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noobcoder
Asked: 2020-12-07 16:22:18 +0800 CST

无法在 Ubuntu 18.04 上安装 OpenJDK

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我尝试了几种安装方法openjdk，这是我安装时得到的：java -version

openjdk version "11.0.4" 2019-07-16
OpenJDK Runtime Environment (build 11.0.4+11-post-Ubuntu-1ubuntu218.04.3)
OpenJDK 64-Bit Server VM (build 11.0.4+11-post-Ubuntu-1ubuntu218.04.3, mixed mode, sharing)

但是当我执行 javac -version 时，它说找不到 javac。我执行以下操作：sudo apt-get install default-jre

The following packages have unmet dependencies:
 default-jre : Depends: default-jre-headless (= 2:1.10-63ubuntu1~02) but 2:1.11-68ubuntu1~18.04.1 is to be installed
               Depends: openjdk-11-jre but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

然后：sudo apt-get install default-jdk

default-jdk : Depends: default-jre (= 2:1.10-63ubuntu1~02) but it is not going to be installed
              Depends: default-jdk-headless (= 2:1.10-63ubuntu1~02) but it is not going to be installed
              Depends: openjdk-11-jdk but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

然后：sudo update-alternatives --config java

替代 java 有 2 种选择（提供 /usr/bin/java）。

  Selection    Path                                            Priority   Status
------------------------------------------------------------
* 0            /usr/lib/jvm/java-11-openjdk-amd64/bin/java      1111      auto mode
  1            /usr/lib/jvm/java-11-openjdk-amd64/bin/java      1111      manual mode
  2            /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java   1081      manual mode

如何解决这些问题并正确安装 java 和 javac？

package-management apt java jdk openjdk

1 个回答

  1. Best Answer

    我可以通过在错误消息中下载所需的版本来缓解此问题。就我而言，我从这里下载并安装了 openjdk-11-jdk_11.0.9.1+1-0ubuntu1~18.04_amd64.deb 及其所有必需的依赖项：https ://ubuntu.pkgs.org/18.04/ubuntu-updates -main-amd64/openjdk-11-jdk_11.0.9.1+1-0ubuntu1~18.04_amd64.deb.html。

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