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每当我单击该框时,我都想获得数字 1 到 4。如图所示,它应该发生在所有框上。当我选择任何数字时,当我单击 X 时,它应该在框中选择它应该取消选择。
有人可以帮我使用 Swing 吗?我需要做这个谜题。