央广网报道,最近河南郑州新密市宣传部发布文章,发现新密市新华路有一处门面房由于液化气泄露导致爆炸,房屋坍塌有四人被埋在废墟下,截止到发文时间,4人已全部救出,其中有2人受到轻伤,2人受到重伤,在救出来以开
I have a JPanel sitting inside the center pos开发者_JS百科ition of a BorderLayout of a JFrame.How can I swap out the current JPanel for a new one?Did you try something on the lines of: