我看到了他们似乎都奏效的好几种方法,但我很想知道,一个人是否比另一方更好。
举例来说,在<代码>JFrame上,可以:
myFrame.add(new JButton("OK"));
你们也可以这样做:
Container c = myFrame.getContentPane();
c.add(new JButton("OK"));
是否正确?
我看到了他们似乎都奏效的好几种方法,但我很想知道,一个人是否比另一方更好。
举例来说,在<代码>JFrame上,可以:
myFrame.add(new JButton("OK"));
你们也可以这样做:
Container c = myFrame.getContentPane();
c.add(new JButton("OK"));
是否正确?
www.un.org/spanish/ga/president JFrame
JFrame的班子与Fileme略有不符。 与其他JFC/Swing顶级集装箱一样,JFrame有一个JRootPane是唯一的孩子。 根病提供的内容线一般应包含联合阵线展示的所有非门面成分。 这不同于AWT Frame案。 作为方便添加及其变数,删除和放开Layout已压倒一切,以在必要时向内容提要。 这意味着你可以写:
frame.add(child);
此外,还将将儿童列入内容提要。 内容线永远不会消失。 企图将其宣布为无效,将使联合阵线成为一种例外。 违约内容线将设一名边界停工经理。 Refer to FundamentalPaneContainer for details on Plus, abolition and establishing the LayoutManager of a JFrame.
因此,两者都是相当的,两者都是正确的。
从Java5到t
添加<代码>JComponents 至ContentPane
, 仅限JFrame.add(JComponent)
。
<代码>JFrame 已实施<编码>BorderLayout, 然后myFrame.add(New JButton ("OK”);
将
我要明确地说:
Container c = myFrame.getContentPane();
c.add(new JButton("OK"));
是最实际的。 由于你今后很可能需要使用作为集装箱的集装箱。
myFrame.getContentPane();
你们不需要再写。 例如,如果你需要为框架确定另一个布局,就将予以使用。 但如前所述,这两种办法都可以使用。
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