使用shuffle（）时出现java错误，但使用randomNum（）时没有java错误
我有我的彩票游戏工作，但我需要改变的方式，计算机生成中奖号码。起初，我生成了一个随机数数组，但得到的是重复数。为了解决这个问题，我切换到随机排列一个包含30个数字的数组，并使用数组中的前6个数字。类似于彩票中掉下来的前6个球是如何使用的。当我运行程序时，它似乎在使用shuffle（）时出现java错误，但使用randomNum（）时没有java错误,java,Java,我有我的彩票游戏工作，但我需要改变的方式，计算机生成中奖号码。起初，我生成了一个随机数数组，但得到的是重复数。为了解决这个问题，我切换到随机排列一个包含30个数字的数组，并使用数组中的前6个数字。类似于彩票中掉下来的前6个球是如何使用的。当我运行程序时，它似乎在compareResults（）处崩溃。在itemStateChanged（ItemEvent e）中，我调用了randomNum（）和shuffle（）。我不知道为什么它不会比较结果，因为我最终得到的是randNum[] 我使用什么方法
compareResults（）itemStateChanged（ItemEvent e）randomNum（）shuffle（）randNum[] import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.Arrays;
import java.util.Collections;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class JLottery2 extends JFrame implements ItemListener {
private String[] lotteryNumbers = { "1", "2", "3", "4", "5", "6", "7", "8",
"9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19",
"20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30" };
private JPanel jp1 = new JPanel();
private JPanel jp2 = new JPanel();
private JPanel jp3 = new JPanel(new GridLayout(3, 10, 5, 5));
private JLabel jl1 = new JLabel("The Lottery Game!!!!!");
private JLabel jl2 = new JLabel(
"To play, pick six number that match the randomly selected numbers.");
private FlowLayout layout = new FlowLayout();
private GridLayout gridBase = new GridLayout(3, 1, 5, 5);
private GridLayout grid = new GridLayout(3, 10, 5, 5);
private Font heading = new Font("Palatino Linotype", Font.BOLD, 24);
private Font bodyText = new Font("Palatino Linotype", Font.BOLD, 14);
private Color color1 = new Color(4, 217, 225);
private Color color2 = new Color(4, 225, 129);
private int maxNumber = 6;
final int LOTTERY_NUMBER_MAX = 30;
private int counter = 0;
private int[] randomNum;
private int[] userPickedNumbers;
private int matchedNumbers = 0;
private JCheckBox checkBox[] = new JCheckBox[lotteryNumbers.length];
private String temp;
Container con = getContentPane();
public JLottery2() {
super("The Lottery Game");
con.setLayout(gridBase);
con.add(jp1);
jp1.setLayout(layout);
jp1.add(jl1);
jl1.setFont(heading);
jp1.setBackground(color1);
con.add(jp2);
jp2.setLayout(layout);
jp2.add(jl2);
jl2.setFont(bodyText);
jp2.setBackground(color1);
con.add(jp3);
jp3.setLayout(grid);
for (int i = 0; i < lotteryNumbers.length; i++) {
// JCheckBox checkBox[] = new JCheckBox[lotteryNumbers.length];
checkBox[i] = new JCheckBox(lotteryNumbers[i]);
jp3.add(checkBox[i]);
jp3.setBackground(color2);
checkBox[i].addItemListener(this);
}
setSize(500, 300);
setDefaultCloseOperation(EXIT_ON_CLOSE);
userPickedNumbers = new int[maxNumber];
}
public void itemStateChanged(ItemEvent e) {
/*
* actions taken as user checks the JCheckBoxes
*/
if (e.getStateChange() == ItemEvent.SELECTED && counter < maxNumber) {
temp = ((JCheckBox) e.getSource()).getText();
((JCheckBox) e.getSource()).setEnabled(false);
int intTemp = Integer.parseInt(temp);
userPickedNumbers[counter] = intTemp;
counter++;
System.out.println("add to counter");
System.out.println("the .getText() returns "
+ ((JCheckBox) e.getSource()).getText());
System.out.println("the tempoaray int is " + intTemp);
System.out.println("the number of picks is " + counter);
System.out.println("**************************************");
}
/*
* actions taken when the user has chosen 6 JCheckboxes
*/
if (counter == maxNumber) {
System.out.println("the picks have maxxed out");
JCheckboxSetVisibleFalse();
randNumber();
//shuffle();
compareResults();
}
}
/*
* creates an array of random lottery numbers
* array of 30 numbers is created then shuffled. The
