External References and the CLASSPATH Variable

• The preceding example worked because the class MyInt does not have any references to symbols external to its file

• However, if you now try:

  • 6% javac test.java
  • you will get an error saying that MyInt cannot be resolved; the compiler does not know where to look

• To use separate compilation, you must tell the compiler where to look for external symbols by setting the CLASSPATH environment variable