[Mr.Ahmad]

وعليكم السلام ورحمة الله وبركاته .

الفقرة الأخيرة من السؤال غير واضحة ... ولكن تم برمجتها على ما فهمته :

import java.util.*;
import java..*;

 
class Account
{
    public String GetFirstLetter (String name)
    {
        String n1,n2,n3;
        n1 = name.substring(0, 1);
        name = name.substring(name.indexOf(" ") +1, name.length());
        n2 = name.substring(0, 1);
        name = name.substring(name.indexOf(" ") +1, name.length());
        n3 = name.substring(0, 1);
        return n1+n2+n3;
    }
 
    public String Today ()
    {
        Date d = new Date();
        SimpleDateFormat sdf = new SimpleDateFormat("ddMMyyyy");
        return sdf.format(d);
    }
 
    public String Number()
    {
        DecimalFormat df = new DecimalFormat("0.00");
        int x = 0 + (int) (Math.random() * (10 - 0));
        float y = 0 + (float) (Math.random() * (1 - 0));
        double p = Math.pow((double)y, (double)x);
        System.out.println("Random Number : " + p);
        float value = Float.parseFloat(df.format(p));
        value = Math.abs(value);
        value = Math.round(value);
        int t = (int) value;
        String hex = Integer.toHexString(t);
        return hex;
    }
}
public class Main {
 
    public static void main(String[] args) {
        Account ac1 = new Account();
        Scanner sc = new Scanner(System.in);
        System.out.print("Please enter your full name : ");
        String name = sc.nextLine();
        System.out.println("--------------");
        System.out.println("Name : " + ac1.GetFirstLetter(name));
        System.out.println("Today : " + ac1.Today());
        System.out.println("Final Number : " + ac1.Number());
    }
}

بالتوفيق .