Experiment two Java object-oriented programming

Experimental content

1. Initial mastery of unit testing and TDD
2. Understanding and mastering object-oriented three elements: encapsulation, inheritance, polymorphism
3. Initial mastery of UML modeling
4. Familiarity with S.O.L.I.D principles
5. Understanding Design Patterns

Experimental steps Topic One:

(a) Unit testing

Percentile five-point system: If the score is less than 60, turn to "fail" if the score between 60 and 70, turn into "pass" if the score between 70 and 80, turn into "medium" if the result between 80 and 90, turn into "good" if the result between 90 and 100, turn into "excellent" other, turn to "error".

Topic Two:

Study StringBuffer in the way of TDD

Topic Three:

Extend the design pattern example, experience the application of OCP principle and dip principle, understand the design pattern preliminarily

Let the system support the float class and add the test code in the MyDoc class to indicate that it was added correctly.

Topic Four:

Topic Five

Use STARUML to model the code in experiment two, send class diagram, plus number watermark.

Experiment Summary and experience

• Can be designed according to the requirements of the Code, do not waste energy on the code you want;
• The design of the code to consider the problem more comprehensive, not easy to miss out important links;

Psp:

Steps	Time Consuming/min	Percent/%
Demand analysis	10	9
Design	20	18
Code implementation	30	27
Test	20	28
Analysis Summary	30	27

Experiment two Java object-oriented programming