It’s really simple to update Java on Ubuntu – just 2 simple commands. While you’re using PPA as I described in theinstallation chapteryou can execute update and upgrade commands in the console and that’s it. OpenTerminal (Alt+Ctrl+T)and execute: sudo apt-get update sudo apt-get upg...
update-alternatives: using /usr/lib/jvm/java-8-oracle/jre/bin/keytool to provide /usr/bin/keytool (keytool) in 自动模式 update-alternatives: using /usr/lib/jvm/java-8-oracle/jre/bin/orbd to provide /usr/bin/orbd (orbd) in 自动模式 update-alternatives: using /usr/lib/jvm/java-8-orac...
步骤一:更新软件包列表 在安装Java之前,首先需要更新系统的软件包列表。打开终端并执行以下命令: sudoaptupdate 1. 步骤二:安装Java Development Kit(JDK) 在Ubuntu上,可以使用OpenJDK(开源的Java开发工具包)来安装Java。执行以下命令来安装OpenJDK 8: sudoaptinstallopenjdk-8-jdk 1. 安装过程中,系统会提示您输入...
update-alternatives: using /usr/java/jdk1.7/bin/java to provide /usr/bin/java (java) in 自动模式 sky@sky-VGN-CR23-B:/usr/java$ sudo update-alternatives --config java There is only one alternative in link group java (providing /usr/bin/java): /usr/java/jdk1.7/bin/java 无需配置。 s...
现在我们将已经安装的SUN JDK添加到java命令的链接组下: 使用的到的命令是update-alternatives --installlinknamepathpriority,具体命令如下: sheleng@r61e:~$ sudo update-alternatives --install \ /usr/bin/java java /usr/local/java/jdk1.7.0_60/bin/java 1061 ...
//ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu bionic InRelease无法解析域名“ppa.launchpad.net”错误:18 http://cn.archive.ubuntu.com/ubuntu bionic-proposed InRelease无法解析域名“cn.archive.ubuntu.com”错误:19 http://ppa.launchpad.net/webupd8team/java/ubuntu bionic InRelease无法解析域名“...
launchpad.net/webupd8team/java/ubuntu/dists/bionic/InRelease 无法解析域名“ppa.launchpad.net” W: 部分索引文件下载失败。如果忽略它们,那将转而使用旧的索引文件。 我们可以看到,大概我们无法对像"cn.archive.ubuntu.com"、"packages.microsoft.com"之类的网站进行域名解析。出现这一问题主要是因为DNS解析有...
update-alternatives: using /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java to provide /usr/bin/java (java) in manual mode. [19:37:24]@~$ java -version java version "1.6.0_35" OpenJDK Runtime Environment (IcedTea6 1.13.7) (6b35-1.13.7-1ubuntu0.12.04.2) ...
# update-alternatives--install/usr/bin/java java/opt/jdk1.8.0_91/bin/java200# update-alternatives--install/usr/bin/java java/opt/jdk1.8.0_111/bin/java300 其中: 第一个参数--install表示向update-alternatives注册服务名。 第二个参数是注册最终地址,成功后将会把命令在这个固定的目的地址做真实命令的...
Java Development Kit 8 Release Notes Java SE 8u20 Bundled Patch Release (BPR) - Bug Fixes and Updates The following sections summarize changes made in all Java SE 8u20 BPRs. Bug fixes and any other changes are listed below in date order, most current BPR first. Note that bug fixes in...