Thread: problem with inheritance

Hello, I have problem with inheritance , when I try to run the program , I get

PHP Code:

Enter the  frist  and last name of student
dd
dd
dd
dd dd 


not the full name ?

3 strings


the main method

PHP Code:

 public static void main(String[] args) {
      Scanner in = new Scanner (System.in);

       System.out.println("Enter the  frist  and last name of student" );
       
    String inf=in.nextLine();
       String infs=in.nextLine();
        String infss=in.nextLine();
 NewClass account= new NewClass(inf,infs,infss);
 
 

 
  
     
     System.out.print(account);
  
  
 
       
       
 } // end main 


the class method

PHP Code:

public class Account   {
 private String name1;
private String name2;
 


public  Account(String a1 ,String a2 ) {
 
name1=a1;
name2=a2; 



}
 

public void setName1(String a1){

name1=a1;

}

public void setName2(String a2){

name2=a2; 

}


 


 

public String getName1(){

return name1;


}
public String getName2(){

return name2;
}



     public  String toString(){
     
     return String.format("%-1s %s   ",name1, name2);
     } 


and the class inheritance method

PHP Code:

public class NewClass extends  Account {
    
    private String name3;
    public NewClass(String name1,String name2,String name33){
 
    super(name1,name2);
    
        getstring(name33);
    
    
    }
    
    
 

    
      
    public void getstring(String name33){
    
    name3=name33;
    
    
    
    }
    
    public String getString(){
    
    
    return name3;
    
    }
      
    public String forstring(){
    
    
    return String.format(" %s  just to know if it works  ",super.toString(),name3 );
    } 


what should I do to fix this problem ??

I haven't looked over the entirety of your code, as i am a bit pressed on time. What i have found though is that you did not override the toString() method of the Account class. So automatically, Java will move up to the parent. Since there is no toString in NewClass, the toString from Account is used, which doesn't display the information in NewClass.

Originally Posted by Norm

That part of the printout is from the default toString() method for the NewClass method. You need to override the toString() method in the NewClass class and have it return the String you want to see.

It's my first time using it , so it don't know how to override it

I watched
Java Programming Tutorial - 49 - Inheritance - YouTube

to understand more , but he said just copy the method that you want to override , and I tried it , but no use .

So please how to do it ?

Do some more research on Overriding & Overloading methods in Java.

Overriding is done when a subclass has the same method name & signature as the parent class, therefore replacing it. To call the parent's class you overwrote, you'd then need to do super.toString().

Originally Posted by Mitch1337

Do some more research on Overriding & Overloading methods in Java.

Overriding is done when a subclass has the same method name & signature as the parent class, therefore replacing it. To call the parent's class you overwrote, you'd then need to do super.toString().

I understood my problem . thank you very much , the program works fine now .