oracleora-各种常见java.sql.SQLException归纳java.sql.SQLException错误！ORA-00904:--invalidcolumnname无效列名ORA-00942:--tableorviewdoesnotexist表或者视图不存在ORA-01400:--cannotinsertNULLinto()不能将空值插入ORA-00936:--缺少表达式ORA-0...

iphone小小总结iphone开发笔记退回输入键盘-(BOOL)textFieldShouldReturn:(id)textField{[textFieldresignFirstResponder];}CGRectCGRectframe=CGRectMake(origin.x,origin.y,size.width,size.height)；矩形NSStringFromCGRect(someCG...