java scanner programming help

Write a program that accepts the letter grades for a student, calculates the student's gpa, and prints it out, along with one of the following five messages:

Eligible
Ineligible, taking less than 4 classes
Ineligible, gpa below 2.0
Ineligible, gpa above 2.0 but has F grade (note: gpa >= 2.0)
Ineligible, gpa below 2.0 and has F grade

2. Your program must use an appropriate sequence of nested if-else statements to print out the appropriate message.

3. The message "Ineligible, taking less than 4 classes" has priority over the other 3 ineligible cases.

4. The class will not ask the user for how many grades are in a student's report card. The program will continue to read grades until a non-grade character is input. At this point, some type of loop will cease and the program prints the GPA value and the eligibility message.

5. Example of run output: GPA = 3.75 Eligible

6. You do not have to print out any of the individual grades.

7. Your program should allow input of grades in either upper or lower case.

Code Java:

---

 
import java.util.Scanner;
public class grades {
 
	/**
	 * @param args
	 * @return 
	 */
	public static  void main(String[] args);
 
		// TODO Auto-generated method stub
		Scanner in = new Scanner(System.in);
		double GPA=in.nextDouble();
		System.out.println("GPA = ");
		if ( GPA == 4.0){
			System.out.println("A");
 
		}else{
				if (GPA >=3.0 || < 4.0)
					System.out.println("B");
 
		}else{
				if (GPA >=2.0 || < 3.0)
					System.out.println("C");
 
		}else{ 
				if (GPA >=1.0 || < 2.0)
					System.out.println("D");}
	else {
		if (GPA == 0){
			System.out.println("F");
	}

---

iwas just wondering from my piece of code so far if this is correct and the syntax of my else if statements are also correct. i seem to have been getting stuck a very good amount of times so help is appreciated thank you

Cross posted, with several responses before this was posted here
scanner questions - Java Forums
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db

Hello socboy6579,

Welcome to the forums.

There are lot's of problems with your code.

You should be doing something like this:

Code Java:

---

import java.util.Scanner;
 
public class grades {
 
	public static void main(String[] args){
 
    Scanner in = new Scanner(System.in);
 
    double GPA=in.nextDouble();
 
    System.out.println("GPA = ");
 
    if ( GPA == 4.0){
        System.out.println("A");
 
    }
    else if (GPA >= 3.0 || GPA < 4.0){
                System.out.println("B");
    }
 
    else if (GPA >= 2.0 || GPA < 3.0){
                System.out.println("C");
    }
 
    else if (GPA >= 1.0 || GPA < 2.0){
                System.out.println("D");
    }
    else if (GPA == 0){
        System.out.println("F");
    }
}
}

---