How to create User-Defined Packages & Use of the Import Statement in JAVA.

A Package program can be saved and complied in a different way.To create directory(-d) same name as package name, to current folder(.)
In cmd.exe
E:\>javac -d . plante.java
E:\>javac -d . star.java
E:\>javac milkyway.java
E:\>java milkyway
Jupiter
69911.0
orange,white
Sun
695700.0
red,orange,yellow,green,blue,violet

E:\

  milkyway.java

  milkyway.class

  plante.java

  star.java

  galaxy

Categroy.class

plante.class

star.class

To understand this above figure.

CODING:
plante.java

package galaxy;
class Categroy 
{
 double size;
 String color;
  public void set(double num,String name){size=num;color=name;}
  public void get(){System.out.println(size+"\n"+color);}
}
public class plante
{
 String plante;
 Categroy c1=new Categroy ();
   public void set(String pName,double num,String cName){
      plante=pName;
       c1.set(num,cName);
    }
   public void get(){System.out.println(plante);c1.get();}
 }

star.java

package galaxy;
import galaxy.Categroy;
public class star
{
 String star;
 Categroy c1=new Categroy ();
  public void set(String Sname,double num,String cName){
    star=Sname;
    c1.set(num,cName);
  }
  public void get(){System.out.println(star);c1.get();}
}

milkyway.java

import galaxy.plante;
import galaxy.star;
class milkyway
{
 public static void main(String [] args)  
  { 
   plante p1=new plante();
    p1.set("Jupiter",69911,"orange,white");
    p1.get();
   star s1=new star();
    s1.set("Sun",695700,"red,orange,yellow,green,blue,violet");
    s1.get();
  } 
}