java.lang.IllegalArgumentException: adding a window to a container

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via Coderanch by levi sleight, 1 year ago
adding a window to a container
via Stack Overflow by ThrillOfit
, 2 years ago
adding a window to a container
via Stack Overflow by Sojtin
, 2 years ago
adding a window to a container
via Stack Overflow by Unknown author, 2 years ago
java.lang.IllegalArgumentException: adding a window to a container
at java.awt.Container.checkNotAWindow(Unknown Source)
at java.awt.Container.addImpl(Unknown Source)
at java.awt.Container.add(Unknown Source)
at javax.swing.JFrame.addImpl(Unknown Source)
at java.awt.Container.add(Unknown Source)
at undefined.grape2run.main(grape2run.java:9)

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