ObjectInputStream拋出NotSerializableException

Question

我正在嘗試使用ObjectInputStream從.dat文件讀取對象的數組（稱爲PWlist）。該陣列包含兩個不同的對象，LongPW和PinPW。當我嘗試執行讀，我得到這個例外...

java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: PinPW 
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1332) 
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1666) 
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1322) 
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350) 
at Handler.fromFile(Handler.java:99) 
at Window$ButtonListener.actionPerformed(Window.java:104) 
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028) 
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351) 
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:6375) 
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267) 
at java.awt.Component.processEvent(Component.java:6140) 
at java.awt.Container.processEvent(Container.java:2083) 
at java.awt.Component.dispatchEventImpl(Component.java:4737) 
at java.awt.Container.dispatchEventImpl(Container.java:2141) 
at java.awt.Component.dispatchEvent(Component.java:4565) 
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4619) 
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4280) 
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4210) 
at java.awt.Container.dispatchEventImpl(Container.java:2127) 
at java.awt.Window.dispatchEventImpl(Window.java:2482) 
at java.awt.Component.dispatchEvent(Component.java:4565) 
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:684) 
at java.awt.EventQueue.access$000(EventQueue.java:85) 
at java.awt.EventQueue$1.run(EventQueue.java:643) 
at java.awt.EventQueue$1.run(EventQueue.java:641) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) 
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98) 
at java.awt.EventQueue$2.run(EventQueue.java:657) 
at java.awt.EventQueue$2.run(EventQueue.java:655) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) 
at java.awt.EventQueue.dispatchEvent(EventQueue.java:654) 
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296) 
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211) 
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201) 
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196) 
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188) 
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) 

可能有人請幫助我瞭解什麼是錯的

Answer 1

java.io.NotSerializableException: PinPW意味着類PinPW無法序列化，因此 標記您PinPW到實現可序列化

public class PinPW implements Serializable { 

}