Java
為什麼不能刪除java版本？
刪除 openjdk-17-jre 和 jdk ：
sudo apt remove openjdk-17-jre openjdk-17-jdk Reading package lists... Done Building dependency tree... Done Reading state information... Done The following package was automatically installed and is no longer required: openjdk-17-jdk-headless Use 'sudo apt autoremove' to remove it. The following packages will be REMOVED: openjdk-17-jdk openjdk-17-jre 0 upgraded, 0 newly installed, 2 to remove and 1 not upgraded. After this operation, 9,250 kB disk space will be freed. Do you want to continue? [Y/n] y (Reading database ... 295782 files and directories currently installed.) Removing openjdk-17-jdk:amd64 (17~19-1) ... update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/jconsole to provide /usr/bin/jconsole (jconsole) in auto mode Removing openjdk-17-jre:amd64 (17~19-1) ... Processing triggers for hicolor-icon-theme (0.17-2) ... debian@debian:~/Downloads$ java -version openjdk version "17-ea" 2021-09-14 OpenJDK Runtime Environment (build 17-ea+19-Debian-1) OpenJDK 64-Bit Server VM (build 17-ea+19-Debian-1, mixed mode, sharing) debian@debian:~/Downloads$ sudo apt autoremove Reading package lists... Done Building dependency tree... Done Reading state information... Done The following packages will be REMOVED: openjdk-17-jdk-headless 0 upgraded, 0 newly installed, 1 to remove and 1 not upgraded. After this operation, 248 MB disk space will be freed. Do you want to continue? [Y/n] y重新啟動並再次登錄。
java -version openjdk version "17-ea" 2021-09-14 OpenJDK Runtime Environment (build 17-ea+19-Debian-1) OpenJDK 64-Bit Server VM (build 17-ea+19-Debian-1, mixed mode, sharing)為什麼不能刪除java版本？
您還需要刪除
openjdk-17-jre-headless：sudo apt purge openjdk-17-jre-headless由於這沒有標記為可自動刪除，因此可能還有其他軟體包仍然依賴它；上面的命令會告訴你是否是這種情況。