need help in this code ????

[eng.master89]

I'm new in the world of Java and i make a program to calculate the score of students in the materials, but I want to break when the user enters
a negative value???

import java.util.Scanner;
public class StudentGrade{	
	public static void main(String[] args){

		double x,y,z,w,v ;
		Scanner kb = new Scanner(System.in);

		System.out.print("\n Score of Subject 1: ");
		x = kb.nextDouble(); 
		
                System.out.print("\n Score of Subject 2: ");
		y = kb.nextDouble();
		
                System.out.print("\n Score of Subject 3: ");
		z = kb.nextDouble();
		
                System.out.print("\n Score of Subject 4: ");
		w = kb.nextDouble();
		
                System.out.print("\n Score of Subject 5: ");
		v = kb.nextDouble();
		
                double total = w+v+x+y+z;
		double average = total / 5.0;
		System.out.print("\n Total Score = "+total+" \t|Average = "+average);
		System.out.println("\n Good Bye!!!");

	}
}

[Norm]

but I want to break when the user enters a negative value???

Please explain what you mean by "break".
You need to learn how to use an array and a loop.
The break statement will cause the execution to exit the loop.

[eng.master89]

i mean when entering a negative value the program tells you that it's not allowed to use negative values

thanks

[Norm]

What do you want to do if there is a negative value?
You can use an if statement to test if the value is negative and output a message.
Then what?

[eng.master89]

thanks a lot

i did it now

i'm studying with my self would you mind to tell me What the best books that you advise me to study them ?

[Norm]

Sorry, I learned java a long time ago and do not have any current books to recommend.