Assuming that you meant to state 'Class Diagram' instead of 'Project Hierarchy', I've used the following Eclipse plug-ins to generate Class Diagrams at various points in my professional career:
EclipseUML from Omondo. Only commercial versions appear to be available right now. The class diagram in your question, is most likely generated by this plugin.
Obligatory links
The listed tools will not generate class diagrams from source code, or atleast when I used them quite a few years back. You can use them to handcraft class diagrams though.
UMLet. I used this several years back. Appears to be in use, going by the comments in the Eclipse marketplace.
Violet. This supports creation of other types of UML diagrams in addition to class diagrams.
Except for ObjectAid and a few other mentions, most of the Eclipse plug-ins mentioned in the listed questions may no longer be available, or would work only against older versions of Eclipse.
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阶段使用了以下 Eclipse 插件来生成类图：
强制链接
列出的工具不会从源代码生成类图，至少在我几年前使用它们时是这样。不过，您可以使用它们来手工制作类图。
StackOverflow 上的相关问题
除了 ObjectAid 和其他一些提及之外，大多数 Eclipse 插件都提到了列出的问题中的内容可能不再可用，或者仅适用于旧版本的 Eclipse。
Assuming that you meant to state 'Class Diagram' instead of 'Project Hierarchy', I've used the following Eclipse plug-ins to generate Class Diagrams at various points in my professional career:
Obligatory links
The listed tools will not generate class diagrams from source code, or atleast when I used them quite a few years back. You can use them to handcraft class diagrams though.
Related questions on StackOverflow
Except for ObjectAid and a few other mentions, most of the Eclipse plug-ins mentioned in the listed questions may no longer be available, or would work only against older versions of Eclipse.
一定是Eclipse插件吗？我使用 doxygen，只需提供您的代码文件夹，它会处理其余的事情。
Must it be an Eclipse plug-in? I use doxygen, just supply your code folder, it handles the rest.
尝试Amateras。它是一个非常好的生成 UML 图（包括类图）的插件。
Try Amateras. It is a very good plugin for generating UML diagrams including class diagram.
尝试 eUML2。它是一个单击生成器，无需拖放。
Try eUML2. its a single click generator no need to drag n drop.