In my application I am trying to make breadcrumbs using StringBuilder
Suppose this is the string :
String1>String2>String3>String4>String5>
Now I want to remove String5>
and I want string like this:
String1>String2>String3>String4>
How can I do this?
Please help!!
you can use regex \\\\w+>$
\\\\w+
mean match [a-zA-Z0-9_]
>$
match >
character where $
mean at the end
String s = "String1>String2>String3>String4>String5>";
String s2 = s.replaceAll("\\w+>$","");
System.out.println(s2);
Output :
String1>String2>String3>String4>
Note : To avoid _
use
String s2 = s.replaceAll("[a-zA-Z\\d]+>$","");
Just in case if you have data with some special characters like
String s = "String1>Stri$#$ng2>String3>Stri#$$#ng4>St$#:/|ring5>";
then above solution won't work so you can use
String s2 = s.replaceAll("[^>]+>$","");
// s2 will be = String1>Stri$#$ng2>String3>Stri#$$#ng4>
[^>]+
: ^
inside []
works as negation mean match everything except >
character
Split string by > and then apply for loop on the array. match string by position. if match then delete otherwise add to new stringBuilder.
You can use combination of lastIndexOf and substring().
Example:
String oldValue = "String1>String2>String3>String4>String5>";
int lastIndex = oldValue.lastIndexOf('>', oldValue.length() - 2);
String newValue = oldValue.substring(0, lastIndex + 1);
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