jf.add(new JScrollPane(tab_showTicket),BorderLayout.CENTER);
Exception in thread "main" java.lang.NullPointerException
at javax.swing.JTable$1.getRowCount(Unknown Source)
at javax.swing.JTable.getRowCount(Unknown Source)
at javax.swing.plaf.basic.BasicTableUI.createTableSize(Unknown Source)
at javax.swing.plaf.basic.BasicTableUI.getPreferredSize(Unknown Source)
at javax.swing.JComponent.getPreferredSize(Unknown Source)
at javax.swing.ScrollPaneLayout.layoutContainer(Unknown Source)
at java.awt.Container.layout(Unknown Source)
at java.awt.Container.doLayout(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validate(Unknown Source)
at java.awt.Container.validateUnconditionally(Unknown Source)
at java.awt.Window.show(Unknown Source)
at java.awt.Component.show(Unknown Source)
at java.awt.Component.setVisible(Unknown Source)
at java.awt.Window.setVisible(Unknown Source)
at buyticket.MainFrame.<init>(MainFrame.java:101)
at buyticket.MainFrame.main(MainFrame.java:195)
初始化了啊 现在可以了,可能是…………
初始化了,就是添加JC……组建的那有问题,去掉就没事了
就是那一句添加 JC…的地方有错,去掉那句就没事了 ……我是连接数据库的不知道有没有原因
追答jscorll 那个是什么~
那是 new frame()