[6047] in java-interest
How to check for null ....
daemon@ATHENA.MIT.EDU (Dhaval M Shah)
Mon Mar 18 14:19:46 1996
Date: Mon, 18 Mar 1996 19:17:19 +1100
Reply-To: Java Interest <JAVA-INTEREST@JAVASOFT.COM>
From: Dhaval M Shah <dms03@CS.UOW.EDU.AU>
To: Multiple recipients of list JAVA-INTEREST
<JAVA-INTEREST@JAVASOFT.COM>
To: java-interest@java.sun.com
Cc: owner-java-interest@java.sun.com
Hello Everybody,
I am a student with good 'C' background and trying to learn
java.
I have created a string that depending upon input either has some characters or
has "null" in it. [Or rather the string is null]
My problem is how to check for nullity in java. If the string has "null" and
I use mystring.length() in the hope that it should return 0, java throws
a runtime exception.
When I say System.out.println(mystring); it prints null.
In 'C', I could have done something like this :
if(mystring) /* Just a crude example */
printf("\n string is not null);
else
printf("string is null");
Is there any method (or) a specific way to check for strings with null in it.
Thanks
Dhaval
--
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Dhaval M. Shah
dhaval@cs.uow.edu.au (Home) : +61 42 258519
Dept. of Computer Science
University of Wollongong 2/13 Catherine St., Gwynneville,
NSW 2522 Australia NSW 2500 Australia
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