try-catch方法中的java返回值
public double calRoomCharges(int cusId)
{
try
{
//Get Rates
String sql="SELECT nights FROM reservation where cus_id ='"+cusId+"'";
pst=conn.prepareStatement(sql);
rs=pst.executeQuery();
int roomRates = 0;
if(!rs.next())
{
//handle no result
}
else
{
roomRates = rs.getInt("nights") ;
}
double tot1 =roomRates;
String totRoom = String.valueOf(tot1);
rc.setText(totRoom);
}
catch(Exception e){}
}
我想从这个方法中得到更多的空间。我该怎么退呢?如果我把return语句放在try-catch块之外,它就不会接受块内计算的值
# 1 楼答案
你可以试试这样的。让我知道这是否有效