pattern match a question mark

[basm101]

hello,

I am trying to split a string on a question mark - obviously this is a special character, but using a backslash to cope with this does not seem to work.

String loc="firstpart?secondpart";
String[] l = loc.split ("/?");
String loc = l[0];

loc does not end up as "firstpart" which is what I am after.

Please help !

basm101

[r035198x]

hello,

I am trying to split a string on a question mark - obviously this is a special character, but using a backslash to cope with this does not seem to work.

String loc="firstpart?secondpart";
String[] l = loc.split ("/?");
String loc = l[0];

loc does not end up as "firstpart" which is what I am after.

Please help !

basm101

You escape special characters using the backslash \.Hoever, the backslash character is itself a special character so you need to escape it as well. Your code thus should be

loc.split("\\?");

[MarshMallow]

Take also a look at some useful methods defined in java.util.StringTokenizer
for example

boolean hasMoreTokens()
          Tests if there are more tokens available from this tokenizer's string.
String     nextToken() 
          Returns the next token from this string tokenizer.
 

with these 2 methods you can manage your temporary results.

[r035198x]

Take also a look at some useful methods defined in java.util.StringTokenizer
for example

boolean hasMoreTokens()
          Tests if there are more tokens available from this tokenizer's string.
String     nextToken() 
          Returns the next token from this string tokenizer.
 

with these 2 methods you can manage your temporary results.

I wouldn't use it.
Read the API specs for it here.

StringTokenizer is a legacy class that is retained for compatibility reasons although its use is discouraged in new code. It is recommended that anyone seeking this functionality use the splitString or the java.util.regex package instead.

[basm101]

loc.split("\\?");
 

worked a treat. Thanks !

basm101

[r035198x]

loc.split("\\?");
 

worked a treat. Thanks !

basm101

I hope you also got the concept.
Try to match \ itself and see what you need to use.