当我跑
sudo apt-get install openjdk-7-jdk
我收到此错误
$ sudo apt-get install openjdk-7-jdk
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package openjdk-7-jdk is a virtual package provided by:
oracle-java9-installer 9b123+9b123arm-1~webupd8~0
oracle-java8-installer 8u92+8u91arm-2~really8u91~webupd8~0
oracle-java7-installer 7u80+7u60arm-0~webupd8~1
You should explicitly select one to install.
E: Package 'openjdk-7-jdk' has no installation candidate
$ sudo apt-get install oracle-java-7-installer
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package oracle-java-7-installer
$ sudo apt-get install openjdk-7-jdk
Reading package lists... …