Question

java 中的setBounds()函数的用法?

以及怎样设置控件的大小，比如设置JTextField控件的大小！？

Answer 1

setBounds(int x,int y,int width,int height)
(1)前两个是组件左上角在容器中的坐标。
(2)后两个是宽度和高度。
还有一种形式是setBounds(Rectangls r);
example :setBounds(new Rectangle(30,30,50,50));

Answer 2

getBounds()
public Rectangle getBounds()
Gets the bounds of this component in the form of a Rectangle object. The bounds specify this component's width, height, and location relative to its parent.

Returns:
a rectangle indicating this component's bounds
See Also:
setBounds(int, int, int, int), getLocation(), getSize()