Sort And Match Items In A Collection Of Arrays - Index Out Of Bounds

Apr 8, 2015

I am working on a class that sorts and matches items in a collection of arrays. In the end, elements common to all 3 arrays should be printed. The idea is that as the first array is compared to the second it stores the matched items in tempArray. When all items are compared the tempArray should overwrite the checked array, and the process continues until all arrays are checked. I have set all the checking in a do loop that should run while the value is <= to the array length. This allows all items in the reference array to be checked. I get an index out of bounds message but not where I would expect it. I have tried varying the condition in the do while loop in the match method, but it did not change the result. There may be other issues I have not addressed with solving the algorithm, but this one has me stumped and I am not able to progress.

package testing;
public class TestMatchMain {
public static void main(String[] args) {
Comparable[] innerCollection0 = {1,2,3,4,5};
Comparable[] innerCollection1 = {1,1,5,6,7};

[Code] .....

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Populate DB From Another Using ArrayLists And Arrays - Index Out Of Bounds Exception

Mar 16, 2015

I have an issue with an IndexOutOfBoundsException. I am trying to populate a db from another using arraylists and arrays. I can get the data but the program fails when trying to run the inserts. I am trying to perform SQL in batches of 5. I have added a comment to the failing line.

/*Set in code at beginning*/
ArrayList<String[]> privacyList = new ArrayList<String[]>();
ArrayList<String[]> statementBuffer = new ArrayList<String[]>();
 
/*Some sql is performed and the following String array is populated*/
while (rs.next()) {
String[] row = new String[55];
resultSetIsEmpty = false;
row[0] = rs.getString("ID");

[Code] ....

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Oct 17, 2014

Code is supposed to count number of Words in a String between A-Z and a-z, i am aware there are many methods to do this more efficiently, but i would prefer to do it using the methods shown.

class
// Purpose : 1) Write a program which will input a string from the
//keyboard, and output the number of separate words,
//where a word is one or more characters separated by
//spaces. Your program should only count as words groups
//of characters in the ranges A..Z and a..z
//
{
public static void main(String args[])

[code]....

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Array Index Out Of Bounds

Oct 21, 2014

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.*;
import java.awt.event.*;

[Code] ......

Just cant see where the array is out og bounds the array ButtonList has 9 buttons....

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String Index Out Of Bounds?

Feb 6, 2014

Ok, so I'm just trying to write a basic little program that reverses the letters in someone's name. I thought I had it down, but I guess not. Here's the code, and the error I'm getting is:

java.lang.StringIndexOutOfBoundsException:
String index out of range: 11 (in java.lang.String)
(11 is the length of the name I'm inputting)
import java.io.*;
import java.util.*;

[code]....

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Index Out Of Bounds Exception

Jul 13, 2014

I can't even run the program, because it gives me index out of bounds exception but what exactly went wrong.

I feel that even after it's able to run it will be totally wrong, but one thing at a time /*Write a method called longestSortedSequence that accepts an array of integers as a parameter and returns the length of the longest sorted (nondecreasing) sequence of integers in the array.

For example, in the array {3, 8, 10, 1, 9, 14, -3, 0, 14, 207, 56, 98, 12}, the longest sorted sequence in the array has four values in it (the sequence -3, 0, 14, 207), so your method would return 4 if passed this array. Sorted means non-decreasing, so a sequence could contain duplicates. Your method should return 0 if passed an empty array.

*/ public class ten {
public static void main(String[] args) {
int[] arr = {3, 8, 10, 1,9, 14, -3, 0, 14, 207, 56, 98, 12};
longestSortedSequence(arr);
System.out.println(longestSortedSequence(arr));

[code]....

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Array Index Out Of Bounds Exception

Feb 18, 2009

I am getting Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 4 at lsb2.main(lsb2.java:44)Here is the code:

Java Code: import java.io.*;
import java.lang.Integer.*;
import java.lang.Math.*;
import java.util.*;
class lsb2

[code]....

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String Index Out Of Bounds Exception

Apr 8, 2015

I get the following error when trying to run my hangman program:

Exception in thread "main" java.lang.StringIndexOutOfBoundsExceptiion.

Why am I getting this error?

import java.util.*;
import java.io.*;
public class hangman {
public static void main(String[] args) throws FileNotFoundException{
Scanner kb = new Scanner(System.in);
String filename;

[Code] .....

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Array Index Out Of Bounds Exception?

Jan 28, 2014

java.lang.ArrayIndexOutOfBoundsException: 991

at Champion.main(Champions (1) (1).java:209)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)

[Code]....

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Identity Program - Check If Randomly Generated Number Match Index

Apr 14, 2015

I have this program where I'm supposed to fill an array with 1000 indices with 1000 randomly generated numbers between 1 and 1000. The program is supposed to check if any of the numbers match an index that is the same value (so for example, the number 4 is in index 4). How to check for that condition, especially using a binary search (I'm also told to use a binary search).

