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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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gwbrown
gwbrown commented Feb 10, 2021

Reindexing data is not as straightforward as it could be. You are required to set up the settings and mapping in advance of a reindex call even if all you're doing is reindexing data in an existing index with no changes (e.g. in preparation for a major version upgrade). While it may seem like all that's required is to GET the existing index settings/mapping and copy/paste into a new index, this

advanced-java

๐Ÿ˜ฎ Core Interview Questions & Answers For Experienced Java(Backend) Developers | ไบ’่”็ฝ‘ Java ๅทฅ็จ‹ๅธˆ่ฟ›้˜ถ็Ÿฅ่ฏ†ๅฎŒๅ…จๆ‰ซ็›ฒ๏ผšๆถต็›–้ซ˜ๅนถๅ‘ใ€ๅˆ†ๅธƒๅผใ€้ซ˜ๅฏ็”จใ€ๅพฎๆœๅŠกใ€ๆตท้‡ๆ•ฐๆฎๅค„็†็ญ‰้ข†ๅŸŸ็Ÿฅ่ฏ†

  • Updated Feb 20, 2021
  • Java

mall้กน็›ฎๆ˜ฏไธ€ๅฅ—็”ตๅ•†็ณป็ปŸ๏ผŒๅŒ…ๆ‹ฌๅ‰ๅฐๅ•†ๅŸŽ็ณป็ปŸๅŠๅŽๅฐ็ฎก็†็ณป็ปŸ๏ผŒๅŸบไบŽSpringBoot+MyBatisๅฎž็Žฐ๏ผŒ้‡‡็”จDockerๅฎนๅ™จๅŒ–้ƒจ็ฝฒใ€‚ ๅ‰ๅฐๅ•†ๅŸŽ็ณป็ปŸๅŒ…ๅซ้ฆ–้กต้—จๆˆทใ€ๅ•†ๅ“ๆŽจ่ใ€ๅ•†ๅ“ๆœ็ดขใ€ๅ•†ๅ“ๅฑ•็คบใ€่ดญ็‰ฉ่ฝฆใ€่ฎขๅ•ๆต็จ‹ใ€ไผšๅ‘˜ไธญๅฟƒใ€ๅฎขๆˆทๆœๅŠกใ€ๅธฎๅŠฉไธญๅฟƒ็ญ‰ๆจกๅ—ใ€‚ ๅŽๅฐ็ฎก็†็ณป็ปŸๅŒ…ๅซๅ•†ๅ“็ฎก็†ใ€่ฎขๅ•็ฎก็†ใ€ไผšๅ‘˜็ฎก็†ใ€ไฟƒ้”€็ฎก็†ใ€่ฟ่ฅ็ฎก็†ใ€ๅ†…ๅฎน็ฎก็†ใ€็ปŸ่ฎกๆŠฅ่กจใ€่ดขๅŠก็ฎก็†ใ€ๆƒ้™็ฎก็†ใ€่ฎพ็ฝฎ็ญ‰ๆจกๅ—ใ€‚

  • Updated Mar 6, 2021
  • Java
leakcanary
liangxiwei
liangxiwei commented Mar 2, 2021

Description

Crash some time,but not always happen

Steps to Reproduce

here is trace:

Caused by kotlin.KotlinNullPointerException
at leakcanary.internal.LeakCanaryFileProvider$Companion.parsePathStrategy(LeakCanaryFileProvider.kt:458)
at leakcanary.internal.LeakCanaryFileProvider$Companion.getPathStrategy(LeakCanaryFileProvider.kt:428)
at leakcanary.internal

about learning Spring Boot via examples. Spring Boot ๆ•™็จ‹ใ€ๆŠ€ๆœฏๆ ˆ็คบไพ‹ไปฃ็ ๏ผŒๅฟซ้€Ÿ็ฎ€ๅ•ไธŠๆ‰‹ๆ•™็จ‹ใ€‚

  • Updated Dec 15, 2020
  • Java
WxJava

ๅพฎไฟกๅผ€ๅ‘ Java SDK ๏ผŒๆ”ฏๆŒๅŒ…ๆ‹ฌๅพฎไฟกๆ”ฏไป˜๏ผŒๅผ€ๆ”พๅนณๅฐ๏ผŒๅฐ็จ‹ๅบ๏ผŒไผไธšๅพฎไฟก๏ผŒๅ…ฌไผ—ๅท็ญ‰็š„ๅŽ็ซฏๅผ€ๅ‘

