设计模式——用Java实现工厂模式

简单工厂模式：工厂模式的UML图：核心代码：（UI界面上的按钮事件，主要是switch....case语句的使用）

public void actionPerformed(ActionEvent e) {//添加button时间，根据不同的选择，显示不同的内容String comboText = comboBox.getSelectedItem().toString();switch(comboText){case "DriverInsurance":DriverInsurance insurance = new DriverInsurance();textField.setText(insurance.getString());break;case "PersonInjur":PersonInjur insurance1 = new PersonInjur();textField.setText(insurance1.getString());break;case "CarInjur":CarInjur insurance2 = new CarInjur();textField.setText(insurance2.getString());break;case "Comprehensive":Comprehensive insurance3 = new Comprehensive();textField.setText(insurance3.getString());break;}}

其中一个工厂类：package simplefactory;public class DriverInsurance {private String str;public DriverInsurance(){this.str = "驾驶员伤害险";}public String getString(){return this.str;}}

工厂模式：

核心代码：工厂接口：

package factory;public interface AutoInsurance {abstract String getInfo();}

消费者接口：

package factory;public interface PolicyProducer {public AutoInsurance getInsurObj();}

工厂类：

package factory;public class BodyInjur implements AutoInsurance{private String description;public String getInfo(){this.description = "BodyInjur";return description;}}

消费者类：

package factory;public class BodyPolicy implements PolicyProducer{public AutoInsurance getInsurObj(){return new BodyInjur();}}