Need help on some "expected" errors

Question

I get two error when running this program. Can any help?
import java. text.DecimalFormat;// allow numbers to format to decimal form
import javax.swing.JOptionPane;
public class Grade.java {
     public static void main( String args[] )
          int inputcounter;
          int counter;
          char grades;
          double overall;     //varibale will store sum of grade in decimal form
          double grade;     // varibale will store grades in decimal form
          double average;     // varibale will store average of all three assignment in decimal form
          String data;
          overall = 0;
          inputcounter = 0;
          counter     = 2;
          data = JOptionPane.showInputDialog( "Enter grade score from 1 to 100" );
          grade= Double.parseDouble( data );
               if(     grade >100 ^ grade<1 ){           //will validate user input
               data = JOptionPane.showInputDialog( "Please re-enter your grade score from 1 to 100" );
               grade= Double.parseDouble( data );
                    while ( counter != 0 ) {
                    overall = overall + grade;
                    inputcounter = inputcounter + 1;
                    counter = counter - 1;           //insure user enters 3 sperate values
     DecimalFormat twoDigits = new DecimalFormat( "0.00" );
     average = (double) overall / inputcounter;
               //displays percentage grade
               JOptionPane.showMessageDialog( null,
               "Your overall percentage grade is " + twoDigits.format( average ), "Ending Percentage Grade", JOptionPane.PLAIN_MESSAGE );
                         if (average >= 90) {
          grades = 'A';
               } else if (average >= 80) {
          grades = 'B';
               } else if (average >= 70) {
          grades = 'C';
               } else if (average >= 60) {
          grades = 'D';
               } else {
          grades = 'F';
          //displays letter grade
          JOptionPane.showMessageDialog( null,
          "Your overall letter grade is " +grades, "Ending Letter Grade", JOptionPane.PLAIN_MESSAGE );
          System.exit( 0 );
}

Answer 1

First problem is public class Grade.java {
Should just be Grade and nothing else