Java Array Index Out of Bounds Exception saying that array is smaller than it actually is -


my program comparing 2 strings inside 2 loops. upon running, produces error:exception in thread "main" java.lang.arrayindexoutofboundsexception: 2, though arrays initialized enough space. line of code is:

if(keywords[a].equals(tokenizedstring[b])&&tokenizedstring[a].equals("1"))

where keywords initialized:

string[] keywords={"0","add","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0"};

where tokenizedstring initialized:

string[] tokenizedstring={"0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0"};

why, when run it, saying 2 out of bounds when 2 arrays being used in statement bigger?

the relevant part of code:

import java.util.scanner; import java.util.stringtokenizer;  public class main {     public static void main(string[] args) {         final int keywords = 3;         string[] keywords =                         {"0", "add", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0",                                         "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0",                                         "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0",                                         "0", "0", "0", "0", "0", "0", "0"};         scanner scan = new scanner(system.in);         string[] tokenizedstring =                         {"0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0",                                         "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0",                                         "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0",                                         "0", "0", "0", "0", "0", "0"};         int stringcounter = 1;         string input = scan.nextline();         stringtokenizer st = new stringtokenizer(input, " ");         string answer = null;         while (st.hasmoreelements()) {             answer = (string) st.nextelement();             system.out.println(answer);             tokenizedstring[stringcounter] = answer;             stringcounter++;         }         string[] functions;         functions = new string[10];         functions = testforkeywords(tokenizedstring, keywords, stringcounter, keywords);         int[] numbers = new int[10];         string[] numberss = {"1", "2"};         numbers = testfornumbers(tokenizedstring, numberss, stringcounter, 2);     }      public static int[] testfornumbers(string[] tokenizedstring, string[] keywords, int inputs,                     int numbkeywords) {         int[] functions = new int[inputs + 1];         int funcounter = 0;         (int = 0; <= numbkeywords; a++) {             (int b = 0; b <= inputs; b++) {                 if (keywords[a].equals(tokenizedstring[b]) && tokenizedstring[a].equals("1")) {                     system.out.println("yay");                     functions[funcounter] = 1;                     funcounter++;                 }             }         }         return functions;     } }

you confused value of keywords @ point error occurs.

your error occurs in testfornumbers() have local (method scope) variable keywords passed in argument. if call this, pass in numberss in position.

numberss has 2 members - has indexes 0 , 1 - trying access index 2 indeed throw exception @ runtime


-

Comments

Post a Comment

Popular posts from this blog

facebook - android ACTION_SEND to share with specific application only -

in android application have 4 buttons facebook , viber , telegram , whatsapp , want share different content based on each button. for example if user clicks on viber button want user action_send share content viber only. i found this explains how facebook , twitter seems it's calling specific class name of application don't know applications wanna use except facebook. all android apps have unique id, first have check if these apps installed in user's device , can pass unique id via intent sharing. according below: unique ids different apps : viber : com.viber.voip telegram : org.telegram.messenger whatsapp : com.whatsapp check if these apps installed , if installed send messages through intent. private void sendmessage(context context,string message, string appids) { final boolean isappinstalled =isappavailable(context, appids); if (isappinstalled) { intent myintent = new intent(intent.action_send); myintent.settype("text/p...
Read more

python - Creating a new virtualenv gives a permissions error -

i'm getting following output when running virtualenv newvenv . traceback (most recent call last): file "/usr/local/bin/virtualenv", line 5, in <module> pkg_resources import load_entry_point file "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2727, in <module> add_activation_listener(lambda dist: dist.activate()) file "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 700, in subscribe callback(dist) file "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2727, in <lambda> add_activation_listener(lambda dist: dist.activate()) file "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2227, in activate self.insert_on(path) file "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2334, in insert_on self.check_version_conflict() file "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2373, in check_version_conflict...
Read more

javascript - cocos2d-js draw circle not instantly -

i wondering how draw circles (or other shapes also) not instantly. so far tried drawcircle(args...) in ccdrawnode.js , drawcircle(args...) in cc.drawingprimitivecanvas class, , draw circles popping out instantly on screen. what if want achieve effect circular progressive bar, completes circle based on percentage of initialization? or more generally, if want draw circle respect prolonged period? thinking there drawcircle function elapsed time argument fail find any. or have implement own? thanks suggestions, far out of ideas. i think have implement own. think can achieve update circle drawing on each time update() function called.
Read more