Right now the variable index isn't initialized because I don't know what to initialize it to exactly. How do I check to see if any numbers match the value of the same index?

import java.util.*;
public class Identity {
public static void main(String[] args) {
int [] integers = new int [1000];
// Fill array with randomly generated numbers
int [] display = GenerateRandom(integers);

[Code] ....

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Airline Having With Array Index Out Of Bounds Exception?

Mar 22, 2014

class test{//class
public static void main(String[]args) {
String booking [][]= new String [30] [6] ;//two dimensional array
System.out.println("Enter the seat column you want");//column entry
char column=Keyboard.readChar();
System.out.println("Enter the seat row you want");//row entry
int row=Keyboard.readInt();

[code]...

cant get my in put to go in to the index

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2D Character Array - Can Compare To Index Out Of Bounds?

Nov 11, 2014

I have a 2-D character array and I was wondering if I can compare a given index to an out of bounds index and what would I have to write? For instance

if(array[0 - 1][0 - 1] == 'indexoutofbounds'){ **// I know that 'indexoutofbounds' is probably not the right wording**
stuff happens
}

If I can do this what would I actually have to write in where it says 'indexoutofbound' ?

I will be using this for many indexes so it wont always be [0 - 1][0 - 1] it could be [4 - 1][3 - 1] in which case it wouldn't be out of bounds and wouldn't move onto "stuff happens"....

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Exception In Thread - Array Index Out Of Bounds

Mar 20, 2015

The following code generates an array out of bounds exception

int[] myArray1 = new int[5]; 
for(int j = 0; j < myArray1.length; j++)
{
myArray1[j] = 10;
System.out.println("myArray1["+j+"] : " + myArray1[j]);
}
for (int i : myArray1) {
System.out.println("Blah myArray1["+i+"] : " + myArray1[i]);
}

The exception

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 10
at Tutorial2.main(Tutorial2.java:40)

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Array Index Out Of Bounds Exception Error

Jan 24, 2015

I have two codes of needed to run but after processing, the said above error is preventing it from getting the general output of the code.I can't seem to find my errors or I don't have any clue at all, if perhaps you know, here's the codes:

Error :
PHP Code:

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0
    at simpleOutput.main(simpleOutput.java:13) 
public class simpleOutput {
public static void main(String args[]){
int n = Integer.parseInt(args[0]);
for(int i = 1; i <= n; i++){
}
for(int i = 1; n <= i; n++){
System.out.print((i*n)+" ");

[code]....

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Creating Conway Game Of Life - Index Out Of Bounds?

Mar 3, 2015

The question pretty much says it all. My problem seems to be when adding the neighbours, I am always getting a Index out of Bounds problem. I know this is because the code is reaching for the edge of the table, for example if the column, i = 0 and the statement says to perform i - 1 and return it, then we are going to have a problem.

Similarly with anything like j = 20, j + 1 (as the grid only has 20 spaces). I understand the problem, but I am unsure of how to solve it. I have tried messing around with the if statements, but I continue to get the 'out of bounds' problem...

import javax.swing.*;
public class GameOfLife {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
int cellChoice = 0;
int newCells = 1;
int generation = 1;
int neighbours = 0;

[Code] .....

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Longest Sorted Sequence - Index Out Of Bounds Exception

Jul 13, 2014

My problem is that I can't even run the program, because it gives me

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 13
at domashno.ten.longestSortedSequence(ten.java:37)
at domashno.ten.main(ten.java:17)

Code :

public static void main(String[] args) {
int[] arr = {3, 8, 10, 1,9, 14, -3, 0, 14, 207, 56, 98, 12};
 longestSortedSequence(arr);
System.out.println(longestSortedSequence(arr));
}
public static int longestSortedSequence(int[] arr) {
 
[Code] ....

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Jan 10, 2015

I am having trouble with an array out of bounds exception. I understand what the error means (that I am trying to access part of array that does not exist). But I do not see the error in my code.

Java Code:

public class bubbleSort
{
public static void main(String []args)
{
int i;
int array [] = {12,9,4,99,120,1,3,10};

[code]....

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Mar 8, 2014

I'm doing a project with very defined requirements. Input and output will be done to and from a file. Both the input and output files should have the same format. Each file will consist of a series of lines formatted as follows:

Year Rank Artist Title

That is, each line of the file will consist of the year, rank, artist, and title of a single song, with each of the fields separated by tabs ( ). Output files must maintain this format—you should be able to use the output file of one run of the program as the input to another run.

