Java百分比和标题

Question

您好我正在开发一款Java游戏，用于测试用户在没有音乐的情况下更好地工作以进行分析的能力。我正在使用写文件并创建了一个.txt文件来保存结果。我不确定如何为保存的结果创建标题，例如名字：第二名。我也有点迷失，从结果中计算一个百分比。结果存储在变量，分数和分数2中我只想显示结果的百分比。谢谢。

if(Globals.score2 > Globals.score) {
    //Better with music
    MessageBox.infoBox("You scored " + Globals.score + " without music & " + Globals.score2 + " with music!\n" + "You seemed to concentrate better while music was playing!" , "Score");
} else if (Globals.score2 < Globals.score) {
    //Better Without Music
    MessageBox.infoBox("You scored " + Globals.score + " without music & " + Globals.score2 + " with music!\n" + "You seemed to concentrate better without any music playing!" , "Score");
} else {
    //Equal Reults
    MessageBox.infoBox("You scored " + Globals.score +  " without music & " + Globals.score2 + " with music!\n" + "Your concentration stayed the same through each play through!" , "Score");
}  
// JOptionPane.showMessageDialog(frame, "Your score for game one was" + "" + Globals.score2 );
new FinalScore().setVisible(true);
this.dispose();
AudioPlayer.player.stop(as);

toolkit.beep();
timer.cancel(); //Not necessary because we call System.exit
//System.exit(0); //Stops the AWT thread (and everything else)

//写入文件的代码

public class WriteFile {
    public static void SaveGame() throws IOException {
        String content = (Globals.IDUser + ", " + Globals.firstName + ", " + Globals.lastName + ", " + Globals.userAge + ", " + Globals.eThnic + ", " + Globals.maleOrFem  + ", " + " In the first game you scored, " + Globals.score + ", " + " In the second game you scored." + Globals.score2);
        File file = new File("ResultsSaves.txt");

        // if file exists, then overwrite current saved file with new
        if (!file.exists()) {
            file.createNewFile();
        }

        FileWriter fw = new FileWriter(file.getAbsoluteFile(), true);
        BufferedWriter bw = new BufferedWriter(fw);
        bw.write(content);
        bw.newLine();
        bw.close(); 

        JOptionPane.showMessageDialog(null, "Your details have been saved!");   

        }
    }
}

Answer 1

所以基本上你会问两件事：

如何计算得分的百分比？

你并没有真正说出一定比例，但我想你要计算score score + score2的分数（和score2类似）。

我将假设Globals.score和Globals.score2都属于double类型。因此，百分比将计算为

double scorePercentage = 100 * Globals.score / (Globals.score + Globals.score2)

如何打印标题＆＃39; row＆＃39;在保存游戏结果之前？

嗯......真的和你保存游戏结果一样。由于标题是静态知道的，因此更容易。

但是，如果我没有弄错，创建一个单独的BufferedWriter来打印标题，结果将不会附加到文件中，而是覆盖以前的输出。我的建议是将BufferedWriter实例化为WriteFile初始化的一部分。 WriteFile类看起来像这样：

public final class WriteFile {

    private WriteFile(){/* This is a class with only static methods - make the constructor private to prohibit instantiation */}

    public static final String heading = "UserID, First Name, Last Name, Age, Ethnic, Gender, Score Game 1, Score Game 2";

    private static BufferedWriter bufferedFileWriter = null;

    static {
        File file = new File("ResultsSaves.txt");

        // if file exists, then overwrite current saved file with new
        if (!file.exists()) {
            file.createNewFile();
        }

        FileWriter fw = new FileWriter(file.getAbsoluteFile(), true);
        bufferedFileWriter = new BufferedWriter(fw);
    }

    private static String getGameResult() {
        return Globals.IDUser + ", " + Globals.firstName + ", " + Globals.lastName + ", " + Globals.userAge + ", " + Globals.eThnic + ", " + Globals.maleOrFem  + ", " + " In the first game you scored, " + Globals.score + ", " + " In the second game you scored." + Globals.score2; 
    }

    /** Not really needed, but there to stay true to the original design */
    public static void printHeading() throws IOException {
        save(heading); 
    }

    /** Not really needed, but there to stay true to the original design */
    public static void saveGame() throws IOException {
        save(getGameResult()); 
    }

    public static void save(String content) throws IOException {

        bufferedFileWriter.write(content);
        bufferedFileWriter.newLine();
        // flush to get the contents stored to file
        bufferedFileWriter.flush();  

        JOptionPane.showMessageDialog(null, "Your details have been saved!");   

        }
    }

    /** Don't close the writer before all desired content is written. */
    public static void close() throws IOException {
        bufferedFileWriter.close(); 
    }
}

友好建议：使用全局变量时要小心。他们可能成为调试噩梦的地狱。您应该更喜欢将它们作为参数传递给您的方法。