Question

I have a JButton array
button[100]
and use is in more than one method, one creating the 100 buttons and one the action listener
i’ve used

String abc=button[i].setActionCommand(String.format("Button %d", i));  

to find what button was pressed but variable button can’t be identified.

Answer 1

You need to give your variable more than local method scope. If you define it as a instance variable of the class, it will be accessible anywhere inside that class.

class YourClass {

     private JButton[] buttons; // instance variable, accessible to all methods in class 

     public void foo() {
          buttons = new JButton[100]; // can use buttons here
     }

     public void bar() {
          // can also use buttons here
          for (JButton button : buttons) {  

         }
     }
}