Problem when Running a java program

Question

I am new to Java. I have installed JDK 1.3.1 on my machine. have setup the class path also. My program complies fine but when i am running it I am getting the following error.
Exception in thread "main" java.lang.NoClassDefFoundError: InsertSuppliers
Press any key to continue . . .
I am pasting my java program underneath. Can anybody please help me?
import java.sql.*;
import java.lang.*;
import java.util.*;
import java.io.*;
public class InsertSuppliers
     public static void main(String[] args)
throws IOException
          System.out.println("iuysuiysuidyfsduyf");
          String url = "jdbc:odbc:CafeJava";
          Connection con;
          Statement stmt;
          String query = "select SUP_NAME, SUP_ID from SUPPLIERS";
          try {
               Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
          } catch(java.lang.ClassNotFoundException e) {
               System.err.print("ClassNotFoundException: ");
               System.err.println(e.getMessage());
          try {
               con = DriverManager.getConnection(url,
                                             "Admin", "duke1");
               stmt = con.createStatement();
               stmt.executeUpdate("insert into SUPPLIERS " +
     "values(49, 'Superior Coffee', '1 Party Place', " +
                    "'Mendocino', 'CA', '95460')");
               stmt.executeUpdate("insert into SUPPLIERS " +
                    "values(101, 'Acme, Inc.', '99 Market Street', " +
                    "'Groundsville', 'CA', '95199')");
               stmt.executeUpdate("insert into SUPPLIERS " +
     "values(150, 'The High Ground', '100 Coffee Lane', " +
                    "'Meadows', 'CA', '93966')");
               ResultSet rs = stmt.executeQuery(query);
               System.out.println("Suppliers and their ID Numbers:");
               while (rs.next()) {
                    String s = rs.getString("SUP_NAME");
                    int n = rs.getInt("SUP_ID");
                    System.out.println(s + " " + n);
               stmt.close();
               con.close();
          } catch(SQLException ex) {
               System.err.println("SQLException: " + ex.getMessage());
}

Answer 1

Your error occurs because java can not find a file named InsertSuppliers.class in the Classpath. there are 3 basic ways to make this work. Assume you compiled InsertSuppliers so that the InsertSuppliers.class file is in a directory c:\myjava (I am assuming Windows).
1. Do not set your System Classpath. CD to the c:\myjava directory. Enter "java InsertSuppliers"
2. Set your System Classpath = .;c:\myjava and enter "java InsertSuppliers" from any directory.
3. Enter "java -classpath c:\myjava InsertSuppliers" from any directory.
Of course, none of these will work if InsertSuppliers.class file doesn't exist in c:\myjava. And remember that class names are case sensitive.