Warning I don´t understand while compiling-Prob with .jar... help plz?

Question

Hello, While I compile my java file I get the :
I:\............. >javac ObjCreatorV1.java
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.After that : i get the:
I:\........................>javac -Xlint ObjCreatorV1.java
ObjCreatorV1.java:40: warning: [serial] serializable class ObjCreatorV1 has no definition of serialVersionUID
public class ObjCreatorV1 extends JFrame {
       ^
1 warningWhat does it mean?? It´s ok, I can still run it, and it´s just fine, but I´m wondering if that warning is the reason why I can´t make a .jar out of it.
Actually I create the .jar file but it doesn´t run, it just makes a ding noise, and nothing more.
Some help plz... =)

Answer 1

I just put
public static final long serialVersionUID = 1L; in all my classes and now I get the following....:
I:\Documents and Settings\Universidad\Mis documentos\ObjCreator v1.0>javac -Xlint ObjCreatorV1.java
.\Point.java:58: warning: [deprecation] readLine() in java.io.DataInputStream has been deprecated inLine=dis.readLine();
          ^
.\Cube.java:38: warning: [deprecation] readLine() in java.io.DataInputStream has been deprecated inLine=dis.readLine();
          ^
.\SimpleLine.java:33: warning: [deprecation] readLine() in java.io.DataInputStream has been deprecated inLine=dis.readLine();
          ^
.\Line.java:35: warning: [deprecation] readLine() in java.io.DataInputStream has been deprecated inLine=dis.readLine();
          ^
.\Pyramid.java:35: warning: [deprecation] readLine() in java.io.DataInputStream has been deprecated inLine=dis.readLine();
          ^
.\Cone2.java:80: warning: [deprecation] readLine() in java.io.DataInputStream has been deprecated inLine=dis.readLine();
          ^
.\Cylinder1.java:88: warning: [deprecation] readLine() in java.io.DataInputStream has been deprecated inLine=dis.readLine();
          ^
.\Plane.java:35: warning: [deprecation] readLine() in java.io.DataInputStream has been deprecated inLine=dis.readLine();
          ^
.\PlaneV.java:33: warning: [deprecation] readLine() in java.io.DataInputStream has been deprecated inLine=dis.readLine();
          ^
.\PlaneH.java:33: warning: [deprecation] readLine() in java.io.DataInputStream has been deprecated inLine=dis.readLine();
          ^
.\PlaneP.java:31: warning: [deprecation] readLine() in java.io.DataInputStream has been deprecated inLine=dis.readLine();
          ^
.\Parallelepiped.java:32: warning: [deprecation] readLine() in java.io.DataInputStream has been deprecated inLine=dis.readLine();
          ^
.\Prisma6.java:31: warning: [deprecation] readLine() in java.io.DataInputStream has been deprecated inLine=dis.readLine();
          ^
13 warningspfffff
I also tried to use
BufferedReader dis = new BufferedReader(new InputStreamReader(in));But that gives me errors that i can´t solve either...
help...... :S
Edited by: epp1227 on Mar 18, 2009 4:46 AM