我将我的按钮添加到ActionListener，按钮似乎没有做任何事情，因为当按下按钮时我确定了一个任务，我甚至要求它打印一些东西。我想用gui做一个股票游戏。我有一本书教我如何做到这一点，我不知道它为什么不起作用。
package stock.gui.game;
import javax.swing.*;
import java.util.Random;
import java.lang.Thread;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.math.*;
public class StockGUIGame extends JFrame implements ActionListener{
int linecount = 0;
float[] stockpricebefore = {20.00f , 1090.00f , 60.00f , 35.00f , 160.00f, 70.00f, 95.00f, 15.00f };
int[] downupdecider2 = {0, 0, 0, 0, 0, 0, 0, 0};
float[] downup2 = {0, 0, 0, 0, 0, 0, 0, 0};
//int linecount = 0;
float netwoth = 0;
String[] names = {"Universe Express", "Digital Internet", "Garstump Motors", "Freedom Frinature", "Walter's Waters", "Tiger Toys", "Healthy Tastes", "Niagra Drinks"};
float[] stockpricestart = {20.00f , 1090.00f , 60.00f , 35.00f , 160.00f, 70.00f, 95.00f, 15.00f };
float[] stockprice = {20.00f , 1090.00f , 60.00f , 35.00f , 160.00f, 70.00f, 95.00f, 15.00f };
int stockbuytrack = 0;
int[] stocktobuy = {100, 0, 0, 0, 0, 0, 0, 0};
int[] stockbuy = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
int stocknow = 0;
int days = 0;
byte downupcounter[] = {1, 1, 1, 1, 1, 1, 1, 1};
Random ran = new Random();
float[] downup = {0, 0, 0, 0, 0, 0, 0, 0};
float finalstockprice = 0.00f;
int[] downupdecider = {0, 0, 0, 0, 0, 0, 0, 0};
float[] downupmax = {6.00f, 4.00f, 4.00f, 4.00f, 0.1f, 8.00f, 10.00f, 4.00f};
float[] downuptwomax = {3.00f, 2.00f, 2.00f, 2.00f, 0f, 4.00f, 5.00f, 2.00f};
float[] downupsmall = {1.50f, 0.5f, 1.50f, 3.5f, 0.20f, 2.50f, 1.50f, 1.50f};
float[] downuptwosmall = {0.75f, 0.25f, 0.50f, 1.50f, 0.10f, 1.00f, 0.50f, 0.50f};
int[] stocknumber;
int sharesbuy[] = {0, 0, 0, 0, 0, 0, 0, 0};
static float money = 1000.00f;
String[] multiplier = {"1", "10", "100", "1,000", "10,000", "100,000", "1,000,000"};
float assets = 0.00f;
//JLabel lab = new JLabel("Universe Express | Digital Internet | Garstump Motors | Freedom Frinature | Walter's Waters | Tiger Toys | Healthy Tastes | Niagra Drinks | Net Worth | Cash |");
JSlider stockslider = new JSlider(0, 10);
JTextArea ss1 = new JTextArea(30, 216);
JScrollPane s1 = new JScrollPane(ss1, ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
JComboBox multi = new JComboBox(names);
JComboBox mul = new JComboBox(multiplier);
JButton buy = new JButton("Buy");
JButton sell = new JButton("Sell");
JCheckBox all = new JCheckBox("All");
public StockGUIGame() throws InterruptedException{
super("Stock Game");
setSize(1550, 650);
setVisible(true);
setDefaultCloseOperation(EXIT_ON_CLOSE);
JPanel pane = new JPanel();
stockslider.setMajorTickSpacing(10);
stockslider.setMajorTickSpacing(1);
stockslider.setPaintTicks(true);
stockslider.setPaintLabels(true);
Font font = new Font("Courier New", Font.PLAIN, 12);
ss1.setFont(font);
//pane.add(lab);
pane.add(s1);
pane.add(buy);
pane.add(sell);
pane.add(multi);
pane.add(mul);
pane.add(stockslider);
pane.add(all);
add(pane);
all.addActionListener(this);
ss1.append("Universe Express | Digital Internet | Garstump Motors | Freedom Frinature | Walter's Waters | Tiger Toys | Healthy Tastes | Niagra Drinks | Days | Net Worth | Cash |\n" );
for (int l = 1; l == 1; ){
Thread.sleep(900);
days = days + 1;
int tu = stockslider.getValue();
String op = String.format("%d", tu);
formula();
print();
ss1.setCaretPosition(ss1.getDocument().getLength());
}
}
public void actionPerformed(ActionEvent evt){
Object source = evt.getSource();
if (source == buy){
if ((stockprice[multi.getSelectedIndex()]) * (((int) Math.pow(10, (mul.getSelectedIndex()) / 10)) * stockslider.getValue()) < money){
linecount = linecount - 1;
ss1.append("Not enough money! Can buy" + Math.round((money - (money % stockprice[multi.getSelectedIndex()])) / stockprice[multi.getSelectedIndex()]));
}
else if (all.isSelected() == true){
