Program Problems...Import Statement needed?

Question

I am currently a student at DeVry University, and today I had my java class where my professor played a video on java programming for us made by a group called "CBTNuggets". The video went over Inner classes and the professor had us copy the code as the person in the video was typing it up. While attempting to compile the code I encountered several compiler errors on the second of the two files I had typed, I am going to first post the source code for both files, and then follow that with the compiler errors that were generated when I attempted to compile the code. If anyone is able to assist me with this I would greatly appreciate it, I think I may need to add an import statement ;however, I do not know how to implement one for user defined Inner Classes:
Invoice.java was the file that contained the Inner classes
* Invoice.java
* Created on February 1, 2007, 1:39 PM
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
* @author vontux
import java.util.*;
public class Invoice {
    private String strCustName;
    private String strCustAddr;
    private int intInvoiceNum;
    private Date dtInvoiceDate;
    /** Creates a new instance of Invoice */
   Invoice(String sCN, String sCA, int iN, Date dt)
       strCustName = sCN;
       strCustAddr = sCA;
       intInvoiceNum = iN;
       dtInvoiceDate = dt;
  class InvoiceItem //enclosed class
      private int intLineItem;
      private int intItemID;
      private int intUnits;
      private String strItemDesc;
      InvoiceItem(int li, int id,String desc, int iu)
          intLineItem = li;
          intItemID = id;
          intUnits = iu;
          strItemDesc = desc;
      public void showInvoice()
          System.out.println("Customer Name: " + Invoice.this.strCustName);
          System.out.println("Item Description: " + strItemDesc);
}UseInvoice.java is the class that is supposed to create objects of the Inner classes from Invoice.java and then run the code:
* UseInvoice.java
* Created on February 1, 2007, 1:51 PM
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
* @author vontux
import java.util.*;
public class UseInvoice {
    public static void main(String[] args)
        Date today = new Date();
        Invoice myInvoice = new Invoice("Robert Barrr", "12345 N. CBTNuggets Dr.", 321,today );
        Invoice.InvoiceItem myInvItem = myInvoice.new InvoiceItem(1, 345,"Toy Train", 2);
        myInvItem.showInvoice();
    /** Creates a new instance of UseInvoice */
    public UseInvoice() {
}And here are the compiler errors that I recieved:
C:\Documents and Settings\Matt\Desktop\temptemp\temp\UseInvoice.java:19: cannot
find symbol
symbol  : class Invoice
location: class UseInvoice
        Invoice myInvoice = new Invoice("Robert Barrr", "12345 N. CBTNuggets Dr.
", 321,today );
        ^
C:\Documents and Settings\Matt\Desktop\temptemp\temp\UseInvoice.java:19: cannot
find symbol
symbol  : class Invoice
location: class UseInvoice
        Invoice myInvoice = new Invoice("Robert Barrr", "12345 N. CBTNuggets Dr.
", 321,today );
                                ^
C:\Documents and Settings\Matt\Desktop\temptemp\temp\UseInvoice.java:20: package
Invoice does not exist
        Invoice.InvoiceItem myInvItem = myInvoice.new InvoiceItem(1, 345,"Toy Tr
ain", 2);
               ^
3 errors

Answer 1

There are no errors occurs when I compile this two java files .
Here are the result I'm using jdk1.6 and dos command
[output]
[search path for source files: [D:\J2SDK1.6.0\lib, .\out]]
[search path for class files: [D:\J2SDK1.6.0\jre\lib\resources.jar, D:\J2SDK1.6.0\jre\lib\rt.jar, D:\J2SDK1.6.0\jre\lib\sunrsasign.jar, D:\J2SDK1.6.0\jre\lib\jsse.jar, D:\J2SDK1.6.0\jre\lib\jce.jar, D:\J2SDK1.6.0\jre\lib\charsets.jar, D:\J2SDK1.6.0\jre\classes, D:\J2SDK1.6.0\jre\lib\ext\dnsns.jar, D:\J2SDK1.6.0\jre\lib\ext\localedata.jar, D:\J2SDK1.6.0\jre\lib\ext\sunjce_provider.jar, D:\J2SDK1.6.0\jre\lib\ext\sunmscapi.jar, D:\J2SDK1.6.0\jre\lib\ext\sunpkcs11.jar, D:\J2SDK1.6.0\lib, .\out]]
[parsing started .\Invoice.java]
[parsing completed 31ms]
[parsing started .\UseInvoice.java]
[parsing completed 15ms]
[loading D:\J2SDK1.6.0\lib\ct.sym(META-INF/sym/rt.jar/java/lang/Object.class)]
[loading D:\J2SDK1.6.0\lib\ct.sym(META-INF/sym/rt.jar/java/lang/String.class)]
[loading D:\J2SDK1.6.0\lib\ct.sym(META-INF/sym/rt.jar/java/util/Date.class)]
[checking Invoice]
[loading D:\J2SDK1.6.0\lib\ct.sym(META-INF/sym/rt.jar/java/lang/System.class)]
[loading D:\J2SDK1.6.0\lib\ct.sym(META-INF/sym/rt.jar/java/io/PrintStream.class)]
[loading D:\J2SDK1.6.0\lib\ct.sym(META-INF/sym/rt.jar/java/io/FilterOutputStream.class)]
[loading D:\J2SDK1.6.0\lib\ct.sym(META-INF/sym/rt.jar/java/io/OutputStream.class)]
[loading D:\J2SDK1.6.0\lib\ct.sym(META-INF/sym/rt.jar/java/io/Serializable.class)]
[loading D:\J2SDK1.6.0\lib\ct.sym(META-INF/sym/rt.jar/java/lang/StringBuilder.class)]
[loading D:\J2SDK1.6.0\lib\ct.sym(META-INF/sym/rt.jar/java/lang/AbstractStringBuilder.class)]
[loading D:\J2SDK1.6.0\lib\ct.sym(META-INF/sym/rt.jar/java/lang/CharSequence.class)]
[loading D:\J2SDK1.6.0\lib\ct.sym(META-INF/sym/rt.jar/java/lang/Comparable.class)]
[loading D:\J2SDK1.6.0\lib\ct.sym(META-INF/sym/rt.jar/java/lang/StringBuffer.class)]
[wrote .\out\Invoice$InvoiceItem.class]
[wrote .\out\Invoice.class]
[checking UseInvoice]
[loading D:\J2SDK1.6.0\lib\ct.sym(META-INF/sym/rt.jar/java/lang/Class.class)]
[wrote .\out\UseInvoice.class]
[total 734ms]
[output]
check your syntax to compile these two files, may be you can show your syntax to compile these two files
javac [options] [classpath] source