RE: [OT] if don't work?!?!?
From: Massimiliano PASQUALONI
[mailto:[EMAIL PROTECTED]
Subject: if don't work?!?!?
if (Pippo == on) {
Guaranteed to be false.
Pippo = request.getParameter(abilitato);
Pluto = request.getParameter(abilitato);
the if (Pippo == Pluto ) don't work!
Also guaranteed to be false.
You need to learn Java before embarking on writing webapps for any
container. The test you're making is one for object equality, not
content equality. Your expression should be something like:
if (Pippo.equals(on))
- Chuck
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Re: [OT] if don't work?!?!?
No, that is not guaranteed to be false.
For example
Pippo.intern() == Pluto.intern()
should be true.
Caldarale, Charles R schrieb:
From: Massimiliano PASQUALONI
[mailto:[EMAIL PROTECTED]
Subject: if don't work?!?!?
if (Pippo == on) {
Guaranteed to be false.
Pippo = request.getParameter(abilitato);
Pluto = request.getParameter(abilitato);
the if (Pippo == Pluto ) don't work!
Also guaranteed to be false.
You need to learn Java before embarking on writing webapps for any
container. The test you're making is one for object equality, not
content equality. Your expression should be something like:
if (Pippo.equals(on))
- Chuck
THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY
MATERIAL and is thus for use only by the intended recipient. If you
received this in error, please contact the sender and delete the e-mail
and its attachments from all computers.
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Re: OT: if don't work?!?!?
This is not really a Tomcat question, but a matter of Java language
understanding.
Comparators like ==, , =, etc. should only be used with java language
primitive types, such as int, byte, boolean, and NOT with Objects, like
String, as you are, UNLESS you actually wish to test whether the two
things you are comparing are the same object instance. To test whether
two distinct objects represent the same value or entity, use the equals
method. So in your case, you should use:
if (Pippo.equals(on)) { ... }
or
if (Pippo.equals(Pluto)) { ... }
Please respond to Tomcat Users List users@tomcat.apache.org
To: 'Tomcat Users List' users@tomcat.apache.org
cc:
Subject:if don't work?!?!?
Hi guy!
Wat's happen??
If i read an checkrequest post
String Pippo = request.getParameter(abilitato);
out.print(Pippo);
return me= on
If I try to make a condition whit if:
if (Pippo == on) {
}
these don't work
And is'nt the first time,
if I try
Pippo = request.getParameter(abilitato);
Pluto = request.getParameter(abilitato);
the if (Pippo == Pluto ) don't work!
:-(
please, help me!
Massimiliano PASQUALONI
Data Processing S.r.l.
Reparto EDP
S.S. 100 BA-TA Km 18
c/o IL BARICENTRO
torre D
70010 CASAMASSIMA (BA)
RE: [OT] if don't work?!?!?
From: Jost Richstein [mailto:[EMAIL PROTECTED] Subject: Re: [OT] if don't work?!?!? No, that is not guaranteed to be false. For example Pippo.intern() == Pluto.intern() should be true. The above certainly is correct, but is not what the OP coded. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: [OT] if don't work?!?!?
From: Christopher Schultz [mailto:[EMAIL PROTECTED] Subject: Re: [OT] if don't work?!?!? String Pippo = on; if(Pippo == on) System.err.println(Pippo is on, man!); Again, that's not what the OP coded; Pippo was retrieved from the request, not set to a constant. Changing the context of the if statement can certainly changes the result. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
