package org.jzkangta.factorydemo01;interface Car{ public void run(); public void stop();}class Benz implements Car{ public void run(){ System.out.println("Benz开始启动了。。。。。"); } public void stop(){ System.out.println("Benz停车了。。。。。"); }}class Ford implements Car{ public void run(){ System.out.println("Ford开始启动了。。。"); } public void stop(){ System.out.println("Ford停车了。。。。"); }}class Factory{ public static Car getCarInstance(){ return new Ford(); }}public class FactoryDemo01 { public static void main(String[] args) { Car c=Factory.getCarInstance(); c.run(); c.stop(); }}
package org.jzkangta.factorydemo02;interface Car{ public void run(); public void stop();}class Benz implements Car{ public void run(){ System.out.println("Benz开始启动了。。。。。"); } public void stop(){ System.out.println("Benz停车了。。。。。"); }}class Ford implements Car{ public void run(){ System.out.println("Ford开始启动了。。。"); } public void stop(){ System.out.println("Ford停车了。。。。"); }}class Factory{ public static Car getCarInstance(String type){ Car c=null; if("Benz".equals(type)){ c=new Benz(); } if("Ford".equals(type)){ c=new Ford(); } return c; }}public class FactoryDemo02 { public static void main(String[] args) { Car c=Factory.getCarInstance("jzkangta"); if(c!=null){ c.run(); c.stop(); }else{ System.out.println("造不了这种汽车。。。"); } }}
package org.jzkangta.factorydemo03;interface Car{ public void run(); public void stop();}class Benz implements Car{ public void run(){ System.out.println("Benz开始启动了。。。。。"); } public void stop(){ System.out.println("Benz停车了。。。。。"); }}class Ford implements Car{ public void run(){ System.out.println("Ford开始启动了。。。"); } public void stop(){ System.out.println("Ford停车了。。。。"); }}class Toyota implements Car{ public void run(){ System.out.println("Toyota开始启动了。。。"); } public void stop(){ System.out.println("Toyota停车了。。。。"); }}class Factory{ public static Car getCarInstance(String type){ Car c=null; try { c=(Car)Class.forName("org.jzkangta.factorydemo03."+type).newInstance(); } catch (InstantiationException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalAccessException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } return c; }}public class FactoryDemo03 { public static void main(String[] args) { Car c=Factory.getCarInstance("Toyota"); if(c!=null){ c.run(); c.stop(); }else{ System.out.println("造不了这种汽车。。。"); } }}
