1.1 Ntawm Ubuntu lossis Linux, peb tuaj yeem siv qhov twg javac kom paub qhov twg JDK raug teeb tsa. Hauv qhov piv txwv saum toj no, JDK tau teeb tsa ntawm /usr/lib/jvm/adoptopenjdk-11-hotspot-amd64/ . 1.2 Ntawm Windows, peb tuaj yeem siv qhov twg javac kom paub qhov twg JDK raug teeb tsa.
Kuv yuav nrhiav tau kuv JDK version Ubuntu li cas?
Txhawm rau txheeb xyuas Java version ntawm Linux Ubuntu / Debian / CentOS:
- Qhib lub qhov rai qhov rai.
- Khiav cov lus txib nram qab no: java -version.
- Cov zis yuav tsum tso saib cov version ntawm Java pob tau nruab rau hauv koj lub cev. Hauv qhov piv txwv hauv qab no, OpenJDK version 11 tau teeb tsa.
What version of JDK do I have?
Java version tuaj yeem pom hauv Java Control Panel. Nyob rau hauv General tab nyob rau hauv Java Control Vaj Huam Sib Luag, lub version muaj nyob rau hauv cov lus hais. Ib lub dialog tshwm (tom qab nyem Txog) uas qhia Java version.
Kuv yuav paub li cas kuv JDK tau nruab Linux?
Qhov no nyob ntawm me ntsis ntawm koj lub pob system ... yog tias java hais kom ua haujlwm, koj tuaj yeem ntaus readlink -f $(uas java) nrhiav qhov chaw ntawm java hais kom ua. Ntawm OpenSUSE system kuv nyob rau tam sim no nws rov qab /usr/lib64/jvm/java-1.6. txz | | |-- 0-openjdk-1.6. 0/jre/bin/java (tab sis qhov no tsis yog ib qho system uas siv apt-get ).
Kuv yuav paub li cas yog tias kuv muaj JDK ntsia?
Tej zaum koj yuav muaj JRE (Java Runtime Ib puag ncig) uas yuav tsum tau khiav java daim ntawv thov hauv computer lossis JDK raws li qhia hauv qab no. 1. Qhib cov lus txib thiab nkag mus rau "java -version". Yog hais tias ntsia version naj npawb yog tso tawm kom pom.
How do I know if I have jdk or OpenJDK?
Koj tuaj yeem sau ib tsab ntawv bash yooj yim los xyuas qhov no:
- Qhib cov ntawv nyeem (xws li vim lossis emacs).
- tsim ib cov ntaub ntawv npe script.sh (los yog ib lub npe nrog lub . …
- paste cov cai hauv qab no rau hauv nws: #!/bin/bash yog [[$(java -version 2>&1) == *”OpenJDK”* ]]; ces ncha ok; lwm echo 'tsis ok'; fi ua.
- txuag thiab tawm ntawm tus editor.
Kuv yuav paub li cas yog JVM khiav ntawm Linux?
koj ua tau khiav cov lus txib jps (los ntawm cov ntawv tais ceev tseg ntawm JDK yog tias nws tsis nyob hauv koj txoj kev) kom paub seb cov txheej txheem java (JVMs) ua haujlwm li cas ntawm koj lub tshuab. Nyob ntawm JVM thiab haiv neeg libs. Koj tuaj yeem pom JVM xov xwm tshwm sim nrog PIDs sib txawv hauv ps .
Puas yog java 1.8 tib yam li java 8?
javac -source 1.8 (yog ib qho alias rau javac -cov 8 ) java.
What is the latest JDK version?
Qhov kev tso tawm LTS tam sim no yog JKJ 11, uas tuaj txog lub Cuaj Hlis 2018. LTS tso tawm tuaj txog txhua peb xyoos. JDK 15 ua raws li JDK 14, uas tau tshaj tawm thaum Lub Peb Hlis 17, 2020.
Puas yog Jdk siv dawb?
You can download the latest OpenJDK release of Java from Oracle, for free, under an open source license from jdk.java.net.
Kuv yuav paub li cas yog Tomcat tau nruab rau Linux?
Siv cov ntawv tso tawm
- Windows: hom RELEASE-NOTES | nrhiav "Apache Tomcat Version" Tso Tawm: Apache Tomcat Version 8.0.22.
- Linux: miv RELEASE-NOTES | grep “Apache Tomcat Version” Tso Tawm: Apache Tomcat Version 8.0.22.
Where does OpenJDK install?
Re: openJDK install path
Note: Cloudera strongly recommends installing Oracle JDK at /usr/java/<jdk-version> and OpenJDK at /usr/lib/jvm (or /usr/lib64/jvm on SLES 12), which allows Cloudera Manager to auto-detect and use the correct JDK version.
Kuv yuav nrhiav tau kuv txoj kev java li cas?
Qhib Command Prompt qhov rai (Win⊞ + R, ntaus cmd, ntaus Enter). Nkag mus rau hais kom echo %JAVA_HOME% . Qhov no yuav tsum tso tawm txoj hauv kev rau koj Java installation nplaub tshev.
Can NetBeans run without JDK?
Note: Java TM SE Development Kit (JDK) 5.0, JDK 6, and JDK 7 are not supported on any platform for this release. You must have JDK 8 on your system to install and run NetBeans IDE 8.2.
Puas yog OpenJDK tib yam li Oracle JDK?
Oracle JDK tau ntawv tso cai raws li Oracle Binary Code Daim Ntawv Pom Zoo, thaum OpenJDK muaj GNU General Public License (GNU GPL) version 2 nrog rau kev sib txuas tshwj xeeb. Muaj qee qhov kev tso cai cuam tshuam thaum siv Oracle lub platform. … Txawm li cas los xij, OpenJDK yog qhov qhib kiag li thiab tuaj yeem ua tau siv nws dawb xwb.
Kuv yuav nruab qhov tseeb JDK ntawm Ubuntu li cas?
Java Runtime Ib puag ncig
- Tom qab ntawd koj yuav tsum xyuas yog tias Java twb tau teeb tsa: java -version. …
- Khiav cov lus txib hauv qab no rau nruab OpenJDK: sudo apt nruab default-jre.
- Ntaus y (yog) thiab nias Enter kom rov pib teeb tsa. …
- JRE yog ntsia! …
- Ntaus y (yog) thiab nias Enter kom rov pib teeb tsa. …
- JDK tau nruab!