• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
  • Campbell Ritchie
  • Bear Bibeault
  • Devaka Cooray
  • Liutauras Vilda
  • Jeanne Boyarsky
  • Knute Snortum
  • Junilu Lacar
  • paul wheaton
Saloon Keepers:
  • Ganesh Patekar
  • Frits Walraven
  • Tim Moores
  • Ron McLeod
  • Carey Brown
  • Stephan van Hulst
  • salvin francis
  • Tim Holloway

import mypack.*; (asterisk and without asterisk)  RSS feed

Ranch Hand
Posts: 39
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
/* class A*/
package pack1;
public class A{
public void call(){
System.out.println("Hello Darling");
/* class B which uses class A by importing pack1*/
import pack1.*;
public class B{
public static void main(String args[ ]){
A obj =new A();
/***problem *********************/
i am using jdk1.3
"c:\java" current dir.
when compiled at Dos prompt
c:\java> javac -d . A.java --> creates directory pack1-->puts A.class in that dir.
now when compiling B.java
C:\java> javac B.java

C:\Java> javac B.java
B.java:6: cannot resolve symbo
symbol : constructor A ()
location: class A
A obj =new A();
B.java:7: cannot resolve symbo
symbol : method call ()
location: class A
2 errors
but it works fine and compiles and output IF
i keep
import pack1.A in class B instead of import pack1.*;
i have set the classpath to the current directory
c:\java>set classpath=%classpath%;.;
/* dot indicates current dir */
Can anyone help me the problem the asterisk with and without
Posts: 4
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Sorry no explanation but an interesting problem.
Perhaps the answer is that it is not good practice to have the A.java in the default package of B when it is not part of the default package.
So the rule is
import pack1.A
does not get confused with A.java in the default package
import pack1.*
recompiles A.java in the default package and puts the class file in the same directory (ie does not use javac -d . when it recompiles A)
Of course using an IDE such as Visual Age for Java prevents you from ever having a java file not in its own package.
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!