How to replace a particular string with value in java -

edit :

goal : http://localhost:8080/api/upload/form/test/test

is possible have thing `{a-b, a-b..0-9}` kind of pattern , match them , replace value. 

i have following string

http://localhost:8080/api/upload/form/{uploadtype}/{uploadname} 

there can no of strings {uploadtype}/{uploadname}.

how replace them values in java?

[edited] apparently don't know substitutions you'll looking for, or don't have reasonable finite map of them. in case:

pattern subst_patt = pattern.compile("\\{(\\w+)\\}"); stringbuilder sb = new stringbuilder( template); matcher m = subst_patt.matcher( sb); int index = 0; while (m.find( index)) {     string subst = m.group( 1);     index = m.start();     //     string replacement = "replacement";       // .. lookup subst -> replacement here     sb.replace( index, m.end(), replacement);     index = index + replacement.length(); } 

look, i'm expecting +1 now.

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[simpler approach] string.replace() 'simple replace' & easy use purposes; if want regexes can use string.replaceall().

for multiple dynamic replacements:

public string substitutestr (string template, map<string,string> substs) {     string result = template;     (map.entry<string,string> subst : substs.entryset()) {         string pattern = "{"+subst.getkey()+"}";         result = result.replace( pattern, subst.getvalue());     }     return result; } 

that's quick & easy approach, start with.