java.lang.IllegalArgumentException: cannot add to layout: constraint must be a string

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via Coderanch by tadi raja, 1 year ago
cannot add to layout: constraint must be a string
via Coderanch by Kajol Shroff, 1 year ago
cannot add to lay out: constraint must be a string
via Stack Overflow by RaviRokz
, 2 years ago
cannot add to layout: constraint must be a string
via Stack Overflow by ZeroConnor
, 2 years ago
cannot add to layout: constraint must be a string
via Stack Overflow by Joshua Auriemma
, 2 years ago
cannot add to layout: constraint must be a string
via Google Groups by Janne 'GKiller' Hyötylä, 2 weeks ago
cannot add to lay out: constraint must be a string
java.lang.IllegalArgumentException: cannot add to layout: constraint must be a string
at java.awt.CardLayout.addLayoutComponent(CardLayout.java:190)
at java.awt.Container.addImpl(Container.java:664)
at java.awt.Container.add(Container.java:307)
at undefined.PanelDemo1.actionPerformed(PanelDemo1.java:84)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1786)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1839)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:245)
at java.awt.Component.processMouseEvent(Component.java:5100)
at java.awt.Component.processEvent(Component.java:4897)
at java.awt.Container.processEvent(Container.java:1569)
at java.awt.Component.dispatchEventImpl(Component.java:3615)
at java.awt.Container.dispatchEventImpl(Container.java:1627)
at java.awt.Component.dispatchEvent(Component.java:3477)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3198)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128)
at java.awt.Container.dispatchEventImpl(Container.java:1613)
at java.awt.Window.dispatchEventImpl(Window.java:1606)
at java.awt.Component.dispatchEvent(Component.java:3477)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)

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