MATLAB: Link between edit text 1 and 2 when puch button has click

pushbutton

edit 1 at input 1 is 15, how when I click push button, the 15 will appear at edit2?

in the edit1 callback save the variable inputted by the user in a variable:

handles.myvar = get(handles.edit1,'string');
guidata(hObject, handles);

in the pushbutton callback put:

set(handles.edit2,'string',handles.myvar)

Pavikirthi - in the callback for your first pushbutton, update the handles structure with the value of the variable that you wish to save. i.e.

 handles.myVar = someValue;

Now save the updated handles structure using guidata as

 guidata(hObject, handles);

(The above assumes that both hObject and handles are inputs to your callback.)

Now, in the other pushbutton callback, you can reference myVar directly using the input handles object as

 if isfield(handles,'myVar')
     % do something with this variable
 end

The above check makes sure that myVar is a field in handles before you try to access it.