如何声明子类别 java

Question

I want to create a subcategory for this option. I can't create. When I select 1, I want it to show me a few subcategories.

package Javaapplication7;

import java.util.ArrayList;
import java.util.Scanner;

public class JavaApplication7 {

        static Scanner input = new Scanner (System.in);
        static ArrayList<Employee> emplList = new ArrayList<Employee>();

        public static void main(String[] args) {
            while(true) {

                System.out.println("1.Register employee");
                System.out.println("2View employee");
                System.out.println("3.Remove employee");
                System.out.println("4.Generate payslips");
                System.out.println("5.Exit");
                System.out.println("input option: ");
                int option = input.nextInt(); input.nextLine();



                switch(option){     
                    case 1:    
                        System.out.println("Register is selected ");
                        System.out.println("provide name: ");
                        String name = input.nextLine();
                        double salary= input.nextInt(); input.nextLine();
                        Employee emp = new employee(name,salary);
                        emplList.add(emp);
                        System.out.println("Regsitered:");
                }
            }
        }

}

So when I choose 1 I want to show 1... , 2... , 3.... , 4....

Answer 1

However your program have so many typo and syntax error but its nice at least you done something and come up here with code.

this code is not so best but i think it will help you:)

import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;

public class Test {
 static Scanner input = new Scanner (System.in);


public static void main(String[] args) throws IOException {



    int inputOption;
    do { 

        System.out.println("Choose Your Option :");
        System.out.println("1.Register employee");
        System.out.println("2. View employee");
        System.out.println("3.Remove employee");
        System.out.println("4.Generate payslips");
        System.out.println("5.Exit");
        System.out.println("input option: ");

       inputOption = input.nextInt(); 


       switch (inputOption) {
            case 1:


                System.out.println("Register is selected ");
                System.out.println("Do your Task"); 

                System.out.println("Choose Your Option :");
                System.out.println("1.Option 1");
                System.out.println("2.Option 2"); 
                System.out.println("5.Exit"); //keep 5 for exit
                System.out.println("input option: ");

                int inputSubOption = input.nextInt(); 

                switch (inputSubOption) {
                case 1:
                        System.out.println("1 Sub category Taks");
                        System.out.println("Press any number other then 5 to continue.....");
                        int exit = input.nextInt();
                        if( exit ==5 ) {System.exit(0); }
                    break;
                case 2:
                    System.out.println("2 Sub category Taks");
                break;

                default:
                    break;
                }

                break;

            default:
                break;
       }


    } while ( inputOption !=5 ) ;



}

}