編寫了以下幾行代碼，旨在將 2 個值插入到對話框中，并分配給 2 個不同的變量。假設我插入 22，那么它應該在文本字段中顯示為 2x2 = 4，相反，它會打印類似 50 x 50 = 2500 的內(nèi)容。String a = JOptionPane.showInputDialog("Qual cálculo deseja fazer? (AB = A x B)", "AB");   aNum = a.charAt(0);   bNum = a.charAt(1);   int cNum = aNum*bNum;    Game.getNumbers(aNum, bNum);    JOptionPane.showInputDialog(aNum, bNum);    TF1.setText(Game.First() +" x "+ Game.Second() +" = "+ cNum);涉及班級：public class Game1 {private int first = 0;private int second = 0;private int score = 0;private int hiScore = 0;public void numTotalCheck(int a){    String option1 = null;    char option = 0;    do{    if (a == (first*second)){        JOptionPane.showMessageDialog(null, "Parabéns. Você acertou!");        score = score + 100;        if(score > hiScore){            hiScore = score;        }    }else{        score = score - 100;        if(score > hiScore){            hiScore = score;        }        JOptionPane.showMessageDialog(null, "Errado!");        option1 = JOptionPane.showInputDialog("Deseja jogar novamente? <S/N>");        option = option1.charAt(0);    }    }while((option == 's') || (option == 'S'));}public void getNumbers(int a, int b){    first = a;    second = b;}public int First(){    return first;}public int Second(){    return second;}結果：“22”輸入的結果。