First, how can I modify the default path of the eclipse new project (Use default location)?
You find that your project can only be placed in a fixed folder (Workspace). Changing the default storage path will cause the project creation to fail. The following method can change the default path.Select File-->Switch Workspace-->Other..., then click Browse to change the default path.
Second, how to run applet program?
If you run the application program for the first time, then when you click Run, it will only show the previous project name.Select DebugConfiguration, and then in the Name, Project, Applet three edit boxes to fill in the appropriate name.Click on the triangle next to Run and the corresponding name you wrote in the Name box will appear. Click it to run.
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