Interfaces, GUIs, and Applets

CS 161 - Java

"In our last episode..."

Two or more methods may have the same name but take different arguments (number, type, order); they have different signatures.

Question: In what way may two method signatures NOT differ to achieve overloading

Reclaims the memory used by objects for which no more references exists.

Question: What does that mean?; Why is it a good thing?

Input / Output using Reader / Writer classes from java.io package.
You can 'stack' different I/O classes to get additional capabilities. e.g., the BufferedReader class.
Generally, all of the additional xxxReader and yyyWriter classes, e.g., InputStreamReader, BufferedReader, FileWriter, inherit the capabilities of the abstract parent Reader and Writer classes.
Input (and Output) of text is different from I/O of Java primitive data.