在窗体的关闭事件里：
class this_InternalFrame_Adaptee extends nternalFrameAdapter{ class this_InternalFrame_Adaptee
class this_InternalFrame_Adaptee extends nternalFrameAdapter{ class this_InternalFrame_Adaptee
阅读背景：
解决立即结贴 java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]Object has been closed.
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