JAR FILE IS NOT DETECTING IN WINDOW

Question

hi
I am facing some problems during package creation
My current J2SDK is 1.5.0_02-b09
I create one packge called as p1.jar
It consist of one class & one interface
sa.java
package p1;
public class sa
     private int a,b;
     public sa(int a,int b)
          this.a=a;
          this.b=b;
     public void showval()
          System.out.println(" a="+a+" b="+b);
sb.java
package p1;
public interface sb
   public int s1=34;
   public int s2=43;
   public void  takeme(int a,int b);
/code]
I create a jar file and set its path in
MY COMPUTER ---->advanced --------->Environment & variables ----->classpath
if i specify  import p1.* in  the following manner import p1.*;
public class demopack implements sb
     int a,b;
     public demopack(int a,int b)
          this.a=a;
          this.b=b;
     public void takeme(int x,int y)
          a=s1+x;
          b=s2+y;
          System.out.println("a="+a+" b="+b);
     public static void main(String[] args)
               demopack d=new demopack(10,20);
               d.takeme(12,23);
               sa s=new sa(12,23);
               s.showval();
Following Error is executing
Z:\javademo>javac demopack.java
demopack.java:4: cannot access sb
bad class file: .\sb.java
file does not contain class sb
Please remove or make sure it appears in the correct subdirectory of the classpa
th.
public class demopack implements sb
                                 ^
1 error----------------------------------------------------------------------------------------
but if i mention import statement in following way there are no error
import p1.sa;
import p1.sb;
public class demopack implements sb
     int a,b;
     public demopack(int a,int b)
          this.a=a;
          this.b=b;
     public void takeme(int x,int y)
          a=s1+x;
          b=s2+y;
          System.out.println("a="+a+" b="+b);
     public static void main(String[] args)
               demopack d=new demopack(10,20);
               d.takeme(12,23);
               sa s=new sa(12,23);
               s.showval();
Is above mention problem is version problem
For user defined package Every time I have to import individual class ?
Is any alternative Solution (excluding -classpath option of javac)

Answer 1

Well
I follow your instruction
I am pasting the command prompt operation
Coding is same above
My all three files (.java )is resides in javath folder
command prompt code
Z:\javath>javac -d . sa.java
Z:\javath>javac -d . sb.java
Z:\javath>jar -cvf p1.jar p1/*.class
added manifest
adding: p1/sa.class(in = 687) (out= 423)(deflated 38%)
adding: p1/sb.class(in = 185) (out= 153)(deflated 17%)
Z:\javath>javac demopack.java
demopack.java:4: cannot access sb
bad class file: .\sb.java
file does not contain class sb
Please remove or make sure it appears in the correct subdirectory of the classpa
th.
public class demopack implements sb
                                 ^
1 error
Z:\javath>------------------------------------------------------------
in demopack.java file i want to access class files which are resides in
jar files
Actually when we are writing import java.io.*;
we can access all the class file from that io package
Same thing i am trying to implement for user defined package
I hope you understand my question
regards