828: Mainline

Resource locators help you in two conspicuous ways:

• Resource locators find files even after you have moved your program from one directory to another. You need this feature when you develop a Java program on your personal machine in the expectation of moving it later to some other machine.
• Resource locators find files properly not only for standalone applications, but also for browser applications. You need this feature when you develop a program for a browser, which must honor the security constraints described in Segment 836.