indexoutofboundsexception

Displaying JTable in JFrame

为君一笑 提交于 2019-12-01 10:26:52
What i want to do: I want to list some records of a database. This list should be displayed in a JFrame popup. Description: I have 3 classes: Main.java (runs program) PeopleTableModel.java (holds data, extends AbstractTableModel) PeopleTable.java (holds logic, extends JTable) Why I am getting an ArrayIndexOutOfBoundsException when setting my JFrame to visible? Update: It seems like this error only shows up, when I use my own PeopleTable class. When I assign the table to just a normal JTable, it works. Here is my stack trace I am getting: java.lang.ArrayIndexOutOfBoundsException: 0 >= 0 at java

java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 exception [duplicate]

别说谁变了你拦得住时间么 提交于 2019-12-01 08:15:44
This question already has an answer here: What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it? 25 answers I am getting the error java.lang.IndexOutOfBoundsException: Index: 0, Size: 0. public Collection<AdDistribution> getAdDistribution(byte srch, byte cont) throws IndexOutOfBoundsException { List<AdDistribution> mediums = new ArrayList<>(); List<AdDistribution> adDistribution = new ArrayList<>(); adDistribution.add(AdDistribution.SEARCH); adDistribution.add(AdDistribution.CONTENT); if (adDistribution.isEmpty()) { return null; } if (srch == 0 && cont == 0) { mediums

java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 exception [duplicate]

偶尔善良 提交于 2019-12-01 05:27:34
问题 This question already has answers here : What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it? (25 answers) Closed 3 years ago . I am getting the error java.lang.IndexOutOfBoundsException: Index: 0, Size: 0. public Collection<AdDistribution> getAdDistribution(byte srch, byte cont) throws IndexOutOfBoundsException { List<AdDistribution> mediums = new ArrayList<>(); List<AdDistribution> adDistribution = new ArrayList<>(); adDistribution.add(AdDistribution.SEARCH);

Removing elements on ArrayList throw an IndexOutOfBoundsException on ArrayAdapter

自古美人都是妖i 提交于 2019-12-01 00:56:34
I'm developing an Android 3.1 application. I have my custom ArrayAdapter. I want to show a list of names in a ListView. These names are forms that could be download and save it locally. When user download and save one or more, I call updateFormsNotDownloaded() . But when I do that I get an IndexOutOfBoundsException. And I think this problem is because I call notifyDataSetChanged() . Look at my code: public class FormAdapter extends ArrayAdapter<Form> { private Context context; private int layoutResourceId; private List<Form> forms; private ArrayList<Integer> checkedItemsPosition; private

Android List View Array Index Out Of Bounds Exception - No clues?

不羁的心 提交于 2019-11-30 22:42:55
I have an app which loads a listview when opened, however I am getting an Array Index Out Of Bounds Exception, with no clues as to where the problem lies. It is trying to access index=-1 somewhere, but I have no idea where. The app loads Homework information from a database, puts them into separate Homework objects in an ArrayList and loads it into the ListView from there. I really don't know where the exception is coming from, I have checked all my code. There is only 1 homework in the list, however the app refuses to open and force closes as soon as I try to open it. Here is the LogCat

Is it OK to use exceptions to check for array boundaries?

可紊 提交于 2019-11-30 21:35:13
I want to check whether the given coordinates are withing an array or not. public boolean checkBounds(int x, int y) { try { Object val = array[x][y]; return true; } catch (ArrayIndexOutOfBoundsException e) { return false; } } Can I do it like that? Is it an efficient way to do it? What happens when we use exceptions to perform boundary checks? Using exceptions for handling operations like null checking, bounds checking, file existance checking introduces a lot of overhead whenever the exception is thrown. What you would have done if you simply checked the bounds: check the size of an array

Removing elements on ArrayList throw an IndexOutOfBoundsException on ArrayAdapter

你。 提交于 2019-11-30 20:39:20
问题 I'm developing an Android 3.1 application. I have my custom ArrayAdapter. I want to show a list of names in a ListView. These names are forms that could be download and save it locally. When user download and save one or more, I call updateFormsNotDownloaded() . But when I do that I get an IndexOutOfBoundsException. And I think this problem is because I call notifyDataSetChanged() . Look at my code: public class FormAdapter extends ArrayAdapter<Form> { private Context context; private int

Is it OK to use exceptions to check for array boundaries?

别等时光非礼了梦想. 提交于 2019-11-30 17:44:24
问题 I want to check whether the given coordinates are withing an array or not. public boolean checkBounds(int x, int y) { try { Object val = array[x][y]; return true; } catch (ArrayIndexOutOfBoundsException e) { return false; } } Can I do it like that? Is it an efficient way to do it? 回答1: What happens when we use exceptions to perform boundary checks? Using exceptions for handling operations like null checking, bounds checking, file existance checking introduces a lot of overhead whenever the

Java ArrayIndexOutOfBound

懵懂的女人 提交于 2019-11-29 18:26:52
I am currently working on a student project and everytime I get this error: ArrayIndexOutOfBoundsException: 7 . Can someone see where it occurs and how I can fix it? I know the code looks messy but its just for me. The size of the array is 7. public void actionPerformed(ActionEvent e) { if(c >= Playerlist.length) { if(c >= wuerfelsummen.length) { c = 0; } } if(wuerfelsummen[c] == null) { c++; } wuerfelsummen[c].setText(lbl_summe.getText()); pot.setCurrentPlayer(Playerlist[c]); if(c >= Playerlist.length) { c = 0; } else { c++; //ARRAY_INDEX_OUT_OF_BOUNDS ERROR !!!!!!!!!!!!!!!!!!!! while

Index out of bounds when create new thread with parameters?

元气小坏坏 提交于 2019-11-29 17:07:01
I'm working on my project about Bakery Algorithm but i don't have any demo of that Algorithm in C# . Because of that situation i've converted some java code that i found on Wikipedia . But Anyway , it doesn't seem to work ! Updated : Here's my full-working code ( old code include in "//" comment ) namespace BakeryAlgorithm { class Program { static int threads = 10; static string x = ""; static int count = 0; static int[] ticket = new int[threads]; static bool[] entering = new bool[threads]; public static void doLock(int pid) { entering[pid] = true; int max = 0; for (int i = 0; i < threads; i++