我正在尝试使用Timer对象动态调整窗口大小,但没有成功...我在构造函数中设置了面板的首选大小,它很好地设置了窗口的大小,但只有一次.初始化程序后,首选大小会更改,但窗口大小保持不变.为什么？因为构造函数只初始化一次,因此不受大小变化的影响？如果是这样,我怎么能绕过这个来实时调整窗口大小？
我知道这不会解决开头评论中给出的练习中的问题,所以请忽略它:-)
/*
* Exercise 18.15
*
* "(Enlarge and shrink an image) Write an applet that will display a sequence of
* image files in different sizes. Initially, the viewing area for this image has
* a width of 300 and a height of 300. Your program should continuously shrink the
* viewing area by 1 in width and 1 in height until it reaches a width of 50 and
* a height of 50. At that point, the …