本文详细介绍了简单工厂模式的核心概念，包括接口类、实现类、工厂类及其作用，通过示例代码展示了如何选择并创建特定的实现类。重点在于理解简单工厂模式在选择实现类时的功能与机制。
packagecom.jerry.design.simpleFactory.imp;
/**
*
*@authorjerry
*
*/
publicinterfaceinterfaceTest {
publicvoidtest(String name);
}
实现类A：
packagecom.jerry.design.simpleFactory.impl;
importcom.jerry.design.simpleFactory.imp.interfaceTest;
/**
*
*@authorjerry
*
*/
publicclassImplAimplementsinterfaceTest {
publicvoidtest(String name){
System.out.println(" my ImplA name is："+name);
}
}
实现类B：
packagecom.jerry.design.simpleFactory.impl;
importcom.jerry.design.simpleFactory.imp.interfaceTest;
/**
*
*@authorjerry
*
*/
publicclassImplBimplementsinterfaceTest {
publicvoidtest(String name){
System.out.println(" my ImplB name is："+name);
}
}
工厂类：
packagecom.jerry.design.simpleFactory.factory;
importcom.jerry.design.simpleFactory.imp.interfaceTest;
importcom.jerry.design.simpleFactory.impl.ImplA;
importcom.jerry.design.simpleFactory.impl.ImplB;
publicclassFactory {
publicstaticinterfaceTest createImp(inttype){
interfaceTest test =null;
if(type==1){
test = (interfaceTest)newImplA();
}elseif(type==2){
test = (interfaceTest)newImplB();
}
returntest;
}
}
测试类：
packagecom.jerry.design.simpleFactory.factory;
importcom.jerry.design.simpleFactory.imp.interfaceTest;
publicclassTest {
publicstaticvoidmain(String[] args) {
interfaceTest test = Factory.createImp(1);
test.test(" i am jerry!");// my ImplA name is： i amjerry!
test = Factory.createImp(2);
test.test(" i am jerry!");// my ImplB name is： i amjerry!
}
}
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