Java: Lang 错误 "ComSci" 无法解析为类型

Question

为我的学校做了一个简单的招生计划。但是收到错误-

线程“main”中的异常java.lang.Error：未解决的编译问题：

Comsci cannot be resolved to a type
    at Add.main(Admission.java:104)

我已经多次尝试检查代码，但似乎没有发现任何问题。我对 java 有点陌生，但仍在学习。任何帮助将不胜感激。

这里是源码-

import java.util.*;
import java.io.*;

class Admission{
    String name = new String();
    float phy, che, mat, cs, eng, hin;
    float tot, perc;

    void enter(){
        Scanner ent = new Scanner(System.in);

        System.out.println("\nEnter your name:");
        name = ent.nextLine();

        System.out.println("\nEnter your 12th Std marks (x/100)");
        System.out.print("Physics- ");
        phy= ent.nextInt();
        System.out.print("\nChemistry- ");
        che= ent.nextInt();
        System.out.print("\nMaths- ");
        mat= ent.nextInt();
        System.out.print("\nComputers- ");
        cs= ent.nextInt();
        System.out.print("\nEnglish- ");
        eng= ent.nextInt();
        System.out.print("\nHindi- ");
        hin= ent.nextInt();
    }
}

class ComSci extends Admission{
    void calculate(){
        tot=phy+mat+che+cs+eng+hin;
        perc=(tot/600)*100;

        System.out.println("Your total marks= "+tot +"/600");
        System.out.println("Your percentage= "+perc +"%");

        if(perc>60){
            System.out.println("You are eligible for admission. Please contact Department ffice :)");
        }else{
            System.out.println("You are not eligible. Percentage needed: 60%");
        }
    }
}

class VisCom extends Admission{
    void calculate(){
        tot=phy+mat+che+cs+eng+hin;
        perc=(tot/600)*100;

        System.out.println("Your total marks= "+tot +"/600");
        System.out.println("Your percentage= "+perc +"%");

        if(perc>50){
            System.out.println("You are eligible for admission. Please contact Department ffice :)");
        }else{
            System.out.println("You are not eligible. Percentage needed: 50%");
        }
    }
}

class FoodSci extends Admission{
    void calculate(){
        tot=phy+mat+che+cs+eng+hin;
        perc=(tot/600)*100;

        System.out.println("Your total marks= "+tot +"/600");
        System.out.println("Your percentage= "+perc +"%");

        if(perc>40){
            System.out.println("You are eligible for admission. Please contact Department ffice :)");
        }else{
            System.out.println("You are not eligible. Percentage needed: 40%");
        }
    }
}

class Add{
    public static void main (String[] args){
       
        int choice;

        Scanner ch = new Scanner(System.in);
                                    

        System.out.println("Which course do want to enrol in?");
        System.out.println("1)CS 2)Viscom 3)FSPM");
        choice=ch.nextInt();

        switch(choice){

            case 1:
                ComSci CS = new Comsci();
                CS.enter();
                CS.calculate();
                break;

            case 2:
                VisCom VC = new VisCom();
                VC.enter();
                VC.calculate();
                break;

            case 3:
                FoodSci FSPM = new FoodSci();
                FSPM.enter();
                FSPM.calculate();
                break;

            default:
                System.out.println("Wrong choice entyer again");
            

        }

    }
}

对这个问题有什么建议吗？？

Answer 1

您的大写字母打错了。 Line 104 应改为：

ComSci CS = new ComSci();

… 在 new Compsci.

中更改为大写 S

Java: Lang 错误 "ComSci" 无法解析为类型

Java: Lang error "ComSci" cant be resolved to a type

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