When learning design patterns, I hope to be able to draw class diagrams and clarify relationships. But StarUML also has to rewrite class names, properties, methods, etc., which is not very convenient. The method of installing plug-ins is given on the Internet, and you can drag and drop classes directly in eclipse, which is very convenient. However, the plug-in address given on the Internet is invalid, and now it is sorted out as follows:
1. Install GEF. eclipse->Help->Install new software
The address of GEF is: http://download.eclipse.org/tools/gef/updates/legacy/releases/
2. Download AmaterasUML, the official address is its official download address is: http://sourceforge.jp/projects/amateras/releases/#21568
After downloading, put the jar package into the plugins folder and restart it.