For instance:
举一反三
- Every instance of an abstract type is an instance of some concrete subtype.
- For instance:
- 定义类的关键字是 ( ) A: Class B: class C: Instance D: instance
- 【单选题】下面的代码实现了设计模式中的()模式 public class A{ private A instance; private A(){} public static Aget Instance{ if(A==null) instance = new A(); return instance; } } A. Factory B. AbstractFactory C. Singleton D. Builder
- Which of the following is an instance of persuasive speaking: