工厂模式实例数据分类导出

package shujvdaochu;

public interface Export {
public boolean export(String data);

}

package shujvdaochu;

public class ExportDb implements Export {

	@Override
	public boolean export(String data) {
		
		System.out.println("导出数据"+data+"到数据库");
		return true;
	}

}

package shujvdaochu;

public class ExportTxt implements Export {

	@Override
	public boolean export(String data) {
System.out.println("到处数据"+data+"到文件");
		return false;
	}

}

 

package shujvdaochu;

public abstract class ExportFactory {
public boolean export(String data)
{
	Export api=factoryMethod();
	return api.export(data);
}
protected abstract Export factoryMethod();
}

package shujvdaochu;

public class DbFactory extends ExportFactory {

	@Override
	protected Export factoryMethod() {
	return new ExportDb();
	
	}

}

package shujvdaochu;

public class Txtfactory extends ExportFactory {

	@Override
	protected Export factoryMethod() {
	return new ExportTxt();
	}

}

package shujvdaochu;

public class Test {
public static void main(String args[])
{ExportFactory ef=new DbFactory();
ef.export("蓝精灵");

}
}