我对Java很陌生，但一般来说不是OOP。我正在开发经典的 Simon 游戏，其中用户遵循我的 Java 类的随机生成模式（实际上是数字）的递增序列。我收到一个错误：
java.lang.ArrayIndexOutOfBoundsException: 20
at Simon.generateSequence(Simon.java:58)
at Simon.<init>(Simon.java:23)
我不知道如何解决这个问题。看起来我调用的元素并不多于数组中的元素。这是代码：
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 <= 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 <= 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 <= 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 >= 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;
}
*/
}