Method does not exist or incorrect signature: void show() from the type Child2

Question

Line: 2, Column: 3 Method does not exist or incorrect signature: void show() from the type Child2.

Above is the error im getting. How can I rectify it?

public Virtual class Parent2 {
public string name;
    public string branch;
    public virtual void show(){
        name='kiran';
        branch='vijayawada';
    }
    public void invoke(){
        system.debug('Name:'+name);
        system.debug('Branch:'+branch);
    }

}
public class Child2 Extends parent2 {
    public integer age;
    public String phone;
    public override Void Show(){
        name='ravi';
        age=90;
        branch='mpl';
        phone='1111';
    }
    public void Display(){
       system.debug('Name:'+name);
       system.debug('Age:'+age);
       system.debug('Branch:'+branch);
       system.debug('Phone:'+phone);
    }
}

Execute:

Child2 c=new Child2();
C.show();
C.display();

Answer 1

I believe the issue is due to our use of the Virtual keyword in the Parent2 definition. According to the documentation, classes defined in Execute Anonymous are considered virtual by default.

Be removing the virtual keyword from the class definition, I was able to get this to compile and run as expected in my environment.

public class Parent2 {
public string name;
    public string branch;
    public virtual void show(){
        name='kiran';
        branch='vijayawada';
    }
    public void invoke(){
        system.debug('Name:'+name);
        system.debug('Branch:'+branch);
    }

}
public class Child2 Extends parent2 {
    public integer age;
    public String phone;
    public override Void Show(){
        name='ravi';
        age=90;
        branch='mpl';
        phone='1111';
    }
    public void Display(){
       system.debug('Name:'+name);
       system.debug('Age:'+age);
       system.debug('Branch:'+branch);
       system.debug('Phone:'+phone);
    }
}

Child2 c=new Child2();
C.show();
C.display();