indexoutofboundsexception

I've made this code to convert whole base 10 numbers into binary. The code I believe is everything that it needs to be but I can't get me ArrayLists to work. I've spent a few hours on this site and other trying countless changes to no avail. I've gotten the code to compile without and errors but as soon as I enter an int the program crashes. Here is the code: import java.util.Scanner; import java.util.ArrayList; public class BinaryConverter { public static void main(String[] args) { Scanner in = new Scanner(System.in); ArrayList<Integer> binary = new ArrayList<Integer>(); int a = in.nextInt();

I have a persistend Book Class with the following properties PropertyName -> HibernateMappingType -> JavaType id -> long -> long title -> text -> String author -> string -> String systemId -> long -> long status -> boolean -> boolean fullClassification -> string -> string And my table description looks like this: So far everything seems good, but when I try to fetch all the values in the table I get the following Exception Message: 20:04:43,832 TRACE BasicExtractor:61 - extracted value ([classifi1_1_0_] : [BIGINT]) - [11] 20:04:43,832 TRACE BasicExtractor:61 - extracted value ([collecti1_2_1_]

I wrote this piece of code and was expecting a segmentation fault quicly, but it seems I am allowed to access pieces of memory I shouldn't be able to. #include<stdio.h> int main() { int tab[1]; tab[0]=42; int i; //Expecting Seg Fault from i==1... for(i=0;;i++) { printf("%d \t %d \n", i, tab[i]); } return 0; } I am compiling using: gcc -Wall -Wextra my_code.c -o segfault && ./segfault Upon execution, variable i reaches values of order 1000 before I get my Segmentation Fault. My question is: Why am I able to read tab so far ? PS: Using #include <stdlib.h> and declaring int * tab = (int*)malloc

In my application I try to load contents from a url, store them in a mutable array and show them in a table view. But I can't get it working, because every time I run the app this error appears: *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayI objectAtIndex:]: index 1 beyond bounds [0 .. 0]' *** First throw call stack: (0x34dd088f 0x36d9e259 0x34d2823d 0x316e562f 0x315f09a9 0x313c0c5d 0x313c1b95 0x313c1ae7 0x313c16c3 0xa5cfb 0x33623ec7 0x35387a09 0x35390051 0x33622965 0xa4dc1 0x313a8e33 0x313cd629 0x31391d7d 0x314544dd 0x3139a55d 0x3139a579 0x3139a40b

I created a method that reads data from a database and puts it in a String array. Android Studio doesn't give syntax errors but when i launch my app the log says: 03-19 16:31:20.938 2518-2518/com.mms.dailypill E/AndroidRuntime﹕ FATAL EXCEPTION: main Process: com.mms.dailypill, PID: 2518 java.lang.ArrayIndexOutOfBoundsException: length=0; index=0 at com.mms.dailypill.DBManager.getMedicines(DBManager.java:56) The method code is: public String[] getMedicines() { SQLiteDatabase db = dbManager.getWritableDatabase(); String[] columns = {dbManager.getName(), dbManager.getFormat(), dbManager.getAmount

I get exception Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 1, Size: 0 for the below code. But couldn't understand why. public class App { public static void main(String[] args) { ArrayList<String> s = new ArrayList<>(); //Set index deliberately as 1 (not zero) s.add(1,"Elephant"); System.out.println(s.size()); } } Update I can make it work, but I am trying to understand the concepts, so I changed declaration to below but didnt work either. ArrayList<String> s = new ArrayList<>(10) ArrayList index starts from 0(Zero) Your array list size is 0, and you are adding

vector< vector<int> > resizeVector(vector< vector<int> > m) { vector< vector<int> > newMatrix; int i,j; for (i = 0; i < m[i].size(); i++) { for(j = 0; j < m[j].size(); j++) { newMatrix[i][j] = m[i][j]; } } return (newMatrix); } I am making a program that will do a whole lot of matrix manipulation, and this section is crashing and I don't exactly know why. I have narrowed it down to the line: newMatrix[i][j] = m[i][j]; It crashes right here, and I am not sure why. In addition to what @Saurav posted, newMatrix is empty so you cannot assign values to newMatrix[i][j] . You can fix this by

This question already has an answer here: What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it? 24 answers So the error message is this: Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.rangeCheck(Unknown Source) at java.util.ArrayList.get(Unknown Source) at FcfsScheduler.sortArrival(FcfsScheduler.java:77) at FcfsScheduler.computeSchedule(FcfsScheduler.java:30) at ScheduleDisks.main(ScheduleDisks.java:33) with my code as public void sortArrival(List<Request> r) { int pointer = 0; int sProof = 0; while(true) { if