help me with my code

[cybershark]

So I'm new at JAVA , I'm trying to make an program to calculate my grade on an specific class .
Heres the code:

import java.util.Scanner; 

public class nota {
	public static void main (String [] args){
		Scanner sc = new Scanner(System.in);
		
		String name; 
		String surname;
		float test1;
		float test2;
		float test3;
		int provimi; // FINAL TEST
		int grade; 
		
		
		
		System.out.print("Name of student: ");
		name = sc.nextLine();
		System.out.print("Surname of student: ");
		surname = sc.nextLine();
       System.out.print("How much % has the student on the first test?: ");
        test1 = sc.nextFloat();
        if (test1>15){
		System.out.println("Student can't get more than 15% in the first test!!");
				}		
        System.out.print("How much % has the student on the second test?");
		
  

  }
	

 
 
 }

So basicly what I want to make is when the user types "16 or more" on the first test the output to show that "Student can't get more than 15% in the first test!!" and then repeat "How much % has the student on the first test?: " until the user types "15 or lower" so every time the user types "16,17 or more " the output to show "Student can't get more than 15% in the first test!!" until the answer is right .

I don't care if the program calculates my grade good or wrong I just want to make some practice and experimenting with code .

I think the code to do what I'm asking is "while" and true and false but I dont understand "WHILE" so good .
Thank you

[Norm]

Moved to New section.

What problems are you having with your code? If errors or wrong results, copy the console's contents and paste it here to show us what the program is doing.

Please edit your post and wrap your code with code tags:

[code]
**YOUR CODE GOES HERE**
[/code]

to get highlighting and preserve formatting.

Note: It be useful for anyone reading the code if the description of what you want the code to do was included in the source code as comments. Then the description and code would all be in one place.

[cybershark]

So I'm new at JAVA , I'm trying to make an program to calculate my grade on an specific class .
Heres the code:

import java.util.Scanner; 

public class nota {
	public static void main (String [] args){
		Scanner sc = new Scanner(System.in);
		
		String name; 
		String surname;
		float test1;
		float test2;
		float test3;
		int provimi; // FINAL TEST
		int grade; 
		
		
		
		System.out.print("Name of student: ");
		name = sc.nextLine();
		System.out.print("Surname of student: ");
		surname = sc.nextLine();
       System.out.print("How much % has the student on the first test?: ");
        test1 = sc.nextFloat();
        if (test1>15){
		System.out.println("Student can't get more than 15% in the first test!!");
				}		
        System.out.print("How much % has the student on the second test?");
		
  

  }
	

 
 
 }

So basicly what I want to make is when the user types "16 or more" on the first test the output to show that "Student can't get more than 15% in the first test!!" and then repeat "How much % has the student on the first test?: " until the user types "15 or lower" so every time the user types "16,17 or more " the output to show "Student can't get more than 15% in the first test!!" until the answer is right .

I don't care if the program calculates my grade good or wrong I just want to make some practice and experimenting with code .

I think the code to do what I'm asking is "while" and true and false but I dont understand "WHILE" so good .
Thank you

HERE I REQOUTED and added tags

[cybershark]

I dont have any erros . I'm just asking how can I do something

[Norm]

Ok, I'm looking in the code to see what it is supposed to do and don't see any comments describing anything.

until the answer is right .

Use a while loop when the end of the looping is not known before the loop starts.