Java Scanner delimiter on values of nextLine -

i have file in .dat format. here sample

||= (n ) =|| 1|| 0.938 || --- || 0.5 || (****)|| 0.5 || 0 || 0 || 0 || 0.700 || (p)=2212, (n)=2112 ||

||= (\delta ) =|| 2|| 1.232 || 0.118 || 1.5 || (****)|| 1.5 || 0 || 0 || 3 || 1.076 || (\delta^{++})=2224, (\delta^+)=2214, (\delta^0)=2114, (\delta^-)=1114 ||

||= (p_{11}(1440) ) =|| 3|| 1.462 || 0.391 || 0.5 || (****)|| 0.5 || 0 || 0 || 3 || 1.076 || 202212, 202112 ||

||= (s_{11}(1535) ) =|| 4|| 1.534 || 0.151 || 0.5 || ( ***)|| 0.5 || 0 || 0 || 3 || 1.076 || 102212, 102112 ||

i trying use scanner read file , delimit line "||" , send , arraylist future processing. here sample of code use delimiter

string file = "data.dat"; scanner s = null; try {     s = new scanner(new file(file)).usedelimiter("\\|\\|"); //here use of delimiter      arraylist<string> list = new arraylist<string>();     while (s.hasnextline()) {   //notice using hasnextline because each line must unique create hashmap          list.add(s.nextline());     }     s.close();     (string string : list) {  //lets print out values of list         system.out.println(string);     } } catch (filenotfoundexception e) {     // todo auto-generated catch block     e.printstacktrace(); }  

but output still has values of delimiter, i.e. here output:

||= (n ) =|| 1|| 0.938 || --- || 0.5 || (****)|| 0.5 || 0 || 0 || 0 || 0.700 || (p)=2212, (n)=2112 ||

||= (\delta ) =|| 2|| 1.232 || 0.118 || 1.5 || (****)|| 1.5 || 0 || 0 || 3 || 1.076 || (\delta^{++})=2224, (\delta^+)=2214, (\delta^0)=2114, (\delta^-)=1114 ||

||= (p_{11}(1440) ) =|| 3|| 1.462 || 0.391 || 0.5 || (****)|| 0.5 || 0 || 0 || 3 || 1.076 || 202212, 202112 ||

||= (s_{11}(1535) ) =|| 4|| 1.534 || 0.151 || 0.5 || ( ***)|| 0.5 || 0 || 0 || 3 || 1.076 || 102212, 102112 ||

i have searched , found no answer helped. seeing warning "resource leak: '' never closed" line

s = new scanner(new file(file)).usedelimiter("\\|\\|"); 

which disappears if line broken into

s = new scanner(new file(file)); s.usedelimiter("\\|\\|"); 

any appreciated.

you don't need use backslash escape. instead of \\|\\| delimiter, split string after it's read file.

string file = "data.dat"; scanner s = null; try {     s = new scanner(new file(file)); //no more delimiter. it's not needed     arraylist<string> list = new arraylist<string>();     while (s.hasnextline()) {          string[] strings = s.nextline().split("[||]");         (int = 0; < strings.length; i++) {             list.add(strings[i]);            }     }     s.close();     (string string : list) {  //lets print out values of list         system.out.println(string);     } } catch (filenotfoundexception e) {     // todo auto-generated catch block     e.printstacktrace(); }  

this should fix it.