Please help me understand my errors.

Exception in thread "main" java.lang.Error: Unresolved compilation problems: Syntax error on token "else", delete this token Syntax error, insert "}" to complete Block Syntax error on token "}", delete this token Syntax error, insert "}" to complete ClassBody

at TestGrade.main(TestGrade.java:39)

GradeException

public class GradeException extends Exception { static final String[] StuGrade = new String[]{"A", "B", "C", "D", "F"}; //Constructor without args public GradeException() { super("GradeException"); } //Constructor new expectations public GradeException(String message) { super(message); } }

TestGrade

import java.util.Scanner; import java.util.*; import java.io.*;

public class TestGrade extends GradeException { public static void main(String args[]) throws Exception { //Declare variables int i = 0; int a = 0; int ID[] = new int[10]; int j = 0; String Grade1[] = new String[10]; String Grade = "0"; int StudentID = 0; try { for (i = 0; i < ID.length; i++) { //Student id input System.out.println("Enter sudent ID: "); Scanner id = new Scanner(System.in); String sl = id.nextLine(); StudentID = Integer.parseInt(sl); //Grade input System.out.println("Enter the grade: "); Scanner g = new Scanner(System.in); Grade = g.nextLine(); GradeException GE = new GradeException(); boolean con = Arrays.asList(StuGrade).contains(Grade); if (con == true); System.out.println("Valid Grade"); else { // Throw GradeException System.out.println("Invalid Grade"); throw new GradeException(); } //Reassign values to grade ID[i] = StudentID; Grade1[i] = Grade; } //Display results System.out.println(" "); System.out.println("Consolidate Grade"); System.out.println("==================="); System.out.println("ID Grade"); //Display result up to end of ID length for (i = 0; i < ID.length; i++) { System.out.println(" " + ID[i] + " " + Grade1[i]); } } //Catch block catch (GradeException ex) { System.out.println(ex.getMessage()); ID[i] = StudentID; Grade1[i] = "I"; for (i = 0; i < ID.length; i++) { System.out.println(" " + ID[i] + " " + Grade1[i]); } catch (Exception ex) { System.out.println(ex.getMessage()); } } }