成，如有任何问题，可在页面下方点击"联系我们"与我们沟通。

产品推荐

{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"img","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","icon":"","iconImg":"https://img.alicdn.com/tfs/TB1iJox2Br0gK0jSZFnXXbRRXXa-200-200.png","contentLink":"https://www.aliyun.com/product/arms","title":"应用实时监控服务 ARMS","des":"应用实时监控服务ARMS 包含前端监控，应用监控、云拨测等模块，全面涵盖浏览器、小程序、分布式应用、容器环境等不同环境，实现全栈式性能监控与端到端全链路追踪诊断， 让运维监控更加高效便捷。","link1":"https://buy.aliyun.com/arms?spm=5176.8064714.J_976547.pricedetail1111.dd97bf88oe8ohN#/loading","btn1":"15天免费试用","link2":"https://common-buy.aliyun.com/?spm=5176.8140086.1280672.buy11.30f2bb91uujI1A&commodityCode=arms_app_bag#/buy","btn2":"资源包购买","btn3":"帮助文档","link3":"https://help.aliyun.com/product/34364.html?spm=5176.8140086.1280622.1.30f2bb91uujI1A","infoGroup":[{"infoName":"最新动态","infoContent":{"firstContentLink":"https://www.aliyun.com/activity/middleware/observability","firstContentName":"新老用户限时钜惠","lastContentLink":"https://www.aliyun.com/activity/middleware/observability","lastContentName":"最新实践 & 公开课"}},{"infoName":"相关推荐","infoContent":{"firstContentLink":"https://www.aliyun.com/activity/middleware/Application_monitoring?spm=5176.8140086.J_4084816840.3.1db8be45A6RecL","firstContentName":"ARMS - 应用监控","lastContentName":"ARMS - 前端监控","lastContentLink":"https://www.aliyun.com/activity/middleware/web_monitoring?spm=5176.26849857.J_9938243310.4.640115e9rV41KE"}},{"infoName":"产品入门","infoContent":{"firstContentName":"快速接入","lastContentName":"价格说明","firstContentLink":"https://help.aliyun.com/document_detail/65257.html?spm=a2c4g.11174283.6.568.7e1a345chBs6Ka","lastContentLink":"https://www.aliyun.com/ntms/price/detail/arms_detail?spm=5176.8140086.J_5253785160.5.671c2c909ipO3p"}},{"infoName":"相关推荐","infoContent":{"firstContentName":"ARMS - 云拨测","firstContentLink":"https://www.aliyun.com/activity/middleware/website/performance/test?spm=5176.20960838.0.0.6d33305emfVIyC","lastContentLink":"","lastContentName":""}}]}],"card":[],"search":[],"infoCard":[{"bannerUrl":"https://img.alicdn.com/tfs/TB1Xf81a3gP7K4jSZFqXXamhVXa-5169-974.jpg","bannerTitle":"mPaaS 小程序","bannerContent":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。<br>不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","liveButtonName":"查看详情","liveButtonLink":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","contentTitle":"提供即开即用的端上体验","homePageLink":"https://common-buy.aliyun.com/?spm=5176.14673561.J_8751524360.2.56702709BussF3&commodityCode=mpaas_beta#/open","homePageName":"免费试用","linkGroup":[{"linkContent":"发布包大小极致优化，节省流量和存储。"},{"linkContent":"服务迭代不再受发版限制，快速发布，快速迭代。"},{"linkContent":"业务开发效率更加优秀，一次开发，多端运行。"}]}],"title":{"mainTitle":"应用实时监控服务ARMS","subtitle":"","linkUrl":"","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}

{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"img","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","icon":"","iconImg":"https://img.alicdn.com/tfs/TB1iJox2Br0gK0jSZFnXXbRRXXa-200-200.png","contentLink":"https://www.aliyun.com/product/arms","title":"应用实时监控服务 ARMS","des":"应用实时监控服务ARMS 包含前端监控，应用监控、云拨测等模块，全面涵盖浏览器、小程序、分布式应用、容器环境等不同环境，实现全栈式性能监控与端到端全链路追踪诊断， 让运维监控更加高效便捷。","link1":"https://buy.aliyun.com/arms?spm=5176.8064714.J_976547.pricedetail1111.dd97bf88oe8ohN#/loading","btn1":"15天免费试用","link2":"https://common-buy.aliyun.com/?spm=5176.8140086.1280672.buy11.30f2bb91uujI1A&commodityCode=arms_app_bag#/buy","btn2":"资源包购买","btn3":"帮助文档","link3":"https://help.aliyun.com/product/34364.html?spm=5176.8140086.1280622.1.30f2bb91uujI1A","infoGroup":[{"infoName":"最新动态","infoContent":{"firstContentLink":"https://www.aliyun.com/activity/middleware/observability","firstContentName":"新老用户限时钜惠","lastContentLink":"https://www.aliyun.com/activity/middleware/observability","lastContentName":"最新实践 & 公开课"}},{"infoName":"相关推荐","infoContent":{"firstContentLink":"https://www.aliyun.com/activity/middleware/Application_monitoring?spm=5176.8140086.J_4084816840.3.1db8be45A6RecL","firstContentName":"ARMS - 应用监控","lastContentName":"ARMS - 前端监控","lastContentLink":"https://www.aliyun.com/activity/middleware/web_monitoring?spm=5176.26849857.J_9938243310.4.640115e9rV41KE"}},{"infoName":"产品入门","infoContent":{"firstContentName":"快速接入","lastContentName":"价格说明","firstContentLink":"https://help.aliyun.com/document_detail/65257.html?spm=a2c4g.11174283.6.568.7e1a345chBs6Ka","lastContentLink":"https://www.aliyun.com/ntms/price/detail/arms_detail?spm=5176.8140086.J_5253785160.5.671c2c909ipO3p"}},{"infoName":"相关推荐","infoContent":{"firstContentName":"ARMS - 云拨测","firstContentLink":"https://www.aliyun.com/activity/middleware/website/performance/test?spm=5176.20960838.0.0.6d33305emfVIyC","lastContentLink":"","lastContentName":""}}]}],"card":[],"search":[],"infoCard":[{"bannerUrl":"https://img.alicdn.com/tfs/TB1Xf81a3gP7K4jSZFqXXamhVXa-5169-974.jpg","bannerTitle":"mPaaS 小程序","bannerContent":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。<br>不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","liveButtonName":"查看详情","liveButtonLink":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","contentTitle":"提供即开即用的端上体验","homePageLink":"https://common-buy.aliyun.com/?spm=5176.14673561.J_8751524360.2.56702709BussF3&commodityCode=mpaas_beta#/open","homePageName":"免费试用","linkGroup":[{"linkContent":"发布包大小极致优化，节省流量和存储。"},{"linkContent":"服务迭代不再受发版限制，快速发布，快速迭代。"},{"linkContent":"业务开发效率更加优秀，一次开发，多端运行。"}]}],"title":{"mainTitle":"应用实时监控服务ARMS","subtitle":"","linkUrl":"","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}}