我试图在ubuntu上安装java9jre和jdk。但我找不到。我安装了所有的软件包:ii openjdk-9-jdk:amd64 9~b181-4 amd64 OpenJDK Development Kit (JDK) ii openjdk-9-jdk-headless" OpenJDK Runtime Environment (build 9-Ubuntu+0-9b181-4) OpenJDK 64-Bit Server VM (buil
我试图安装JDK1.7sudo apt updatePackage openjdk-7-jdk is not available, but is referred to by another package.package is missing, has been obsoleted, or
is only available from another so