问题描述
我是两个月的学生，所以请在这里忍受。
我正试图向我的朋友展示一个摇滚，纸，剪刀游戏。我已经使用launch4j成功创建了RockPaperScissors.exe。
现在，当我单击游戏的可执行文件时，将打开控制台。但是，当我的朋友尝试这样做时，如果他试图键入控制台，他会得到一个没有任何提示的控制台。
是否可以有一个可执行文件强制控制台启动？我是否需要更改代码的某些部分才能发生这种情况？
import java.util.Scanner;
import java.util.Random;
public class RockPaperScissors
{
/***** CONSTANT SECTION *****/
public static void main(String[] args)
{
/***** DECLaraTION SECTION *****/
Scanner keyboard;
Random rndGen;
char computerChoice;
int playerscore,compscore;
int winner,compInt;
String name;
String userChoice;
/***** INITIALIZATION SECTION *****/
keyboard = new Scanner(system.in);
rndGen = new Random();
computerChoice = ' ';
winner = -1;
compInt = -1;
playerscore = 0;
compscore = 0;
/***** INTRO SECTION *****/
System.out.print("What is your name? ");
name = keyboard.next();
System.out.println("\nHi " + name + ".");
System.out.println("\nLet's play Rock,Paper,Scissors!");
System.out.println("Best out of 3 wins.");
/***** INPUT SECTION *****/
while (playerscore < 2 && compscore < 2)
{
System.out.print("\nEnter your choice. Type R for rock,P for paper,or S for scissors: ");
//takes a char entry and changes it into a string,upper cases the entry,and then take the first letter of the string
userChoice = keyboard.next();
userChoice = userChoice.toupperCase();
while (!(userChoice.equals("R") || userChoice.equals("P") || userChoice.equals("S")))
{
System.out.println("Invalid entry.");
System.out.println("");
System.out.print("Enter your choice. Type R for rock,or S for scissors: ");
userChoice = keyboard.next();
userChoice = userChoice.toupperCase();
}
/***** PROCESSING SECTION *****/
compInt = rndGen.nextInt(3);
if (compInt == 0)
{
computerChoice = 'R';
}
else if (compInt == 1)
{
computerChoice = 'P';
}
else
{
computerChoice = 'S';
}
winner = RockPaperScissors.decideWinner(userChoice,computerChoice);
/***** OUTPUT SECTION *****/
System.out.printf(name + " chose %s%nComputer chose %c%n",userChoice,computerChoice);
switch(winner)
{
case 0: System.out.println("It's a tie!");
break;
case 1: System.out.println(name + " wins!");
playerscore = playerscore + 1;
break;
case 2: System.out.println("Computer won!");
compscore = compscore + 1;
break;
default: System.out.println("Invalid choice. Try again");
break;
}
System.out.println(name + ": " + playerscore + ",Computer: " + compscore);
}
if (playerscore > compscore)
{
System.out.println("\n" + name + " is the winner!!!");
}
else
{
System.out.println("\nSorry,the computer wins this time.");
}
keyboard.close();
System.out.println("Thanks for playing!");
}
/***** STATIC METHODS *****/
//Given two characters (R,P or S) determines //winner user rock paper scissors rules. Error check
//done in main
public static int decideWinner(String p1,char p2)
{
String combo;
combo = String.format("%s%c",p1,p2);
if ((combo.equals("RS")) || (combo.equals("PR")) || (combo.equals("SP")))
{
return 1;
}
else if ((combo.equals("RP")) || (combo.equals("PS")) || (combo.equals("SR")))
{
return 2;
}
else if ((combo.equals("PP")) || (combo.equals("SS")) || (combo.equals("RR")))
{
return 0;
}
else
{
return -1;
}
}
}
解决方法
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