Learning Java Program

if(condition 1)
statement 1;
else if (condition 2)
statement 2;
else if (condition 3)
statement 3;

else 

statement 4;

import java.util.Scanner;
class result
{
    public static void main(String[] args)
    {
           int mark;
           Scanner s=new Scanner(System.in);
           System.out.print("Enter your mark: ");                   
           mark=s.nextInt();
           if ( mark >= 90 )
           {
            System.out.println( "Grade A" );
           }
           else if ( mark >= 80 )
           {
            System.out.println( "Grade B" );
           }
           else if ( mark >= 70 )
           {
            System.out.println( "Grade C" );
           }
           else if ( mark >= 60 )
           {
            System.out.println( "Grade D" );
           }
           else if ( mark >= 50 )
           {
            System.out.println( "Grade E" );
           }
           else if ( mark >= 40 )
           {
            System.out.println( "Grade F" );
           }
           else 
           {
            System.out.println( "Failed" );
           }    
    }
}

Enter your mark: 56 

Grade E 

Enter your mark: 10 

Failed

if(condition)
statement 1;
else
statement 2;

import java.util.Scanner;
class result
{
    public static void main(String[] args)
    {
           int mark;
           Scanner s=new Scanner(System.in);
           System.out.print("Enter your mark: ");                   
           mark=s.nextInt();
           if ( mark <= 60 )
           {
                System.out.println("Fail");
           }
            else
           {
                System.out.println("Pass");
           }
    }
}

Enter your mark: 23
Fail
Enter your mark: 56
Pass

if(condition)
statement;

import java.util.Scanner;
class result
{
    public static void main(String[] args)
    {
           int mark;
           Scanner s=new Scanner(System.in);
           System.out.print("Enter your mark: ");                   
           mark=s.nextInt();
           if ( mark >= 40 )
           {
           System.out.println("Pass");
           }
    }

}

Enter your mark: 44 

Pass