The Package Explorer window provides access to all of the project’s files. Figure 2.10 shows the Welcome app project in the Package Explorer window. The Welcome node represents the project. You can have many projects open in the IDE at once—each will have its own top-level node. Within a project’s node, the contents are organized into folders and files. In this chapter, you’ll use only files located in the res
folder, which we discuss in Section 2.4.4—we’ll discuss the other folders as we use them in later chapters.