Question

java 如何让子窗口在父窗居中显示

Answer 1

sub.setLocation(father.getWidth()/2-sub.getWidth()/2, father.getHeight()/2-sub.getHeight()/2);

Answer 2

public void setLocationRelativeTo(Component c)

这个方法看文档貌似可以。

1. If the component is not null, but it is not
   currently showing, the window is placed in the center of
   the target screen defined by the GraphicsConfiguration associated with this component.

2. If the component is not null and is shown on
   the screen, then the window is located in such a way that
   the center of the window coincides with the center of the
   component.

Answer 3

你是如何弹出窗口的？