* First 6 elements are place in the randomNum[]
*/
public void randNumber() {
randomNum = new int[maxNumber];
for (int i = 0; i < maxNumber; i++) {
randomNum[i] = ((int) (Math.random() * 100) % lotteryNumbers.length + 1);
}
System.out.println("the randomNum array is "
+ Arrays.toString(randomNum));
}
public void shuffle(){
Integer[] randomNumTemp = new Integer[LOTTERY_NUMBER_MAX];
for (int i = 0; i < LOTTERY_NUMBER_MAX; i++) {
randomNumTemp[i] = i+1;
}
//shuffle numbers
Collections.shuffle(Arrays.asList(randomNumTemp));
//add first 6 numbers to the randomNumTemp to randNum array
Integer[] randomNum = new Integer[maxNumber];
for (int i = 0; i < randomNum.length; i++) {
randomNum[i] = randomNumTemp[i];
}
}
/*
* compares the userPickedNumbers[] to the randomNum[]
*/
private void compareResults() {
System.out.println("the user picks are "
+ Arrays.toString(userPickedNumbers));
int i = 0;// user
int j = 0;// random
do {
if (userPickedNumbers[i] != randomNum[j]
&& j < maxNumber - 1) {
System.out.println("the user picked " + userPickedNumbers[i]
+ " the random number is " + randomNum[j]);
System.out.println("wrong guess " + j);
System.out
.println("the location of the element in the fisrt array is "
+ i);
System.out
.println("the location of the element in the second array is "
+ j);
j++;
} else if (userPickedNumbers[i] != randomNum[j] && j == 5) {
System.out.println(userPickedNumbers[i] + randomNum[j]);
System.out.println("one last wrong guess " + j);
System.out.println("the location of the first array is " + i);
j = 0;
i++;
} else if (userPickedNumbers[i] == randomNum[j]) {
matchedNumbers++;
i++;
j = 0;
System.out.println("the number of correct guesses are "
+ matchedNumbers);
System.out.println("the value of j is" + j);
System.out.println("the value of i is" + i);
} else if (randomNum[j] == maxNumber
&& userPickedNumbers[i] == randomNum[j]) {
j = 0;
i++;
matchedNumbers++;
}
} while (i < maxNumber);
}
private void JCheckboxSetVisibleFalse() {
for (int i = 0; i < lotteryNumbers.length; i++) {
checkBox[i].setVisible(false);
}
}
public static void main(String[] args) {
JLottery2 frame = new JLottery2();
frame.setVisible(true);
}
导入java.awt.BorderLayout；
导入java.awt.Color；
导入java.awt.Container；
导入java.awt.FlowLayout；
导入java.awt.Font；
导入java.awt.GridLayout；
导入java.awt.event.ItemEvent；
导入java.awt.event.ItemListener；
导入java.util.array；
导入java.util.Collections；
导入javax.swing.JButton；
导入javax.swing.JCheckBox；
导入javax.swing.JFrame；
导入javax.swing.JLabel；
导入javax.swing.JPanel；
公共类JLottery2扩展JFrame实现ItemListener{
私有字符串[]彩票号码={“1”、“2”、“3”、“4”、“5”、“6”、“7”、“8”，
"9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19",
"20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30" };
private JPanel jp1=新的JPanel（）；
private JPanel jp2=新的JPanel（）；
private JPanel jp3=新JPanel（新网格布局（3,10,5,5））；
私人JLabel jl1=新JLabel（“彩票游戏！！！”）；
专用JLabel jl2=新JLabel(
“要玩，请选择六个与随机选择的数字匹配的数字。”）；
私有FlowLayout=新FlowLayout（）；
private GridLayout gridBase=新的GridLayout（3,1,5,5）；
私有网格布局=新网格布局（3,10,5,5）；
专用字体标题=新字体（“Palatino-Linotype”，Font.BOLD，24）；
私有字体bodyText=新字体（“Palatino-Linotype”，Font.BOLD，14）；
专用颜色color1=新颜色（4217225）；
专用颜色2=新颜色（425129）；
私有整数maxNumber=6；
最终整数彩票号码最大=30；
专用整数计数器=0；
私有int[]随机数；
私有int[]userpickedNumber；
私有整数匹配数=0；
私有JCheckBox复选框[]=新JCheckBox[lotteryNumbers.length]；
私有字符串温度；
容器con=getContentPane（）；
公共JLottery2（）{
超级（“彩票游戏”）；
con.设置布局（gridBase）；
补充条款（jp1）；
jp1.设置布局（布局）；
jp1.add（jl1）；
jl1.设置字体（标题）；
jp1.挫折背景（颜色1）；
补充条款(jp2);；
jp2.设置布局（布局）；
jp2.add（jl2）；
jl2.setFont（bodyText）；
jp2.挫折背景（颜色1）；
续(jp3);；
jp3.设置布局（网格）；
for（int i=0；i