IntelliJ IDEA运行Java文件异常：启动其他文件且构建失败求助

所得税计算Java代码 #

import java.util.Scanner;
public class incometax {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter your income in lacs ");
        float tax=0;
        float income= sc.nextFloat();
        if (income < 2.5f) {
            System.out.println("You do not need to pay tax");
        } else if (income > 2.5f && income <= 5.0f) {
            tax = tax + 0.0f * (income - 2.5f);
            System.out.println("You don't need to pay taxes");
        } else if (income > 5f && income <= 7.5f) {
            //tax=tax+0.0f*(income-5f);
            tax = tax + 0.1f * (income - 5f);
        } else if (income >= 7.5f && income <= 10f) {
            //tax=tax+0.0f*(income-2.5f);
            tax = tax + 0.1f * (income - 5f);
            tax = tax + 0.15f * (income - 7.5f);
        } else if (income > 10f && income <= 12.5f) {
            tax = tax + 0.1f * (income - 5f);
            tax = tax + 0.15f * (income - 7.5f);
            tax = tax + 0.2f * (income - 10f);
        } else if (income > 12.5f && income <= 15f) {
            tax = tax + 0.1f * (income - 5f);
            tax = tax + 0.2f * (income - 7.5f);
            tax = tax + 0.2f * (income - 10f);
            tax = tax + 0.25f * (income - 12.5f);
            //tax=tax+0.15f*(income-10f);

        } else if (income > 15f) {
            tax = tax + 0.1f * (income - 5f);
            tax = tax + 0.15f * (income - 7.5f);
            tax = tax + 0.2f * (income - 10f);
            tax = tax + 0.25f * (income - 12.5f);
            tax = tax + 0.3f * (income - 15f);
        }
        System.out.println("Your total tax is :" +tax +"lacs");
    }
}

问题说明 #

上述代码逻辑无问题，但在IntelliJ IDEA中运行该文件或任意文件时，IDE会自动启动另一个无关文件，同时提示构建失败，求解决办法。

解决步骤 #

• 检查运行配置
  点击顶部菜单栏Run -> Edit Configurations...，在弹出窗口中找到当前使用的运行配置，确认Main class选项里指定的是incometax（你要运行的目标类），而非其他无关类。配置错误的话直接修改保存，再重新运行。

• 清理IDE缓存并重启
  点击File -> Invalidate Caches...，勾选Clear file system cache and local history，然后选择Invalidate and Restart。缓存损坏是IDE出现奇怪问题的常见诱因，重启后多数异常会修复。

• 检查模块与源代码目录配置
  右键项目根目录 -> Open Module Settings（或按快捷键F4），进入Modules标签页，确认你的源代码目录（比如src）被标记为蓝色的Sources。如果标记错误，右键该目录选择Mark Directory as -> Sources Root。

• 验证JDK配置
  同样在Project Structure窗口（F4），切换到Project标签，确认Project SDK选择的是本地已安装的正确JDK版本，Project language level与JDK版本匹配。未配置JDK的话，点击New -> JDK选择本地JDK路径。

• 重新导入项目
  若以上方法均无效，删除IDE自动生成的.idea文件夹和所有.iml文件，然后打开IntelliJ IDEA，选择File -> Open重新导入项目，让IDE重新生成配置文件。

内容的提问来源于stack exchange，提问作者Ashutosh Kumar