java - Constructor in Abstract method -


this question has answer here:

why there constructor in abstract method when abstract method cant me instantiated?it confusing me..

code tutorialspoint.com

public abstract class employee  {    private string name;    private string address;    private int number;    public employee(string name, string address, int number)     {       system.out.println("constructing employee");       this.name = name;       this.address = address;       this.number = number;    }    public double computepay()    {      system.out.println("inside employee computepay");      return 0.0;    }    public void mailcheck()    {       system.out.println("mailing check " + this.name        + " " + this.address);    }     public string tostring()    {       return name + " " + address + " " + number;    }    public string getname()    {       return name;    }    public string getaddress()    {       return address;    }    public void setaddress(string newaddress)    {       address = newaddress;    }    public int getnumber()    {      return number;    } }

now can try instantiate employee class shown below: 

* file name : abstractdemo.java */ public class abstractdemo     {        public static void main(string [] args)        {   /* following not allowed , raise error */       employee e = new employee("george w.", "houston, tx", 43);        system.out.println("\n call mailcheck using employee reference--");       e.mailcheck();     } }

when compile above class, gives following error:

   employee.java:46: employee abstract; cannot instantiated   employee e = new employee("george w.", "houston, tx", 43);                ^ 1 error

what m getting trouble if has show error why constructor in abstract classes reason?

it's there concrete subclasses use.

class subemployee extends employee {   public subemployee(string name, string address, int number) {     super(name, address, number);   }   ... }

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