java.lang.NullPointerException at test$2.actionPerformed(test.java:60) at java.awt.Button.processActionEvent(Button.java:381) at java.awt.Button.processEvent(Button.java:350) at java.awt.Component.dispatchEventImpl(Component.java:3598) at java.awt.Component.dispatchEvent(Component.java:3439) at java.awt.EventQueue.dispatchEvent(EventQueue.java:450) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:197) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:144) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:136) at java.awt.EventDispatchThread.run(EventDispatchThread.java:99) です・・・長い・・・
