Objects and Data Structures - The Law of Demeter

[jnguyen095]

• The method should not invoke methods on objects that are returned by any of the allowed functions. In other words, talk to friends, not to strangers

final String outputDir = ctxt.getOptions().getScratchDir().getAbsolutePath();

• It is usually best to split them up as follows:

Options opts = ctxt.getOptions();
File scratchDir = opts.getScratchDir();
final String outputDir = scratchDir.getAbsolutePath();