Java RSS Java RSS

how to call a method defined in another file?

Please support our Java advertiser: Programming Forums - DaniWeb Sister Site
Reply

•
•
Join Date: Jun 2007
Posts: 8
Reputation: dajiebuda is an unknown quantity at this point 
Solved Threads: 0
dajiebuda dajiebuda is offline Offline
Newbie Poster

how to call a method defined in another file?

 
0
  #1
Jun 16th, 2007
codes in two files. Is there a way to use a method cross files?
Reply With Quote Quick reply to this message  
•
•
Join Date: Sep 2006
Posts: 162
Reputation: Cerberus is an unknown quantity at this point 
Solved Threads: 14
Cerberus Cerberus is offline Offline
Junior Poster

Re: how to call a method defined in another file?

 
0
  #2
Jun 16th, 2007
The class calling the method needs a reference to the other class. For example, ClassA instantiates ClassB (Below) and ClassB needs to call a method provided by ClassA. The 'this' keyword can be passed into ClassB's constructor to provide it with a reference to ClassA.

E.g.

Java Syntax (Toggle Plain Text) 
  1.  
  2. public class ClassA{
  3.     ClassB subordinate;
  4.  
  5.     public static void main(String[] args){
  6.         subordinate = new ClassB(this);
  7.     }
  8.  
  9.     public void mymethod(){
  10.         //do something
  11.     }
  12. }
  13. public class ClassB{
  14.     ClassA master;
  15.  
  16.     public ClassB(ClassA master){
  17.         this.master = master;
  18.         master.mymethod();
  19.     }
  20. }
Last edited by Cerberus; Jun 16th, 2007 at 4:00 pm.
Reply With Quote Quick reply to this message  
•
•
Join Date: Jun 2007
Posts: 8
Reputation: dajiebuda is an unknown quantity at this point 
Solved Threads: 0
dajiebuda dajiebuda is offline Offline
Newbie Poster

Re: how to call a method defined in another file?

 
0
  #3
Jun 16th, 2007
This is very helpful! Thanks.
Reply With Quote Quick reply to this message  
•
•
Join Date: Nov 2004
Posts: 6,143
Reputation: jwenting is just really nice jwenting is just really nice jwenting is just really nice jwenting is just really nice 
Solved Threads: 212
Team Colleague
jwenting's Avatar
jwenting jwenting is offline Offline
duckman

Re: how to call a method defined in another file?

 
1
  #4
Jun 17th, 2007
but don't go that way. Learn about proper Object Oriented design rather than trying to use Java as if it were a procedural language.
As people are clearly allowed to attack me but I'm not allowed to defend myself, I no longer post to this site.
Reply With Quote Quick reply to this message  
•
•
Join Date: Jun 2007
Posts: 83
Reputation: ProgrammersTalk is an unknown quantity at this point 
Solved Threads: 7
ProgrammersTalk's Avatar
ProgrammersTalk ProgrammersTalk is offline Offline
Junior Poster in Training

Re: how to call a method defined in another file?

 
0
  #5
Jun 17th, 2007
•
•
•
•
Originally Posted by dajiebuda View Post
codes in two files. Is there a way to use a method cross files?
what do you mean with use? you can call it by creating the instance of that method
The ProgrammersTalk Community | Programming & Marketing | Buying & Selling Script
Hang out place of novice and intermediate programmers
Reply With Quote Quick reply to this message  
Reply

Quick Reply to Thread
This thread is more than three months old.
Perhaps start a new thread instead?
•
•
•
•
•
•
•
•
Message:
•
•
•
•



Similar Threads
Other Threads in the Java Forum
Thread Tools Search this Thread



android api applet application array arrays automation awt bidirectional binary birt bluetooth businessintelligence busy_handler(null) calculator chat class classes client code columns component constructor database designadrawingapplicationusingjavajslider draw eclipse editor error errors event eventlistener exception expand fractal game givemetehcodez graphics gui guidancer html ide image inetaddress input integer intellij j2me java javafx javamicroeditionuseofmotionsensor javaprojects jme jni jpanel jtree julia link linux list loop map method methods mobile mobiledevelopmentcreatejar myaggfun netbeans newbie oracle parsing plazmic print problem program programming project recursion scanner screen server set sharepoint size smart sms smsspam sort sortedmaps sql string subclass support swing threads time tree unlimited webservices windows
About Us | Contact Us | Advertise | DaniWeb | Acceptable Use Policy | RSS Feed

©2003 - 2009 DaniWeb® LLC