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Java was originally developed as an alternative to the C/C++ programming languages. It is now mainly used for building web, desktop, mobile, and embedded applications. Java is owned and licensed through Oracle, with free and open source implementations available from Oracle and other vendors.

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advanced-java

doocs / advanced-java

Star 60.3k

😮 Core Interview Questions & Answers For Experienced Java(Backend) Developers | 互联网 Java 工程师进阶知识完全扫盲：涵盖高并发、分布式、高可用、微服务、海量数据处理等领域知识

java redis elasticsearch distributed-systems spring-cloud zookeeper rpc message-queue high-availability hystrix ribbon eureka microservices-architecture feign high-concurrency dubbo advanced-java distributed-search-engine springcloud-config doocs
  • Updated Feb 18, 2022
  • Java

elastic / elasticsearch

Star 58.6k
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macrozheng / mall

Star 56.1k

mall项目是一套电商系统，包括前台商城系统及后台管理系统，基于SpringBoot+MyBatis实现，采用Docker容器化部署。 前台商城系统包含首页门户、商品推荐、商品搜索、商品展示、购物车、订单流程、会员中心、客户服务、帮助中心等模块。 后台管理系统包含商品管理、订单管理、会员管理、促销管理、运营管理、内容管理、统计报表、财务管理、权限管理、设置等模块。

mysql java docker redis elasticsearch spring spring-boot mongodb rabbitmq spring-cloud elk spring-security swagger-ui springboot mybatis springcloud
  • Updated Feb 16, 2022
  • Java

TheAlgorithms / Java

Star 44.4k
Open

Variable type writing error

4
Boris-Chang
Boris-Chang commented Feb 15, 2022

Describe the bug
Variable type writing error

To Reproduce
Steps to reproduce the behavior:

  1. Go to 'Java/src/main/java/com/thealgorithms/datastructures/trees'
  2. Click on 'AVLSimple'
  3. Scroll down to 'Line 85'
  4. See error

Expected behavior
Modify variable “Strings” to “String”

Screenshots
If applicable, add screenshots to help explain your problem.
![image](h

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bug help wanted good first issue

jeecgboot / jeecg-boot

Star 27.9k

「企业级低代码平台」前后端分离架构SpringBoot 2.x，SpringCloud，Ant Design&Vue，Mybatis-plus，Shiro，JWT。强大的代码生成器让前后端代码一键生成，无需写任何代码! 引领新的开发模式OnlineCoding->代码生成->手工MERGE，帮助Java项目解决70%重复工作，让开发更关注业务，既能快速提高效率，帮助公司节省成本，同时又不失灵活性。

java admin spring spring-boot vue spring-cloud codegenerator antd springboot mybatis shiro activiti ant-design springcloud low-code jbpm jeecg ant-design-vue jeecgboot jeecg-boot
  • Updated Feb 18, 2022
  • Java
leakcanary

square / leakcanary

Star 27.2k
Open

CoordinatorLayout.mPreSortedChildren retains references to Views from destroyed Fragments

3
eygraber
eygraber commented Oct 28, 2020

I have a CoordinatorLayout that I am using as a fragment container, and I started getting leak reports after fragments are getting destroyed, because their View's are referenced by the container's mPreSortedChildren.

Looking at the ViewGroup source, it seems like that gets cleared when buildOrderedChildList is called, but I'm not fully sure what would trigger that (seems like a draw will,

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status: help wanted type: leak good first issue
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spring-boot-demo

xkcoding / spring-boot-demo

Star 24.7k

该项目已成功集成 actuator(监控)、admin(可视化监控)、logback(日志)、aopLog(通过AOP记录web请求日志)、统一异常处理(json级别和页面级别)、freemarker(模板引擎)、thymeleaf(模板引擎)、Beetl(模板引擎)、Enjoy(模板引擎)、JdbcTemplate(通用JDBC操作数据库)、JPA(强大的ORM框架)、mybatis(强大的ORM框架)、通用Mapper(快速操作Mybatis)、PageHelper(通用的Mybatis分页插件)、mybatis-plus(快速操作Mybatis)、BeetlSQL(强大的ORM框架)、upload(本地文件上传和七牛云文件上传)、redis(缓存)、ehcache(缓存)、email(发送各种类型邮件)、task(基础定时任务)、quartz(动态管理定时任务)、xxl-job(分布式定时任务)、swagger(API接口管理测试)、security(基于RBAC的动态权限认证)、SpringSession(Session共享)、Zookeeper(结合AOP实现分布式锁)、RabbitMQ(消息队列)、Kafka(消息队列)、websocket(服务端推送监控服务器运行信息)、socket.io(聊天室)、ureport2(中国式报表)、打包成war文件、集成 ElasticSearch(基本操作和高级查询)、Async(异步任务)、集成Dubbo(采用官方的starter)、MongoDB(文档数据库)、neo4j(图数据库)、docker(容器化)、JPA多数据源、Mybatis多数据源、代码生成器、GrayLog(日志收集)、JustAuth(第三方登录)、LDAP(增删改查)、动态添加/切换数据源、单机限流(AOP + Guava RateLimiter)、分布式限流(AOP + Redis + Lua)、ElasticSearch 7.x(使用官方 Rest High Level Client)、HTTPS、Flyway(数据库初始化)、UReport2(中国式复杂报表)。

java demo web spring spring-boot spring-boot-demo spring-boot-2 in-action xkcoding
  • Updated Feb 5, 2022
  • Java
dbeaver

dbeaver / dbeaver

Star 24.7k
Open

Decompression of blobs

9
KOLANICH
KOLANICH commented Jan 11, 2019

Sometimes it is needed to store compressed data in the DB. Unfortunately not all the DBs have built-in compression and FUSE compressed FSes are not available for every OS. So it may make sense to store compressed binary blobs in the DB.

Unfortunately when one sees them in DBeaver he sees them compressed, but often they are needed uncompressed. So it'd be nice to have a feature to decompress the

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feature request help wanted good first issue

Created by James Gosling

Released May 23, 1995

Website
www.oracle.com/technetwork/java/javase/overview/index.html
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