程序出错，找不出原因，求大神
这是错误的原因，果断看不懂
Exception in thread "AWT-EventQueue-1" java.lang.ArrayIndexOutOfBoundsException: 0
at MyTimeCalculator.actionPerformed(TimeCalculator.java:190)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
at java.awt.Component.processMouseEvent(Component.java:6134)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
at java.awt.Component.processEvent(Component.java:5899)
at java.awt.Container.processEvent(Container.java:2023)
at java.awt.Component.dispatchEventImpl(Component.java:4501)
at java.awt.Container.dispatchEventImpl(Container.java:2081)
at java.awt.Component.dispatchEvent(Component.java:4331)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4301)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3965)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3895)
at java.awt.Container.dispatchEventImpl(Container.java:2067)
at java.awt.Window.dispatchEventImpl(Window.java:2458)
at java.awt.Component.dispatchEvent(Component.java:4331)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
[解决办法]
没得说，java.lang.ArrayIndexOutOfBoundsException 数组越界。按楼上的去找TimeCalculator类里的第190行。
[解决办法]
MyTimeCalculator.actionPerformed(TimeCalculator.java:190);
//在你的错误提示控制台双击上面的这行，就可以看到报错的位置，感觉是你的循环写错了。一般情况下用for循环都是
String[] aa = new String[4];
//这时候aa数组的总长度是4，但是数组都是从下标0开始的，所以循环应该这样写
for (int i = 0; i < aa.length - 1; i ++){
aa[i] = "当前是第" + (i + 1) + "个元素！";
}
