重构 Java 管理

[Glavo]

• 在设置中增加 Java 管理页面，用户可通过该页面安装、添加、查看、禁用或卸载 Java；
• 优化 Java 扫描逻辑；
• 优化 Java 自动选择逻辑；
• 支持用户指定所使用的 Java 版本。

暂未测试，晚点再说。

[burningtnt]

慢慢搞，这个功能还有很多优化空间~

[3gf8jv4dv]

在指定了 Java 版本为 8 时启动游戏，他会直接提示是否下载 Java，而不会使用现有的

Although subsequent commits tried to solve this problem, they seemed to only apply to Release versions. some snapshots and pre-release versions still give error messages.

Preview

Specify Java Version 8, Game version 21w19a

Specify Java Version 8, Game version 1.17

Specify Java Version 16, Game version 1.18-pre2

Specify Java Version 16, Game version 1.18

Specify Java Version 17, Game version 24w14a

Specify Java Version 17, Game version 1.20.5-pre1

[burningtnt]

Really helpful testing! Thanks.

[Glavo]

Java binaries (Java 16, 17, 21) downloaded directly from Java Management do not recognize vendors. However, moving it to another location (such as the partition root) and adding it manually will recognize that its vendor is Microsoft.

The following two Javas are essentially identical.

HMCL will try to read Java information in two ways:

1. Read the $JAVA_HOME/release file;
2. Run $JAVA_HOME/bin/java -XshowSettings:properties -version and read its output.

There are some problems with the first way:

• Unable to verify that the Java is complete;
• The release file of JDK/JRE may lack some information.

But this way is much faster (no need to run these Java), so it will be used as the primary way to read Java information.

What you are experiencing is because its release file does not contain this information. Due to some rules, when you move it to another location, HMCL reads the Java information through the second way.

I have now done something to optimize this behavior and this issue should be resolved after you uninstall and reinstall Java. There may still be some edge cases where similar problems arise, but I don't think it's worth the extra effort to solve them.

[3gf8jv4dv]

Use this build.

In some cases, when selecting a specific Java binary that already exists, the box to the right of Specify Java Version will be filled with characters even though the user cannot enter it.

Preview

[burningtnt]

Feature Request: Optimize the dialog when HMCL is launched with Java 8-10 by providing a direct button to download Java 11/17

See: #3007

[zkitefly]

Hex-Dragon/PCL2#4261

根据该 issue，或许在 HMCL 的自动查找路径时，若检测到包含 java8path_target_ 的 java 路径时或许应该排除？

[Glavo]

如果没有明显问题，我计划在本周末合并本 PR。