Question

当我想要关闭某个框架并打开那些在JTable里面生成的框架时，我有问题。在控制台中出现了很多错误。当我想要关闭并打开另一个框架而不是JTable时，我的代码可以正常工作。

我以这种方式创建表：

public table(){
        setLayout(new FlowLayout());
        String [] kolumny={"name of columns"};
        Object [][] dane ={
                {"","","","",""},
                {"","","","",""},

        };
        table=new JTable(dane,kolumny);
        table.setPreferredScrollableViewportSize(new Dimension(500,50));
        table.setFillsViewportHeight(true);
        JScrollPane scrollPane = new JScrollPane(table);
        add(scrollPane);
        table qui = new table();
        qui.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        qui.setSize(500,500);
        qui.setVisible(true);
        qui.setTitle("Tabela");

关闭并打开另一帧的代码：

JMenuItem jakas nazwa = new JMenuItem("jakas nazwa");
        akcja.add(jakas nazwa);
        jakas nazwa.addActionListener(new ActionListener(){
        public void actionPerformed(ActionEvent e) {
            new qui().setVisible(true);  
            Nazwa okienka które zamykamy.this.dispose();
        }

    });

一些错误：

Exception in thread "AWT-EventQueue-0" java.lang.StackOverflowError
    at sun.awt.SunToolkit.isInstanceOf(Unknown Source)
    at sun.awt.SunToolkit.isInstanceOf(Unknown Source)
    at sun.awt.SunToolkit.isInstanceOf(Unknown Source)
    at sun.awt.SunToolkit.isInstanceOf(Unknown Source)
    at sun.awt.SunToolkit.isInstanceOf(Unknown Source)
    at sun.awt.SunToolkit.isInstanceOf(Unknown Source)
    at sun.awt.SunToolkit.isInstanceOf(Unknown Source)
    at sun.awt.SunToolkit.isInstanceOf(Unknown Source)
    at javax.swing.LookAndFeel.installProperty(Unknown Source)
    at javax.swing.plaf.basic.BasicButtonUI.installDefaults(Unknown Source)
    at javax.swing.plaf.metal.MetalButtonUI.installDefaults(Unknown Source)

Answer 1

您正在table构造函数中创建新的table。这就是你获得stackoverflow的原因。这是一个无限循环。

拿出来：

table qui = new table();

只需使用此

setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
setSize(500,500);
setVisible(true);
setTitle("Tabela");

备注：使用Java命名约定。课程以大写字母开头

如何用JTable打开窗口并关闭另一个窗口

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