您使用了多少次語句：JOptionPane.showMessageDialog？如果您的答案不止一次，請返回并修改您的代碼，以便您只使用一個 JOptionPane.showMessageDialog提示：考慮使用名為 output 的 String 類型變量代碼如果（信用> = 120） { JOptionPane.showMessageDialog(null,"You've graduated!"); }//end if else if(credit >= 90) { JOptionPane.showMessageDialog(null,"You're a senior."); }//end if else if(credit >= 60) { JOptionPane.showMessageDialog(null,"You're a junior."); }//end if else if(credit >= 30) { JOptionPane.showMessageDialog(null,"You're a sophomore."); }//end if else if(credit >=0) { JOptionPane.showMessageDialog(null,"You're a freshment."); }//end if else { JOptionPane.showMessageDialog(null,"invalid input");
2 回答
POPMUISE
TA貢獻1765條經驗 獲得超5個贊
//不要忘記導入JOptionPane庫
//我也不知道你是如何使用你的信用變量 public class prograde { public void showJoption(String position) { JOptionPane.showMessageDialog(null, position); }
public static void main(String[] args)
{
//this is the class object that you can use to call the showJoption() method.
prograde display = new prograde();
if(credit >= 120)
{
display.showJoption("You've graduated!");
}
else if (credit >= 90)
{
display.showJoption("You're a senior.");
}
else if (credit >= 60)
{
display.showJoption("You're a junior.");
}
else if (credit >= 30)
{
display.showJoption("You're a sophomore.");
}
else if (credit >= 0)
{
display.showJoption("You're a freshment.");
}
else {
display.showJoption("invalid input");
}
}
}
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