  • Updated Mar 3, 2021
  • Java
spring-boot-demo

่ฏฅ้กน็›ฎๅทฒๆˆๅŠŸ้›†ๆˆ actuator(็›‘ๆŽง)ใ€admin(ๅฏ่ง†ๅŒ–็›‘ๆŽง)ใ€logback(ๆ—ฅๅฟ—)ใ€aopLog(้€š่ฟ‡AOP่ฎฐๅฝ•web่ฏทๆฑ‚ๆ—ฅๅฟ—)ใ€็ปŸไธ€ๅผ‚ๅธธๅค„็†(json็บงๅˆซๅ’Œ้กต้ข็บงๅˆซ)ใ€freemarker(ๆจกๆฟๅผ•ๆ“Ž)ใ€thymeleaf(ๆจกๆฟๅผ•ๆ“Ž)ใ€Beetl(ๆจกๆฟๅผ•ๆ“Ž)ใ€Enjoy(ๆจกๆฟๅผ•ๆ“Ž)ใ€JdbcTemplate(้€š็”จJDBCๆ“ไฝœๆ•ฐๆฎๅบ“)ใ€JPA(ๅผบๅคง็š„ORMๆก†ๆžถ)ใ€mybatis(ๅผบๅคง็š„ORMๆก†ๆžถ)ใ€้€š็”จMapper(ๅฟซ้€Ÿๆ“ไฝœMybatis)ใ€PageHelper(้€š็”จ็š„Mybatisๅˆ†้กตๆ’ไปถ)ใ€mybatis-plus(ๅฟซ้€Ÿๆ“ไฝœMybatis)ใ€BeetlSQL(ๅผบๅคง็š„ORMๆก†ๆžถ)ใ€upload(ๆœฌๅœฐๆ–‡ไปถไธŠไผ ๅ’Œไธƒ็‰›ไบ‘ๆ–‡ไปถไธŠไผ )ใ€redis(็ผ“ๅญ˜)ใ€ehcache(็ผ“ๅญ˜)ใ€email(ๅ‘้€ๅ„็ง็ฑปๅž‹้‚ฎไปถ)ใ€task(ๅŸบ็ก€ๅฎšๆ—ถไปปๅŠก)ใ€quartz(ๅŠจๆ€็ฎก็†ๅฎšๆ—ถไปปๅŠก)ใ€xxl-job(ๅˆ†ๅธƒๅผๅฎšๆ—ถไปปๅŠก)ใ€swagger(APIๆŽฅๅฃ็ฎก็†ๆต‹่ฏ•)ใ€security(ๅŸบไบŽRBAC็š„ๅŠจๆ€ๆƒ้™่ฎค่ฏ)ใ€SpringSession(Sessionๅ…ฑไบซ)ใ€Zookeeper(็ป“ๅˆAOPๅฎž็Žฐๅˆ†ๅธƒๅผ้”)ใ€RabbitMQ(ๆถˆๆฏ้˜Ÿๅˆ—)ใ€Kafka(ๆถˆๆฏ้˜Ÿๅˆ—)ใ€websocket(ๆœๅŠก็ซฏๆŽจ้€็›‘ๆŽงๆœๅŠกๅ™จ่ฟ่กŒไฟกๆฏ)ใ€socket.io(่Šๅคฉๅฎค)ใ€ureport2(ไธญๅ›ฝๅผๆŠฅ่กจ)ใ€ๆ‰“ๅŒ…ๆˆwarๆ–‡ไปถใ€้›†ๆˆ ElasticSearch(ๅŸบๆœฌๆ“ไฝœๅ’Œ้ซ˜็บงๆŸฅ่ฏข)ใ€Async(ๅผ‚ๆญฅไปปๅŠก)ใ€้›†ๆˆDubbo(้‡‡็”จๅฎ˜ๆ–น็š„starter)ใ€MongoDB(ๆ–‡ๆกฃๆ•ฐๆฎๅบ“)ใ€neo4j(ๅ›พๆ•ฐๆฎๅบ“)ใ€docker(ๅฎนๅ™จๅŒ–)ใ€JPAๅคšๆ•ฐๆฎๆบใ€Mybatisๅคšๆ•ฐๆฎๆบใ€ไปฃ็ ็”Ÿๆˆๅ™จใ€GrayLog(ๆ—ฅๅฟ—ๆ”ถ้›†)ใ€JustAuth(็ฌฌไธ‰ๆ–น็™ปๅฝ•)ใ€LDAP(ๅขžๅˆ ๆ”นๆŸฅ)ใ€ๅŠจๆ€ๆทปๅŠ /ๅˆ‡ๆขๆ•ฐๆฎๆบใ€ๅ•ๆœบ้™ๆต(AOP + Guava RateLimiter)ใ€ๅˆ†ๅธƒๅผ้™ๆต(AOP + Redis + Lua)ใ€ElasticSearch 7.x(ไฝฟ็”จๅฎ˜ๆ–น Rest High Level Client)ใ€HTTPSใ€Flyway(ๆ•ฐๆฎๅบ“ๅˆๅง‹ๅŒ–)ใ€UReport2(ไธญๅ›ฝๅผๅคๆ‚ๆŠฅ่กจ)ใ€‚

  • Updated Feb 27, 2021
  • Java
dbeaver
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

Created by James Gosling

Released May 23, 1995

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