public class BankCustomerDaoImpl implements BankCustomerDao
{
private static BankCustomerDaoImpl bankCustomerDao=new BankCustomerDaoImpl();//为何此处是静态?
private static DaoHelper daoHelper=DaoHelperImpl.getBaseDaoInstance();
private BankCustomerDaoImpl()
{
}
public static BankCustomerDaoImpl getInstance()
{
return bankCustomerDao;
}
...
{
private static BankCustomerDaoImpl bankCustomerDao=new BankCustomerDaoImpl();//为何此处是静态?
private static DaoHelper daoHelper=DaoHelperImpl.getBaseDaoInstance();
private BankCustomerDaoImpl()
{
}
public static BankCustomerDaoImpl getInstance()
{
return bankCustomerDao;
}
...
DAO类本身就是个基础
但是比较难理解
不知道有那位高手有例题