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  • java4android (被客户不断变化的需求“折磨”)

    父类:

    class Printer{
        void open(){
            System.out.print("Open");
        }
        
        void close(){
            System.out.print("close");
        }
        
        void print(String print){
            System.out.print("print-->"+print);
        }
    }

    子类:

    class HPPrinter extends Printer{
        
    }
    class CanonPrinter extends Printer{
        
        void close(){
            this.clean();
            super.close();
        }
        
        void clean(){
            System.out.print("clean");
        }
    }

    主函数:

    class Test{
        public static void main(String args[]){
            int flag = 0;
            
            if(flag == 0){
                HPPrinter hpPrinter = new HPPrinter();
                hpPrinter.open();
                hpPrinter.print("bvc");
                hpPrinter.close();
            }
            else if(flag == 1){
                CanonPrinter canonPriter = new CanonPrinter();
                canonPriter.open();
                canonPriter.print("bvc");
                canonPriter.close();
            
             }
        }
    }
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  • 原文地址:https://www.cnblogs.com/safiri/p/3736115.html
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