Nullpointer exeption?

Question

I tried to make a gambling game, that either doubles your money or cuts it in half. I am getting a nullpointer exception error and I don't know why.
Here is the code:
package programlearning;
import java.util.Scanner;
import java.util.Random;
public class Gambling {
private static Scanner money;
private static Random Randomgen;
public static void main(String[] args) {
int y = money.nextInt();
System.out.println("Input starting money");
while(y > 1){
int x = Randomgen.nextInt(1);
if(x == 1){
y /= 2;
System.out.println("Your money" + y);
}
else y *= 2;
System.out.println("Your money" + y);
}

}
}

Answer 1

I'm not sure what you want to do, but I suppose you forgot to create money and Randomgen object, + Randomgen is a bad codding style, replace it with randomgen.
Here is your edited code:

import java.util.Scanner;
import java.util.Random;

public class Gambling {
private static Scanner money;
private static Random randomgen;

public static void main(String[] args) {
money = new Scanner(System.in);
randomgen = new Random();
System.out.println("Input starting money");
int y = money.nextInt();
while (y > 1) {
int x = randomgen.nextInt(1);
if (x == 1) {
y /= 2;
System.out.println("Your money" + y);
} else
y *= 2;
System.out.println("Your money" + y);
}

}
}