stocktobuy[multi.getSelectedIndex()] = stocktobuy[multi.getSelectedIndex()] + Math.round((money - (money % stockprice[multi.getSelectedIndex()])) / stockprice[multi.getSelectedIndex()]);
ss1.append("You bought " + Math.round((money - (money % stockprice[multi.getSelectedIndex()])) / stockprice[multi.getSelectedIndex()]) + " stocks of " + names[multi.getSelectedIndex()] + " at " + stockprice[multi.getSelectedIndex()] + " a share");
linecount = linecount - 1;
money = money - (stocktobuy[multi.getSelectedIndex()] * stockprice[multi.getSelectedIndex()]);
}
else{
ss1.append("You bought " + ((int) Math.pow(10, (mul.getSelectedIndex()) / 10)) * stockslider.getValue() + " stocks of " + names[multi.getSelectedIndex()] + " at " + stockprice[multi.getSelectedIndex()] + " a share");
stocktobuy[multi.getSelectedIndex()] = ((int) Math.pow(10, (mul.getSelectedIndex()) / 10)) * stockslider.getValue();
money = money - (stocktobuy[multi.getSelectedIndex()] * stockprice[multi.getSelectedIndex()]);
linecount = linecount - 1;
}
}
else if (source == sell){
if (stocktobuy[multi.getSelectedIndex()] + 1 < ((((int) Math.pow(10, (mul.getSelectedIndex()) / 10)) * stockslider.getValue() * stockprice[multi.getSelectedIndex()]))){
linecount = linecount - 1;
}
else if (all.isSelected() == true){
ss1.append("You sold " + Math.round((money - (money % stockprice[multi.getSelectedIndex()])) / stockprice[multi.getSelectedIndex()]) + " stocks of " + names[multi.getSelectedIndex()] + " at " + stockprice[multi.getSelectedIndex()] + " a share");
money = money + (stocktobuy[multi.getSelectedIndex()] * stockprice[multi.getSelectedIndex()]);
stocktobuy[multi.getSelectedIndex()] = 0;
linecount = linecount - 1;
}
else{
ss1.append("You sold " + ((int) Math.pow(10, (mul.getSelectedIndex()) / 10)) * stockslider.getValue() + " stocks of " + names[multi.getSelectedIndex()] + " at " + stockprice[multi.getSelectedIndex()] + " a share");
money = money + ((((int) Math.pow(10, (mul.getSelectedIndex()) / 10)) * stockslider.getValue() * stockprice[multi.getSelectedIndex()]) );
stocktobuy[multi.getSelectedIndex()] = 0;
linecount = linecount - 1;
}
}
}
private static void setLookAndFeel(){
try{
UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NinbusLookAndFeel");
}
catch(Exception exc){
//ignore error
}
}
public static void main(String[] args) throws InterruptedException {
setLookAndFeel();
StockGUIGame sguig = new StockGUIGame();
}
public void formula(){
for (int b = 0; b < 8; b++ ){
if (downupcounter[b] < 1){
stockpricebefore[b] = stockprice[b];
}
downupdecider[b] = ran.nextInt(20);
if (stockprice[b] > stockpricestart[b] * (1 + (days / 400.00f)) * 1.75f){
downupdecider[b] = 10;
}
if (downupdecider[b] == 10){
downup[b] = ((ran.nextFloat() * downupmax[b]) * ((stockpricestart[b] * (1 + (days / 400.00f))) / stockprice[b])) - downuptwomax[b];
if (downup[b] > 1.5f * downupmax[b]){
downup[b] = (float)downupmax[b];
}
}
if (downupcounter[b] == 1){
downup[b] = (ran.nextFloat() * downupmax[b]) - downuptwomax[b] ;
downupcounter[b] = 0;
}
downupdecider2[b] = ran.nextInt(4);
if (downupdecider2[b] == 2){
downup2[b] = (ran.nextFloat() * (downupmax[b] * 2.00f)) - (downuptwomax[b] * 2) ;
}
if (downupcounter[b] == 1){
downup2[b] = (ran.nextFloat() * (downupmax[b] * 2.00f)) - (downuptwomax[b] * 2);
downupcounter[b] = 0;
}
finalstockprice = ((((downup[b] + downup2[b]) + (ran.nextFloat() * ( downupsmall[b]) - downuptwosmall[b])) * stockprice[b]) / 100.00f) + stockprice[b];
stockprice[b] = Math.round(finalstockprice * 100) / 100.00f ;
if (ran.nextInt(99) == 59){
stockprice[b] = Math.round((stockprice[b] - ((ran.nextFloat() / 4.00f) * stockprice[b])) * 100) / 100.00f;
}
if (ran.nextInt(99) == 45){
stockprice[b] = Math.round((stockprice[b] + ((ran.nextFloat() / 4.00f) * stockprice[b])) * 100) / 100.00f;
}
}
}
public void print(){
ss1.append("$");
if (stockprice[0] < stockpricebefore[0])
