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java_JAVA常用设计模式.pdf

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Java Lesson1 Factory- ., .., . Factory- MM,MM ,,MM, "".Factory Factory- publicclassFactory{publicstaticSamplecreator(int which){//getClassSample.if (which==1)returnnewSampleA();elseif(which==2)return newSampleB();}} FACTORYMETHOD- , ,,, . FACTORYMETHOD- MM,MM, ,FactoryMethod,MM, "",,MM. FACTORYMETHOD- publicabstractclassFactory{publicabstractSample creator();publicabstractSample2creator(Stringname);} publicclassSimpleFactoryextendsFactory{publicSample creator(){……returnnewSampleA}publicSample2 creator(Stringname){……returnnewSample2A}}public classBombFactoryextendsFactory{publicSample creator(){……returnnewSampleB}publicSample2 creator(Stringname){……returnnewSample2B}} BuilderBuilder- , . ,. . BuilderBuilder- MM"",MM, ,, ,MM," ",MM,""builder. () BuilderBuilder- publicinterfaceBuilder{//A voidbuildPartA();//Bvoid buildPartB();//Cvoid buildPartC();//()// ,Director. //ProductgetResult();}public classDirector{privateBuilderbuilder;public Director(Builderbuilder){this.builder=builder;} //partApartBpartC// publicvoidconstruct() {builder.buildPartA();builder.buildPartB(); builder.buildPartC();}} PROTOTYPEPROTOTYPE- ,