indexoutofboundsexception

ArrayList.add throws ArrayIndexOutOfBoundsException [duplicate]

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This question already has answers here : What are the possible problems caused by adding elements to unsynchronized ArrayList's object by multiple threads simultaneously? (4 answers) What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it? (25 answers) I am trying to add a object to a ArrayList and its throwing ArrayIndexOutOfBoundsException Following is the code private void populateInboxResultHolder(List inboxErrors){ inboxList = new ArrayList(); try{ inboxHolder = new InboxResultHolder(); //Lots of Code inboxList.add(inboxHolder); }catch(Exception e){ e

Index was outside the bounds of the array c#

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问题 I have an array with size[5] . I added 5 values into this array and then removed the values. Now my array have only one value. If I add another value to this array it shows the error Index was outside the bounds of the array . 回答1: If you have an array of size 5 you can add values 0 to 4 (arrays start at index 0): object[] arr = new object[5]; arr[0] = new object(); arr[4] = new object(); // this will give your Index was outside the bounds of the array exception: arr[5] = new object(); 来源：

IndexOutOfBoundsException with Android ArrayList

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问题 I've got a very annoying problem with some code throwing an IndexOutOfBoundsException and I really cannot understand why. The logcat points to the "addTimetableItem" of the following code which ill explain more on: if(sortedFridayTimes.size()>0){ insertDay("Friday"); for(int i=1; i<sortedFridayTimes.size()+1;i++){ addTimetableItem(sortedFridayTimes.get(i)); } } "sortedFridayTimes" is an ArrayList containing my own "Timetable Entry" objects which I have sorted into order already. First the

(Game of Life) How to loop through outer layer of a matrix without checking outside of it, simultaneously checking for neighbors?

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问题 Each point in the matrix represents a cell, living or dead. I have to count how many ALIVE neighbors each cell has. I have a function that does the job, but it checks for cells outside its boundary.I don't know how I can simultaneously check for neighbors and keep track of edges without doing a massive amount of if-else statements. void Neighbours(int rows, int cols, cell world[rows][cols], int neighbors[rows][cols]) { //Loop through each cell in the matrix. for(int rCell = 0; rCell < rows;

ArrayOutOfBoundsException on Bean creation while using Java 8 constructs

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I am getting an ArrayIndexOutOfBoundsException on service start up (Bean creation) when i use Java 8 features. Java 8 has been set up and has been working. The code compiles correctly. On service start, the service fails to listen to port as the beans don't get created. When i change the code (remove java 8 constructs) the service starts and everything works fine. This is the code i am using (the working code for which the service starts): for (Item itemObject : response) { if (itemObject.hasId()) { idList.add(String.valueOf(itemObject.Id()); } } Same code using Java 8 constructs: response

ArrayList: IndexOutOfBounds exception issue

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I'm making a program to find prime numbers. I'm storing the prime numbers and all positive integers (right now till 100) in two ArrayList<Integer> . Here's the code: import java.util.ArrayList; public class PrimeNumbers { static ArrayList<Integer> num = new ArrayList<Integer>(); static ArrayList<Integer> prime = new ArrayList<Integer>(); public static void main(String[] args) { prime.add(2); prime.add(3); prime.add(5); for (int z = 1; z<=100; z++){ num.add(z); } outer: for (int a = 1; a <=num.size(); a++){ inner: for (int b = 1; b <=prime.size(); b++){ if (num.get(a)%prime.get(b) != 0){//line

Why is my int[] array loop out of bounds?

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问题 Warning: I am very new to Java and programming in general. I'll try to be as clear as possible. I am attempting to take a simple integer ( inputnumber ), convert it to a string ( temp ), create a new int[] array ( numberarray ), and loop through this int[] array, starting from the last digit, and print out the name of the digit. I am rather sure that the conversion from integer to String to int[] array was functional due to Eclipse debugging, but am stumped as to why I am getting an

Cursor index out of bound exception on listview cllick event

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I am performing a sqlite database operation on click event of listview as shown below: ListView lv1 = (ListView) findViewById(R.id.listView1); lv1.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { String out = arg0.getItemAtPosition(arg2).toString(); SQLiteDatabase db = openOrCreateDatabase("mynotedb", MODE_PRIVATE, null); String sql = "select description from notecont where title='"+out+"'"; Cursor c1 = db.rawQuery(sql, null); int n = c1.getColumnIndex("description"); data = c1.getString(n); if(data.equals("")) {

(Game of Life) How to loop through outer layer of a matrix without checking outside of it, simultaneously checking for neighbors?

阅读更多关于 (Game of Life) How to loop through outer layer of a matrix without checking outside of it, simultaneously checking for neighbors?

Each point in the matrix represents a cell, living or dead. I have to count how many ALIVE neighbors each cell has. I have a function that does the job, but it checks for cells outside its boundary.I don't know how I can simultaneously check for neighbors and keep track of edges without doing a massive amount of if-else statements. void Neighbours(int rows, int cols, cell world[rows][cols], int neighbors[rows][cols]) { //Loop through each cell in the matrix. for(int rCell = 0; rCell < rows; rCell++){ for(int cCell = 0; cCell < cols; cCell++) { //Reset neighbor count for each cell. neighbors

IndexOutOfBoundException on filtering SimpleAdapter

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问题 I sub classed SimpleAdapter to add some extra functionality to it, like changing background color, custom views and filtering. The background thing is working out great but the filter isn't. If I use the SimpleFilter provided by the adapter there is no problem at all, so I copied the methods from the source and put them into my adapter. Although I didn't touch anything I'll get a IndexOutOfBoundsException when typing in the search term. Usually on the second or third character. I copied the