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Try (
A = Integer.parseInt (kob.getArea ());
System.out.print (a);
) Catch (NumberFormatException ex1) (
System.out.print (ex1);
If (ex1.equals ( "") | | ex1 == null) (
String tsql = "select * from crm_areathree where id =" + a;
Rs = stmt.executeQuery (tsql);
)
You do so from out if it is INT has been assigned to a database of the operation if I do so only id = a check that his scope enough ah ~
?
Halo …
Your definition of a try in the outside
Int a = 0
Try (
A =?;
)
Catch () (
)
A method in the whole scope of the applicable
Int a = 0;
Try (
A = Integer.parseInt (kob.getArea ());
System.out.print (a);
) Catch (NumberFormatException ex1) (
System.out.print (ex1);
If (ex1.equals ( "") | | ex1 == null) (
String tsql = "select * from crm_areathree where id =" + a;
Rs = stmt.executeQuery (tsql);
)
Try (
A = Integer.parseInt (kob.getArea ());
System.out.print (a);
If (ex1.equals ( "") | | ex1 == null) (
String tsql = "select * from crm_areathree where id =" + a;
Rs = stmt.executeQuery (tsql);
) Catch (NumberFormatException ex1) (
System.out.print (ex1);
)
Changed so the best
Catch inside write these rare. . . This will not improve code efficiency
Try (
A = Integer.parseInt (kob.getArea ());
System.out.print (a);
) Catch (NumberFormatException ex1) (
System.out.print (ex1);
If (ex1.equals ( "") | | ex1 == null) (
String tsql = "select * from crm_areathree where id =" + a;
Rs = stmt.executeQuery (tsql);
)
======================================
What this messy, so use?
==>
Try (
Int a = Integer.parseInt (kob.getArea ());
/ / System.out.println (a);
String tsql = "select * from crm_areathree where id =" + a;
Rs = stmt.executeQuery (tsql);
) Catch (NumberFormatException ex1) (
Ex1.printStackTrace ();
)
This is in order to fill because of abnormal operating in the database can not be read out when the judgement is not just numbers or strings unusual to use it to control you Xianxiao the issue is resolved ~ ~
Up
Recommendations if (ex1.equals ( "") | | ex1 == null) (
Changed if (ex1 == null | | (ex1.equals (""))
Otherwise mistakes
Ex1 how likely equals ("")?
Niutoubuduimazui ah
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February 28, 2007 | Filed Under Getting Started |