摘要： 本代码拷贝自《Java编程思想第四版》接口一章。//: interfaces/classprocessor/Apply.javapackage interfaces;import java.util.*;class Processor { public String name() { return getClass().getSimpleName(); } Object process(Object input) { return input; }} class Upcase extends Processor { String process(Object input) ... 阅读全文

摘要： 本代码拷贝自《Java编程思想第四版》多态章节。class Meal{ Meal() { System.out.println("Meal()");}}class Bread{ Bread() { System.out.println("Bread()");}}class Cheese{ Cheese() { System.out.println("Cheese()");}}class Lettuce{ Lettuce() { System.out.println("Luttuce()");}}class Lunc 阅读全文