Thread: Hey! can anyone help me . i cant find an error (beginner)

hi, i m receiving error

Please help me. and do tell me where i was wrong
Thank you in advance

Welcome to National Database
Exception in thread "main" java.lang.NullPointerException
at general.main(general.java:46)

import java.util.Scanner;
public class general {
 
	String name;
	String fname;
	int dob;
	char sex;
	public general()
	{
		this("no","no",0,'n');
	}
 
	public general(String string, String string2, int i, char c) {
		// TODO Auto-generated constructor stub
	}
 
	protected void addgeninfo()
	{
		Scanner inp = new Scanner(System.in);
 
		System.out.println("Please Enter your name:");
		name=inp.next();
 
		System.out.println("Please Enter your Father's name:");
		fname=inp.next();
 
		System.out.println("Please Enter your dob(format:DDMMYYYY):");
		dob=inp.nextInt();
 
		String temp;
		System.out.println("Please Enter your sex(m/f):");
		temp=inp.next();
		sex =temp.charAt(0);
 
	}
 
	public static void main(String[] asgc)
	{
		int totnationals=10;
		System.out.println("Welcome to National Database");
		general nationals[] = new general[totnationals];
 
 
		for( int i =0; i <10; i++)
		{
			nationals[i].addgeninfo();
		}
 
 
	}
}