Cannot refer to non variable inside Action listener (Jframe)

Question

The following program\'s goal is to ask the user to input a resistor value, then of which the program will output the corresponding colors for each digit. This thus not include

Answer 1

In Java you cannot refer to not final variables inside anonymous inner class. You attempt to access array3 inside anonymous implementation of ActionListener. You can simply change array3 to final, ie:

final String [] array3 = new String [3];

Also, to print a content of array you can use Arrays.toString():

JOptionPane.showMessageDialog(null, "The Colors are : " + (Arrays.toString(array3)));