Java

Java RSS

How to? Java GUI interacting with another Java class

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

•

Join Date: Mar 2009

Posts: 2

Reputation: heysebas is an unknown quantity at this point

Solved Threads: 0

heysebas

Offline

Newbie Poster

How to? Java GUI interacting with another Java class

Mar 27th, 2009

Hi guys,

I'm writing a Java programme, one with GUI for a project in college.

We separated the work into a few guys doing a few standalone Java classes. These standalone Java classes are run by doing the usual:
java -jar XXX.jar through the console. The functions of the class are issued through by typing commands into the class by way of the console. e.g. /chat mynick message

A few of the other guys designed the GUI.

The question now is.. how do we integrate these two together? I've been googling but I dont know a good sign post.

I'm thinking we need to write an interface between the GUI and the Java classes. Is there a term for this?

We're lost, please advise!

•

Join Date: Dec 2007

Posts: 1,677

Reputation: javaAddict is a name known to all

Solved Threads: 226

javaAddict javaAddict is offline

Offline

Posting Virtuoso

Re: How to? Java GUI interacting with another Java class

Mar 27th, 2009

Java GUI is just another class. You can create instances of other classes inside and call their methods.
Small, silly example:

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
class Person {
public String name;
public int age;   
 
public Person() {
   }
}
class Person {
public String name;
public int age;   

public Person() {
   }
}

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
class Print {
private Person person;
 
public Print(Person p) {
   person = p;
}
 
 public void print() {
   System.out.println(person.name+";"+person.age);
 }
}
class Print {
private Person person;

public Print(Person p) {
   person = p;
}

 public void print() {
   System.out.println(person.name+";"+person.age);
 }
}

And in another class (or in main)

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
Person pers = new Person();
pers.name = "Name";
pers.age = 10;
 
Print pr = new Print(pers);
pr.print();
Person pers = new Person();
pers.name = "Name";
pers.age = 10;

Print pr = new Print(pers);
pr.print();

Check out my New Bike at my Public Profile at the "About Me" tab

•

Join Date: Apr 2008

Posts: 972

Reputation: JamesCherrill is just really nice

Solved Threads: 145

JamesCherrill JamesCherrill is offline

Offline

Posting Shark

Re: How to? Java GUI interacting with another Java class

Mar 27th, 2009

Add methods to the stand-alone classes so their functionality can be called from Java, eg public sendChat(String nick, String message).
Then, in the GUI have entry fields for the required data, when the user clicks OK, get the data from the fields and use it to call the functionality via these new methods.
ps It's called MVC. Model (ie the functionality) View (ie the user interface) and Controller (the logic that links the two). In this case, like many others, the controller logic is trivial so it gets combined with the view code.