Question

JComboBox的removeAllItems()提示下标越界怎么办?

如题，调用JComboBox的removeAllItems()方法总是报错java.lang.ArrayIndexOutOfBoundsException，要怎么解决？

Answer 1

需要先将组件上的监听去掉，在执行remoteallItems()方法，最后再加上监听

Answer 2

/**清除之前,先移走行为监听.**/
ActionListener[] actions =jcb.getActionListeners();
for (int i=0;i<actions.length;i++)
{
jcb.removeActionListener(actions[i]);
}

jcb.removeAllItems();
for (int i=0;i<items.length;i++)
jcb.addItem(items[i]);

/**还原之前的监听.**/
for (int i=0;i<actions.length;i++)
{
jcb.addActionListener(actions[i]);
}