1 简单工厂模式-优快云博客

本文介绍了一个使用Java实现的操作工厂设计模式案例，该工厂能够根据不同运算符创建对应的运算对象，如加、减、乘、除等。此外还阐述了聚合与合成（组合）的概念区别。

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public class OperationFactory {
    public static Operation createOperate(String operate) {
        Operation oper = null;
        switch (operate) {
            case "+":
                oper = new OperationAdd();
                break;
            case "-":
                oper = new OperationSub();
                break;
            case "*":
                oper = new OperationMul();
                break;
            case "/":
                oper = new OperationDiv();
                break;
        }
        return oper;
    }
}

 
 
 
 
 
 
public class OperationFactory {
    public static Operation createOperate(String operate) {
        Operation oper = null;
        switch (operate) {
            case "+":
                oper = new OperationAdd();
                break;
            case "-":
                oper = new OperationSub();
                break;
            case "*":
                oper = new OperationMul();
                break;
            case "/":
                oper = new OperationDiv();
                break;
        }
        return oper;
    }
}
 
 