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POCannot find symbol : when compiling java code
 

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    <p>I am writing some Java classes to implement RMI. I wrote all the classes and the program worked fine. But from the very next day I am getting a compiler error indicating that the absence of files:</p> <p>Filename: <strong>ServerInterface.java</strong></p> <pre><code>import java.rmi.*; public interface ServerInterface extends Remote { public double sum(double[] temp) throws RemoteException; }; </code></pre> <p>Filename: <strong>ServerImplement.java</strong></p> <pre><code>import java.rmi.*; import java.rmi.server.*; public class ServerImplement extends UnicastRemoteObject implements ServerInterface { public ServerImplement() throws RemoteException { } public double sum(double[] temp) throws RemoteException { double sum=0; int len=temp.length; for(int i=0;i&lt;len;i++) sum+=temp[i]; return sum; } }; </code></pre> <p>Even to prove that its not any filename errors:</p> <pre><code>F:\E\java\rmi final&gt;dir Volume in drive F is My Volume Volume Serial Number is E0F9-4F89 Directory of F:\E\java\rmi final 22-01-2011 23:23 &lt;DIR&gt; . 22-01-2011 23:23 &lt;DIR&gt; .. 22-12-2009 13:09 1,849 additionImplementer_Stub.class 21-01-2011 21:52 1,076 Client.class 18-01-2011 02:54 649 Client.java 21-01-2011 21:52 1,847 ClientTry.class 18-01-2011 02:54 1,268 ClientTry.java 21-01-2011 21:52 444 ServerImplement.class 18-01-2011 02:30 386 ServerImplement.java 18-01-2011 02:54 1,783 ServerImplement_Stub.class 21-01-2011 21:54 209 ServerInterface.class 22-12-2009 12:07 132 ServerInterface.java 21-01-2011 21:52 919 ServerMain.class 18-01-2011 02:36 409 ServerMain.java 12 File(s) 10,971 bytes </code></pre> <p>If I try: <code>javac *.java</code> , it works fine (but trying java on any of the .class files leads to error : <code>Exception in thread "main" java.lang.NoClassDefFoundError: ServerMain</code></p> <p>If I try <code>javac ServerImplement.java</code> I get an error (in fact none of my java programs are able to link): (I am in the same directory)</p> <blockquote> <p>E:\java\rmi final>javac ServerMain.java<br> ServerImplement.java:4: cannot find symbol<br> <code>symbol: class ServerInterface</code><br> <code>public class ServerImplement extends UnicastRemoteObject implements ServerInterface</code><br> <code>^</code><br> <code>1 error</code> </p> </blockquote> <p>The program is even working fine at my college lab. Should I reinstall JDK? Or is there any way to provide linking explicitly?</p>
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