Recently, because of changing the operating system and copying the project from the Mac system to win10, there have been many problems in the deployment and startup of the project. One of the first problems is: Could not write file: C:\...\.classpath (...represents the project path under the workspace). I went to this path and saw that there is this file...
After checking on the Internet, it is said that the .classpath file is a hidden file. Under normal circumstances, the project should not be hidden under win. So myeclipse can't find it anymore. The solution is to right-click the file and remove the ☑️ from the "hidden" property. this problem is solved