Talking to different forms and passing information

[lBalal]

Hi all

I am using netbeans to make my hci.

now in my form1 i have a button that when pressed takes me to form2 (class2) on form2 i want to press a button to change the color of button in form 1. as well as this i want to pass information between the two forms.

can any one help


thankyou in advance

LBALAL

[r035198x]

Hi all

I am using netbeans to make my hci.

now in my form1 i have a button that when pressed takes me to form2 (class2) on form2 i want to press a button to change the color of button in form 1. as well as this i want to pass information between the two forms.

can any one help


thankyou in advance

LBALAL

What are your forms? Are they JFrames?

You can pass information between objects of different classes by passing one of the objects to the constructor of the other object's class.
e.g

 class A { 
}
 
class B {
 B(A a) {
    a.setColor(Color.red);
  }
}
 

[hirak1984]

it is not that tough if you use jsp.even let us know if you are using swing.

Hi all

I am using netbeans to make my hci.

now in my form1 i have a button that when pressed takes me to form2 (class2) on form2 i want to press a button to change the color of button in form 1. as well as this i want to pass information between the two forms.

can any one help


thankyou in advance

LBALAL

[lBalal]

hi I am using Swing

[r035198x]

hi I am using Swing

Did you understand the idea I gave you?

[N002199B]

What are your forms? Are they JFrames?

You can pass information between objects of different classes by passing one of the objects to the constructor of the other object's class.
e.g

 class A { 
}
 
class B {
 B(A a) {
    a.setColor(Color.red);
  }
}
 

That's interesting to note. I suppose by so doing you will be forced to create a constructor with that signature.... ie that takes arguments of type 'class A'.

That should be tha only way we can get class A's member values into an instace of class B. Am I right?

[r035198x]

That's interesting to note. I suppose by so doing you will be forced to create a constructor with that signature.... ie that takes arguments of type 'class A'.

That should be tha only way we can get class A's member values into an instace of class B. Am I right?

Another way Aib, would be to pass the object to a method

 class A { 
}
class B {
 void b(A a) {
   a.setColor();
  }
}
 

There are implications of course and which approach to take depends on the design of your classes.

[N002199B]

Another way Aib, would be to pass the object to a method

 class A { 
}
class B {
 void b(A a) {
   a.setColor();
  }
}
 

There are implications of course and which approach to take depends on the design of your classes.

U kno wat "V....",
that is possible very much. However, then it would require the class design to have an instance of class A to be declared within class B for it to be in the scope of class B. ..........or else........

the method being used to receive the class A object has to made public like:

public void b(A a) {

and have instaces of class B and A in another class to communicate.

In the case of the matter at hand, of buttons and forms being passed about, the second method would be more appropriate

[r035198x]

U kno wat "V....",
that is possible very much. However, then it would require the class design to have an instance of class A to be declared within class B for it to be in the scope of class B. ..........or else........

the method being used to receive the class A object has to made public like:

public void b(A a) {

and have instaces of class B and A in another class to communicate.

In the case of the matter at hand, of buttons and forms being passed about, the second method would be more appropriate

You're probably right.


Notice that

 class A{ 
   A(B b) {
   }
}
 
class B {
  B(A a) {
  }
}
 

====> Chicken and Egg situation.