The method setDefaultCloseOperation(int) is undefined for the type

時間 2020-08-10

標籤 method setdefaultcloseoperation int undefined type 简体版

原文原文鏈接

public class MainFrame extends Frame implements ActionListener{this ....... 繼承 this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)io ........ class } List 在執行以上代碼時this.setDefaultCloseOperat

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1. jsp The method getDispatcherType() is undefined for the type HttpServletRequest
2. The method getTextContent() is undefined for the type Node
3. The method setConfig(RequestConfig) is undefined for the type HttpGet
4. 項目報錯:The method getTextContent() is undefined for the type Node
5. spring boot 常見問題 - 02. The method builder() is undefined for the type Result
6. MyEclipse 下 the method setTextContent() is undefined for the type Element錯誤
7. 解決The method getJspApplicationContext(ServletContext) is undefined for the type JspFactory
8. 編譯時The method is undefined for the type 報錯
9. The method getTextContent() is undefined ?
10. The method getTextContent()is undefined for...編譯出錯

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