The first part of my project is to make a Song class, with 6 methods:

public static Song parse(String s) { //Parse a string of the form “Year Rank Artist Title” and create a Song object with the given values.
}
public int getYear() { //returns the year of the song
}
public int getRank() { //returns the rank of the song

[Code] .....

So far, I have worked out my Song class like this:

Java Code:

import java.util.Scanner;
public class Song {
private int year;
private int rank;
private String artist;
private String title;

[Code] ....

I know there's definitely a problem with my parsing, as I am getting the

Exception in thread "main" java.util.NoSuchElementException

when I attempt to input a test String at my variables.

Should I try using StringTokenizer and Integer.parseInt()? I think that perhaps the reason why an error is occuring is because the String is being parsed into Strings and there are no int values to be inputted into the year and rank variables.

Or is there a way to do this with Scanner?

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Apr 15, 2014

I have been trying to get this method to work for a few hours now, for some reason I get an IndexOutOfBounds exception every time. Basically I am trying to read a txt file and add the words to an ArrayList as strings separated by a space .

private ArrayList<String> readLinesFromFile(BufferedReader inputFile) throws IOException
{
String value = null;
ArrayList<String> result = new ArrayList<String>();
while((value = inputFile.readLine()) != null){
String[] values = value.split(" ");
for (int i = 0; i < values.length; i++){
result.add(values[i]);
}
}
return result;
}

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Oct 21, 2014

I need to read from a text file given to us that has a list of books with authors names and book titles separated by an @ symbol for our delimiter. Here is the code I have right now, but it throws an ArrayIndexOutOfBoundsException at line 7...and I am unsure why?

import java.io.*;
import java.util.*;
public class Driver {
public static void main(String[] args) {
new Driver(args[0]);

[Code] ....

I realize that it must have something to do with my command line argument...but I am unsure what. Am I not entering the file name correctly?

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Apr 6, 2014

I am working on the Kevin Bacon - 6 degrees of bacon problem. I want to take my Array List and use the index and Values that I have saved in it as the Key and Value of a Hashmap. Below is my code.

HashMap<Integer, ArrayList<String>> actors =
new HashMap<Integer, ArrayList<String>>();
ArrayList array = new ArrayList();
try (BufferedReader br = new BufferedReader(
new FileReader("actors.txt"));)

[code]...

saving each one in it's own spot. I want to use the index of each one as the key to find it in the Hashmap....

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Nov 27, 2014

I working on a bank program that gets a user id, name and balance from a text file. I need to be able to sort based on each field. I'm using Collection.sort and Comparator. I'm using String[] array = file.toFile().list(); to get the values for the array from the text file. I can't figure out how to make this into an arraylist. I understand the concept when hardcoding the data but having trouble doing it from a text file.

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Nov 16, 2014

I need to somehow compare the random color chosen from the color array and the random name selected from the name array. I know how to compare to entire arrays of the same type such as integers. How to go about this with two different arrays. I thought maybe I could parse the color array selection to a string but had no luck with that either.

Problem #1: Design and implement an Applet that plays a simple game to teach a child to read. The game displays a picture on the left hand side of the Applet and a word on the right hand side. Below the pictures are two buttons for the child to click--one if the word matches the picture, the second of the word doesn't match the picture. Display an error message if the child is incorrect (or play a sound). Display (or play a sound) display words of encouragement if the child chooses correctly. Add a loop so the child can keep playing.

import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import java.util.ArrayList;
import java.util.Random;

[Code] ....

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Mar 30, 2014

I am trying to sort a set of parallel arrays. I really believe that the code is correct, but it is not working out as expected.This is the specific code for the sort:

Java Code: for (int y = 1; y < (dataArray.length + 1); y++)
{
for (int x = 0; x < dataArray.length - 1 ; x++)
{
if ((dataArray[x][1]) <= (dataArray[x + 1][1]));
{
tempOpen = dataArray[x][1];
dataArray[x][1] = dataArray[x + 1][1];
dataArray[x + 1][1] = tempOpen;

[code]....

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Mar 31, 2014

I'm having a problem printing out the descending order of my array. The array order goes like (Title,Studio,Year). I try to create to ints with the compareTo method but when the program is run the I get array out of bounds. Could the answer possibly be that in order not not have the out of bounds error, to create a for loop inside of the while?

public class Movie2
{
// instance variables
private int year;
private String Title;
private String Studio;

[code]...

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Apr 24, 2014

I've just written a program that generates 100 numbers that range from 0 ~ 25 using arrays, the program calls another method that sorts the even numbers into a separate array and returns the array. I need it to display both arrays, however, when I run my program, the numbers of both arrays are mixed together, and I'm not sure how to separate them.

[ public class Array1
{
public static void main(String[] args)
{
int array [ ] = new int[100];
for (int i = 0; i < array.length; i++)
{
array[i] = (int) (Math.random() * 26);

[Code] .....

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