java - 在 inputStr 上找不到符号

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已关闭。这个问题是 not reproducible or was caused by typos 。目前不接受答案。

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这个问题是由拼写错误或无法再重现的问题引起的。虽然类似的问题可能是 on-topic在这里，这个问题的解决方式不太可能帮助 future 的读者。

已关闭 8 年前。

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import javax.swing.JOptionPane;

public class TestScores
   {
     public static void main(String[] args)
     { 
        double testscore1, testscore2, testscore3, testscore4;
        double weigh1, weigh2, weigh3, weigh4;

        String testscore1Str, testscore2Str, testscore3Str, testscore4Str;

        testscore1Str = 
                    JOptionPane.showInputDialog("Enter first score: ");
        testscore1 = Double.parseDouble(testscore1Str);

        testscore2Str = 
                    JOptionPane.showInputDialog("Enter second score: ");
        testscore2 = Double.parseDouble(testscore2Str);

        testscore3Str = 
                    JOptionPane.showInputDialog("Enter third score: ");
        testscore3 = Double.parseDouble(testscore3Str);

        testscore4Str = 
                    JOptionPane.showInputDialog("Enter fourth score: ");
        testscore4 = Double.parseDouble(testscore4Str);

        weigh1 = testscore1 * 0.20;
        weigh2 = testscore2 * 0.35;
        weigh3 = testscore2 * 0.15;
        weigh4 = testscore2 * 0.30;

        outputStr = "testscore1: " + weigh1 + "/n" +
                    "testscore2: " + weigh2 + "/n" +
                    "testscore3: " + weigh3 + "/n" +
                    "testscore4: " + weigh4 + "/n";

        JOptionPane.showMessageDialog(null, outputStr, "TestScores",
        JOptionPane.INFORMATION_MESSAGE);

        System.exit(0);
        }

}

我在“outputStr”上遇到找不到符号错误。

通常这只是一个简单的拼写错误，但我不知道问题出在哪里。任何指向正确方向的指示将不胜感激。

谢谢!

Answer 1

在这一行中:

outputStr = "testscore1: " + weigh1 + "/n" +
            "testscore2: " + weigh2 + "/n" +
            "testscore3: " + weigh3 + "/n" +
            "testscore4: " + weigh4 + "/n";

您无法初始化outputStr。试试这个:

String outputStr = "testscore1: " + weigh1 + "/n" +
            "testscore2: " + weigh2 + "/n" +
            "testscore3: " + weigh3 + "/n" +
            "testscore4: " + weigh4 + "/n";

以后，在 Stack Overflow 上提问之前，请尝试进行一些基本的调试。查看How to Debug Small Programs作者:埃里克·利珀特。另外，写一个Minimal, Complete, and Verifiable example确实有助于识别错误。

IDE 还会在您创建此类错误时明确指出这些错误。 NetBeans和 IntelliJ IDEA是两个很好的 Java IDE。