java - replace string between first two occurrence of '&' chars -


how can replace string between first & , next & only:

public class test02 {   public static void main(string[] args) {     string xyz = "&axy=asdsd&ram=2 gb4 gb&asd=sdsd&";      string x =  xyz.replaceall("&ram=.*&", "&ram=8 gb&");      system.out.println(x);     } }

my input - &axy=asdsd&ram=2 gb4 gb&asd=sdsd& output - &axy=asdsd&ram=8 gb&

but want- &axy=asdsd&ram=8 gb&asd=sdsd&

only want change middle part.

i making search filter. if api building query exists love know.

thanks bobble,

this worked... '.?' instead of '.' ..

public class test02 {

public static void main(string[] args) {     string xyz = "&axy=asdsd&ram=2 gb4 gb&asd=sdsd&";      string x =  xyz.replaceall("(&ram=.*?)&", "&ram=8 gb&");      system.out.println(x); }

}

now out put-- &axy=asdsd&ram=8 gb&asd=sdsd&


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