Java Learning Week Fourth

This is the fourth week of summer vacation, this week I continue to learn the basic knowledge of Java.

1. Learn about Java class inheritance, learn about Java interface Knowledge of Java each class has and only a direct parent class, there is no multiple inheritance, but the interface can inherit multiple, if the interface as a special class can be called multiple inheritance, as well as the content of the abstract class.
2. This week adhere to the code, adhere to the first few weeks to hit the code summary of the habit, persist in thinking not to read the example, thinking of themselves, this week did not have a problem.

For the next week, we'll learn about Java's input and output streams and file processing, and do some more questions about Java classes and interfaces. Insist on spending more time on the code.

Java Learning Week Fourth