1.ubuntu使用的是openjdk,所以我们需要先找到合适的jdk版本。在命令行中输入命令:
apt-cache search openjdk
返回结果列表(因个人电脑而有所不同):
default-jdk-doc - Standard Java or Java compatible Development Kit (documentation) …(省略部分显示结果) openjdk-6-source - OpenJDK Development Kit (JDK) source files openjdk-7-jre-dcevm - Alternative VM for OpenJDK 7 with enhanced class redefinition openjdk-7-jre-lib - OpenJDK Java runtime (architecture independent libraries) openjdk-7-jre-zero - Alternative JVM for OpenJDK, using Zero/Shark openjdk-8-dbg - Java runtime based on OpenJDK (debugging symbols) openjdk-8-demo - Java runtime based on OpenJDK (demos and examples) openjdk-8-doc - OpenJDK Development Kit (JDK) documentation openjdk-8-jdk - OpenJDK Development Kit (JDK) openjdk-8-jre - OpenJDK Java runtime, using Hotspot JIT openjdk-8-jre-headless - OpenJDK Java runtime, using Hotspot JIT (headless) openjdk-8-jre-jamvm - Alternative JVM for OpenJDK, using JamVM openjdk-8-jre-zero - Alternative JVM for OpenJDK, using Zero/Shark openjdk-8-source - OpenJDK Development Kit (JDK) source files uwsgi-app-integration-plugins - plugins for integration of uWSGI and application uwsgi-plugin-jvm-openjdk-7 - Java plugin for uWSGI (OpenJDK 7)
2.从搜索的列表里找到我们需要安装的jdk版本,如上面标黑的
openjdk-8-jdk - OpenJDK Development Kit (JDK)
3.输入安装命令,进行安装:
apt-get install openjdk-8-jdk
等待命令行显示“done”,即安装成功过。
4.查看安装结果。输入命令:
java -version
显示结果如下:
openjdk version "1.8.0_222"OpenJDK Runtime Environment (build 1.8.0_222-8u222-b10-1~deb9u1-b10)OpenJDK Client VM (build 25.222-b10, mixed mode)
则说明安装成功。
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