java 工厂模式，

java 工厂模式，

BeanFactory.java

package two;

public class BeanFactory {

	public JDBCInter createBean(String dbname){
		JDBCInter jdbc = null;
		if("sql".equals(dbname)){
			return new MySQLJDBC();
			
		}else if("mysql".equals(dbname)){
			return new SqlJDBC();
		}
		
		return null;
	}
		
}

BeanFactory01.java

package two;

public class BeanFactory01 {

	public JDBCInter createBean(String dbname){
		JDBCInter jdbc = null;
		try {
			jdbc = (JDBCInter)Class.forName(dbname).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 jdbc;
	}
		
}

JDBCInter.java