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HighWay.Main.MyTableModel
java.lang.ClassCastException: HighWay.Main.MyTableModel	at HighWay.Main.Main.mail_mouseClicked(Main.java:177)	at HighWay.Main.Main.access$400(Main.java:14)	at HighWay.Main.Main$5.mouseClicked(Main.java:154)	at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:211)	at java.awt.Component.processMouseEvent(Component.java:3718)	at java.awt.Component.processEvent(Component.java:3544)	at java.awt.Container.processEvent(Container.java:1164)	at java.awt.Component.dispatchEventImpl(Component.java:2593)	at java.awt.Container.dispatchEventImpl(Container.java:1213)	at java.awt.Component.dispatchEvent(Component.java:2497)	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:2451)	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2230)	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2125)	at java.awt.Container.dispatchEventImpl(Container.java:1200)	at java.awt.Window.dispatchEventImpl(Window.java:914)	at java.awt.Component.dispatchEvent(Component.java:2497)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:339)	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:131)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:98)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)	at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)