For all projects, right-click to use the context menu to add files to a project. Using this method places files in the proper location in project source or resources.
To add a MIDlet, Java class, Java package, Java interface or Other files, right‐click the project name or the Source Packages node, choose New, and select the file type.
To add files by format (Project, JAR, Folder, Library) right‐click the Resources node and select a format. See Adding Libraries and Resources.