ss1.append( stockprice[0] + "-");
else if (stockprice[0] > stockpricebefore[0]){
ss1.append( stockprice[0] + "+");
}
else{
ss1.append( stockprice[0] + "=");
}
for (int c = 0; c < 16 - (Float.toString(stockprice[0]).length()) - 1; c++){
ss1.append(" ");
}
ss1.append("|");
ss1.append("$");
if (stockprice[1] < stockpricebefore[1])
ss1.append( stockprice[1] + "-");
else if (stockprice[1] > stockpricebefore[1]){
ss1.append( stockprice[1] + "+");
}
else{
ss1.append( stockprice[1] + "=");
}
for (int c = 0; c < 17 - (Float.toString(stockprice[1]).length()) - 1; c++){
ss1.append(" ");
}
ss1.append("|");
ss1.append("$");
if (stockprice[2] < stockpricebefore[2])
ss1.append( stockprice[2] + "-");
else if (stockprice[2] > stockpricebefore[2]){
ss1.append( stockprice[2] + "+");
}
else{
ss1.append( stockprice[2] + "=");
}
for (int c = 0; c < 16 - (Float.toString(stockprice[2]).length()) - 1; c++){
ss1.append(" ");
}
ss1.append("|");
ss1.append("$");
if (stockprice[3] < stockpricebefore[3])
ss1.append( stockprice[3] + "-");
else if (stockprice[3] > stockpricebefore[3]){
ss1.append( stockprice[3] + "+");
}
else{
ss1.append( stockprice[3] + "=");
}
for (int c = 0; c < 18 - (Float.toString(stockprice[3]).length()) - 1; c++){
ss1.append(" ");
}
ss1.append("|");
ss1.append("$");
if (stockprice[4] < stockpricebefore[4])
ss1.append( stockprice[4] + "-");
else if (stockprice[4] > stockpricebefore[4]){
ss1.append( stockprice[4] + "+");
}
else{
ss1.append( stockprice[4] + "=");
}
for (int c = 0; c < 16 - (Float.toString(stockprice[4]).length()) - 1; c++){
ss1.append(" ");
}
ss1.append("|");
ss1.append("$");
if (stockprice[5] < stockpricebefore[5])
ss1.append( stockprice[5] + "-");
else if (stockprice[5] > stockpricebefore[5]){
ss1.append( stockprice[5] + "+");
}
else{
ss1.append( stockprice[5] + "=");
}
for (int c = 0; c < 11 - (Float.toString(stockprice[5]).length()) - 1; c++){
ss1.append(" ");
}
ss1.append("|");
ss1.append("$");
if (stockprice[6] < stockpricebefore[6])
ss1.append( stockprice[6] + "-");
else if (stockprice[6] > stockpricebefore[6]){
ss1.append( stockprice[6] + "+");
}
else{
ss1.append( stockprice[6] + "=");
}
for (int c = 0; c < 15 - (Float.toString(stockprice[6]).length()) - 1; c++){
ss1.append(" ");
}
ss1.append("|");
ss1.append("$");
if (stockprice[7] < stockpricebefore[7])
ss1.append( stockprice[7] + "-");
else if (stockprice[7] > stockpricebefore[7]){
ss1.append( stockprice[7] + "+");
}
else{
ss1.append( stockprice[7] + "=");
}
for (int c = 0; c < 14 - (Float.toString(stockprice[7]).length()) - 1; c++){
ss1.append(" ");
}
ss1.append("|");
ss1.append(" ");
ss1.append("Day: " + days );
for (int c = 0; c < 30 - (Float.toString(days).length()) - 4; c++){
ss1.append(" ");
}
ss1.append("|");
ss1.append(" ");
ss1.append("$");
assets = (money + (stocktobuy[0] * stockprice[0]) + (stocktobuy[1] * stockprice[1]) + (stocktobuy[2] * stockprice[2]) + (stocktobuy[3] * stockprice[3]) + (stocktobuy[4] * stockprice[4]) + (stocktobuy[5] * stockprice[5]) + (stocktobuy[6] * stockprice[6]) + (stocktobuy[7] * stockprice[7]));
String str1 = Float.toString(money);
String str2 = Float.toString(assets);
ss1.append(str2);
for (int c = 0; c < 22 - (Float.toString(assets).length()) - 1; c++){
ss1.append(" ");
}
ss1.append("|");
ss1.append(" ");
ss1.append("$");
ss1.append(str1);
for (int c = 0; c < 20 - (Float.toString(assets).length()) - 1; c++){
ss1.append(" ");
}
ss1.append("|");
linecount = linecount + 1;
ss1.append("\n");
if (linecount == 28){
linecount = 0;
ss1.append("Universe Express | Digital Internet | Garstump Motors | Freedom Frinature | Walter's Waters | Tiger Toys | Healthy Tastes | Niagra Drinks | Days | Net Worth | Cash |\n" );
}
}
}
答案 0 :(得分：0)
您需要将ActionListener添加到按钮。
您执行all.addActionListener(this)但这是一个复选框，您不会在actionPerformed中检查该来源。
我认为你需要
buy.addActionListener(this);
sell.addActionListener(this);