for(final int i=0;i<box.length;i++)

------解决方案--------------------
哪有想你这样批量添加 ActionListener 的

给你个批量监听的例子，你看看吧

Java code
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;

public class TestFrame {

    private JButton[] btns;
    private MyListener listener;

    public TestFrame() {
        btns = new JButton[10];
        listener = new MyListener();
        for (int i = 0; i < btns.length; i++) {
            btns[i] = new JButton();
            btns[i].addActionListener(listener);
        }
    }

    class MyListener implements ActionListener {

        @Override
        public void actionPerformed(ActionEvent e) {
            Object obj = e.getSource();
            for (int i = 0; i < btns.length; i++) {
                if (obj.equals(btns[i])) {
                    if (btns[i].isSelected() == true) {
                        // ...
                    } else {
                        // ...
                    }
                    break;
                }
            }
        }

    }

}

------解决方案--------------------
Java code

public class Test {
    
    private interface test{
        void print();
    }
    
    public static void run(test t){
        t.print();
    }
    
    public static void main(String[] args){
        for([color=#FF0000]final int[] i = {0};i[0] < 10;i[0]++[/color]){
            Test.run(new test(){
                public void print(){
                    System.out.println([color=#FF0000]i[0][/color]);
                }
            });
        }
    }

}

------解决方案--------------------
想加颜色，没加上...就是把final int i 换成 final int[] i 的一维数组，所有用i的地方用i[0]代替