The method add(String) is undefined for the type String












0














ArrayList<String> indirizzi = new ArrayList<String>();
for(int i=0; i<n; i++) {
String ind = in.nextLine();
indirizzi.get(i).add(ind);
}



The method add(String) is undefined for the type String.




This program gives me the above error.



I don't understand why.










share|improve this question





























    0














    ArrayList<String> indirizzi = new ArrayList<String>();
    for(int i=0; i<n; i++) {
    String ind = in.nextLine();
    indirizzi.get(i).add(ind);
    }



    The method add(String) is undefined for the type String.




    This program gives me the above error.



    I don't understand why.










    share|improve this question



























      0












      0








      0







      ArrayList<String> indirizzi = new ArrayList<String>();
      for(int i=0; i<n; i++) {
      String ind = in.nextLine();
      indirizzi.get(i).add(ind);
      }



      The method add(String) is undefined for the type String.




      This program gives me the above error.



      I don't understand why.










      share|improve this question















      ArrayList<String> indirizzi = new ArrayList<String>();
      for(int i=0; i<n; i++) {
      String ind = in.nextLine();
      indirizzi.get(i).add(ind);
      }



      The method add(String) is undefined for the type String.




      This program gives me the above error.



      I don't understand why.







      java






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 11 at 22:59









      GBlodgett

      9,21641633




      9,21641633










      asked Nov 11 at 22:50









      user10610048

      676




      676
























          1 Answer
          1






          active

          oldest

          votes


















          5














          get() returns a String in this case and then you call add() on the String returned by get(). The String class does not have an add() method, hence the undefined for type String error. I believe you simply wanted:



          indirizzi.add(ind);


          Which will add the user input to the List.



          If you want to add at a specific index then use the set() method:



          indirizzi.set(i, ind);


          Which will set ind to the i'th index of indirizzi






          share|improve this answer























          • yeah but I wanted to add the string in that i position of the arraylist
            – user10610048
            Nov 11 at 22:53












          • @user10610048 add() adds the element to the end of the list so if the List is empty, then it will already be setting the elements to the ith position. If not then check my edit about the set() method
            – GBlodgett
            Nov 11 at 22:55











          Your Answer






          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "1"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53254024%2fthe-method-addstring-is-undefined-for-the-type-string%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          5














          get() returns a String in this case and then you call add() on the String returned by get(). The String class does not have an add() method, hence the undefined for type String error. I believe you simply wanted:



          indirizzi.add(ind);


          Which will add the user input to the List.



          If you want to add at a specific index then use the set() method:



          indirizzi.set(i, ind);


          Which will set ind to the i'th index of indirizzi






          share|improve this answer























          • yeah but I wanted to add the string in that i position of the arraylist
            – user10610048
            Nov 11 at 22:53












          • @user10610048 add() adds the element to the end of the list so if the List is empty, then it will already be setting the elements to the ith position. If not then check my edit about the set() method
            – GBlodgett
            Nov 11 at 22:55
















          5














          get() returns a String in this case and then you call add() on the String returned by get(). The String class does not have an add() method, hence the undefined for type String error. I believe you simply wanted:



          indirizzi.add(ind);


          Which will add the user input to the List.



          If you want to add at a specific index then use the set() method:



          indirizzi.set(i, ind);


          Which will set ind to the i'th index of indirizzi






          share|improve this answer























          • yeah but I wanted to add the string in that i position of the arraylist
            – user10610048
            Nov 11 at 22:53












          • @user10610048 add() adds the element to the end of the list so if the List is empty, then it will already be setting the elements to the ith position. If not then check my edit about the set() method
            – GBlodgett
            Nov 11 at 22:55














          5












          5








          5






          get() returns a String in this case and then you call add() on the String returned by get(). The String class does not have an add() method, hence the undefined for type String error. I believe you simply wanted:



          indirizzi.add(ind);


          Which will add the user input to the List.



          If you want to add at a specific index then use the set() method:



          indirizzi.set(i, ind);


          Which will set ind to the i'th index of indirizzi






          share|improve this answer














          get() returns a String in this case and then you call add() on the String returned by get(). The String class does not have an add() method, hence the undefined for type String error. I believe you simply wanted:



          indirizzi.add(ind);


          Which will add the user input to the List.



          If you want to add at a specific index then use the set() method:



          indirizzi.set(i, ind);


          Which will set ind to the i'th index of indirizzi







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Nov 11 at 22:54

























          answered Nov 11 at 22:51









          GBlodgett

          9,21641633




          9,21641633












          • yeah but I wanted to add the string in that i position of the arraylist
            – user10610048
            Nov 11 at 22:53












          • @user10610048 add() adds the element to the end of the list so if the List is empty, then it will already be setting the elements to the ith position. If not then check my edit about the set() method
            – GBlodgett
            Nov 11 at 22:55


















          • yeah but I wanted to add the string in that i position of the arraylist
            – user10610048
            Nov 11 at 22:53












          • @user10610048 add() adds the element to the end of the list so if the List is empty, then it will already be setting the elements to the ith position. If not then check my edit about the set() method
            – GBlodgett
            Nov 11 at 22:55
















          yeah but I wanted to add the string in that i position of the arraylist
          – user10610048
          Nov 11 at 22:53






          yeah but I wanted to add the string in that i position of the arraylist
          – user10610048
          Nov 11 at 22:53














          @user10610048 add() adds the element to the end of the list so if the List is empty, then it will already be setting the elements to the ith position. If not then check my edit about the set() method
          – GBlodgett
          Nov 11 at 22:55




          @user10610048 add() adds the element to the end of the list so if the List is empty, then it will already be setting the elements to the ith position. If not then check my edit about the set() method
          – GBlodgett
          Nov 11 at 22:55


















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Stack Overflow!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.





          Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


          Please pay close attention to the following guidance:


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53254024%2fthe-method-addstring-is-undefined-for-the-type-string%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          Full-time equivalent

          さくらももこ

          13 indicted, 8 arrested in Calif. drug cartel investigation