我创建了一个单类Java游戏，我们需要买入和卖出股票，我刚开始使用Java并且是新手，所以需要帮助+这段代码不是很好。
import java.io.*;
import java.util.Random;
public class stock_holding_game
{
static Random randomn = new Random();
static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
public static void main(String[] args)throws IOException
{
double cash = 30.0;
double stocks[] = {0,10,20,40,80,160,320,640};//cost of stocks (there are 7 stocks each with different price)
int mystocks[] = {0,0,0,0,0,0,0,0};
pass("Enter your name");
String name = br.readLine();
pass("Hi "+name);
commandlist();
boolean booleancheck = true;
while(booleancheck)
{
pass("Please enter your command");
String command = br.readLine();
command =" "+command+" ";
char c = command.charAt(2);
switch(c)
{
case'h':
pass("enter the stock ID number");
int s1 = Integer.parseInt(br.readLine());
if(s1>0&&s1<=8)
{
pass("Starting price: "+stocks[s1]);
double t = randomn.nextDouble() *(stocks[s1]/10.0);
int add = randomn.nextInt(2);
if(add==0)stocks[s1]=stocks[s1]+t;
else
stocks[s1]=stocks[s1]-t;
pass("Current price: "+stocks[s1]);
}
else
{
pass("Wrong Number");
pass("Enter a number from 1 to 8");
pass("Do whole task again xD");
}
break;
case 'n':
pass("Enter the stock ID number");
int s2 = Integer.parseInt(br.readLine());
if(s2>0&&s2<=8)
{
double t = randomn.nextDouble() *(stocks[s2]/10.0);
int add = randomn.nextInt(2);
if(add==0)stocks[s2]=stocks[s2]+t;
else
stocks[s2]=stocks[s2]-t;
pass("Current price: "+stocks[s2]);
pass("You currently have: "+mystocks[s2]+ " of these stocks");
pass("You have " +cash+" cash");
pass("Enter the number of stocks you wish to buy");
int nsbuy = Integer.parseInt(br.readLine());
if(nsbuy<0)pass("Idiot ! , add atleast 1 if you wish to buy");
else if(nsbuy==0);
else
{
double checkprice = nsbuy*stocks[s2];
if(checkprice > cash)
{
pass("You don't have enough cash in hand !");
}
else
{
cash = cash - checkprice;
mystocks[s2] = mystocks[s2] + nsbuy;
pass("Now you have "+mystocks[s2]+ " of stock ID " +s2);
pass("You are left with "+cash);
}
}
}
else
{
pass("Invalid Input!");
pass("Enter a number from 1 to 8");
}
break;
case 'a':
pass("You have currentln " +cash+" cash");
break;
case 'x':
booleancheck = false ;
pass("You leave with "+cash+" cash");
pass("Bye, Hope to see you again .");
break;
case 'o':
commandlist();
break;
case 'y':
for(int xyz = 1; xyz<mystocks.length - 1;xyz++)
{
pass("You have "+mystocks[xyz]+ " of stock ID "+xyz);
}
break;
case 'e':
pass("Enter the stock ID number");
int s3 = Integer.parseInt(br.readLine());
if(s3>0&&s3<=8)
{
double t = randomn.nextDouble() *(stocks[s3]/10.0);
int add = randomn.nextInt(2);
if(add==0)stocks[s3]=stocks[s3]+t;
else
stocks[s3]=stocks[s3]-t;
pass("Current price: "+stocks[s3]);
pass("You currently have: "+mystocks[s3]+ " of these stocks");
pass("You have " +cash+" cash");
pass("Enter the number of stocks you wish to sell");
int nssell = Integer.parseInt(br.readLine());
if(nssell<0)pass("Enter atleast 1 if you wish to sell(in case you have)");
else if(nssell==0);
else
{
double nscheckprice = stocks[s3]*nssell;
if(nssell>mystocks[s3])pass("You don't jave that many stocks !");
else
mystocks[s3] = mystocks[s3] - nssell;
cash = cash + nscheckprice;
pass("You have successfully sold your " +nssell+" stocks for "+nscheckprice);
pass("Now , you have , "+ mystocks[s3]+ " of stock ID "+s3);
pass("You are left with " +cash + " cash");
}
}
else
{
pass("Invalid Input!");
pass("Enter a number from 1 to 8");
}
break;
default:
pass("Invalid Input!");
break;
}
}
}
private static void commandlist()
{
pas("Your command list : ");
pas("checkstock - check the current and earlier value of a stock");
pas("invest - buy shares ");
pas("sell - sell ur share ");
pas("exit - leave the game");
pas("my - show ur all current stock");
pas("cash - show ur current cash in hand");
pas("There are 7 stock with id 1 , 2 , 3 , and so on till 7")
pas("Remember ! It is case sensitive");
}
private static void pass(String source)
{
System.out.println(source);
}
private static void pas(String source)
{
System.err.println(source);
}
}
我希望有一个这个代码的小程序，但我对applet了解不多。我希望使用一些按钮而不是打字。我知道代码添加按钮但不知道如何使用它们。需要帮助，所有回复都将不胜感激。
是的，也告诉我这个游戏怎么样（给这个游戏打分），但速度好像是新手一样。 现在，我没有充分询问如何将其转换为applet，而是希望以小块形式提出。首先，如何使用按钮告诉我的电脑如何继续？
这是我的代码：
import java.awt.*;
public class Buttonsuse extends java.applet.Applet
{
Button invest , sell , check ;
public void init()
{
setBackground (Color.white);
setLayout(new FlowLayout (FlowLayout.CENTER,10,10));
invest = new Button("Invest");
sell = new Button("Sell");
check = new Button("Check");
add(invest);
add(sell);
add(check);
}
}
现在，我怎么知道并告诉电脑按下按钮，就像用户按下投资按钮一样，它会打印出“你想投资”。
我该怎么做？
答案 0 :(得分：2)
您当前的程序只是一个大型的静态主方法，只有一些小的支持静态方法。由于此代码非常线性，因为大多数控制台程序都是如此，并且由于它没有符合OOP的类，因此无法直接转换或重用任何此代码以在事件驱动的GUI中使用。我建议：
要考虑的非GUI类：
HashMap<Stock, Integer>和股票数量。最重要的是，没有一种简单的方法可以将此代码“转换”为GUI，相反，您应该专注于学习Java基础知识，并在学习时试验您的代码（这就是您的学习方式）。