`Optimal solution for this problem | Easy to Understand

abstract class Book{
   abstract void setBooktitle(String s);
}
class MyBook extends Book{
    @Override
    void setBooktitle(String s){
        System.out.println("The title is: " + s);
    }
}

public class Solution {

    public static void main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
        Scanner sc = new Scanner(System.in);
        String str = sc.nextLine();
        MyBook book = new MyBook();
        book.setBooktitle(str);

    sc.close();
}

} `

import java.util.*; abstract class Book{ String title; abstract void setTitle(String s); String getTitle(){ return title; } }

//Write MyBook class here

// class Mybook, khong can public--Step1 class MyBook extends Book{ // dung tu khoa extend de ke tua lop abstract Book--Step2 @Override // ghi de method setTitle voi tham so, va tao body goi s --Step3 public void setTitle(String s){ this.title = s; }

}

public class Main{

public static void main(String []args){
    //Book new_novel=new Book(); This line prHMain.java:25: error: Book is abstract; cannot be instantiated
    Scanner sc=new Scanner(System.in);
    String title=sc.nextLine();
    MyBook new_novel=new MyBook();
    new_novel.setTitle(title);
    System.out.println("The title is: "+new_novel.getTitle());
    sc.close();

}

}

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