java 图形用户界面 JFrame setSize（）方法和 Container setBackground（）方法 位置的问题？
推荐回答（3个）
setSize()是按照设置的大小显示的，在setSize之后，会自动调用repaint方法，也就是说会重绘窗体。参数可以是一个Dimension对象，也可以是两个整型数字，代表宽和高。
setBackground()是设置容器的背景色的。参数是java.awt.Color对象，比如Color.blue。
有区别。
在setSize之后，会自动调用repaint方法，也就是说会重绘窗体。仅仅是这两句的时候还看不出来，如果中间加上一句在窗体上打印字符串的语句，就能看出来了，先setSize的可以看到打印的文字，后setSize就看不到了。
你想问什么呢？是说交换他们的次序结果会不会不同？你自己都说了 结果一样啊 一般交换次序会引起不同的那种跟初始化有关 比如 你初始化一个panel 要把它加到frame里 就要先new 再对这个panel设置 比如size啊 color啊之类的 然后add到frame里 如果是先add到frame里 再设置 就有可能不对了~ 是不是描述的有点乱啊 呃 不怎么会描述~
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