C:\JPadPro\Documents\Ide\Getting Started\jdbcConnect.java:18: cannot resolve symbol
symbol : method getInt (int)
location: class jdbcConnect
id = getInt(1);
^
C:\JPadPro\Documents\Ide\Getting Started\jdbcConnect.java:19: cannot resolve symbol
symbol : method getString (int)
location: class jdbcConnect
gb = getString(2);
^
C:\JPadPro\Documents\Ide\Getting Started\jdbcConnect.java:20: cannot resolve symbol
symbol : method getString (int)
location: class jdbcConnect
big5 = getString(3);
^
symbol : method getInt (int)
location: class jdbcConnect
id = getInt(1);
^
C:\JPadPro\Documents\Ide\Getting Started\jdbcConnect.java:19: cannot resolve symbol
symbol : method getString (int)
location: class jdbcConnect
gb = getString(2);
^
C:\JPadPro\Documents\Ide\Getting Started\jdbcConnect.java:20: cannot resolve symbol
symbol : method getString (int)
location: class jdbcConnect
big5 = getString(3);
^
还有就是在getInt(1);
getString(2);
getString(3);
前都加rs.
它们都是ResultSet对象rs的方法改完应该是
id = rs.getInt(1);
gb = rs.getString(2);
big5 = rs.getString(3);
1).getInt()和getString()本身是ResultSet对象中的方法,如果在这几个方法前不加ResultSet,也就是你的rs.,则程序编译时会认为你自己编写的对象;
2).getInt()中的字段类型必须为数字型,getString()中的字段类型必须为字符型