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POArrayIndexOutOfBoundsException In Simon Game, Can't Figure Out Why
 

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    <p>I'm pretty new to Java, but not OOP in general. I'm working on the classic Simon game where the user follows an increasing sequence of a randomly generated pattern (numbers really) for my Java class. I'm getting an error: </p> <pre><code>java.lang.ArrayIndexOutOfBoundsException: 20 at Simon.generateSequence(Simon.java:58) at Simon.&lt;init&gt;(Simon.java:23) </code></pre> <p>I can't figure out how to fix this. It doesn't look like I'm calling more elements than are in the array. Here's the code:</p> <pre><code>import acm.program.*; import acm.graphics.*; import java.awt.Color; import java.awt.Font; import javax.swing.*; import java.awt.event.*; public class Simon extends Program implements ActionListener { private int array[]; private int currentSeqLength; private int usersInput; public Simon() { //Initialize Class Values array = new int[20]; currentSeqLength = 1; usersInput = 0; generateSequence(); while(currentSeqLength &lt;= array.length) { playSequence(); //Wait For User's Input Here, Assign To Variable //usersInput = if (pushButton(usersInput)== true) { currentSeqLength++; } else { gameOverMessage(); break; //Reset Variables: } } } public void generateSequence() { //Fill Array With Random Numbers for (int i = 0; i &lt;= array.length; i++ ) { array[i] = (int)(Math.random()*4); } } public void setLength(int length) { //Set Current Length To Size Of Given Argument currentSeqLength = length; } int getLength() { return currentSeqLength; } int[] playSequence() { //Print Out The Current Sequence //New Local Array To Return int newArray[]= new int[currentSeqLength]; //Repeat As Many Times As Value Of currentSeqLength for(int i = 0; i &lt;= currentSeqLength ; i++) { System.out.println(array[i]); //Return an array of int's to the player. newArray[i] = array[i]; } return newArray; } boolean pushButton(int usersInput) { //Given A Button Press (0-3), Return Whether That Was The //Correct Button To Play At The Moment if (usersInput == array[currentSeqLength]) { return true; } else { return false; } } boolean isTurnOver() { //If Current Sequence Length Matches Or Exceeds Value Of //Array Element In Location Of Current Sequence Length if (currentSeqLength &gt;= array[currentSeqLength]) { return true; } else { return false; } } //Not Needed? boolean isGameOver() { if (pushButton(usersInput) == false) { return true; } else { return false; } } String gameOverMessage() { return "Game Over"; } /*public void actionPerformed(ActionEvent event) { int input; } */ </code></pre> <p>}</p>
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