无法编译的源代码-错误的sym类型: [英] Uncompilable source code - Erroneous sym type:

问题描述

第14行发生了错误.

线程主"中的异常java.lang.RuntimeException:无法编译源代码-错误的符号类型:

Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - Erroneous sym type:

很难找到解决方法.

package example;

public class Num
{
    public static void main(String [] args) 
    {
    String s = "42";
        try 
        {
            s = s.concat(".5"); 
            double d = Double.parseDouble(s);
            s = Double.toString(d);
            int x = (int) Math.ceil(Double.valueOf(s).doubleValue()); //Line 14
            System.out.println(x);
        }
        catch (NumberFormatException e) 
        {
            System.out.println("Wrong Number");
        }
    }
}

推荐答案

您提供的代码在我的计算机上运行良好.

The code you provided runs fine on my computer.

我猜您正在使用Netbeans，并且可能会受到错误的影响.试试这个:

I'm guessing you are using Netbeans and may be affected by a bug. Try this:

打开项目属性，选择Build-Compiling，取消选中保存时编译"，然后重新运行应用程序.这样可以确保在运行之前重新编译所有源代码.

Open the project properties, select the Build-Compiling, uncheck "Compile on save" and rerun the application. This will make sure all your source code becomes recompiled before running it.

链接: https://forums.netbeans.org/topic43241.html

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