(ImageObserver observer)public abstract int getHeight(ImageObserver observer)observer - 等待加载图像的对象.这个Observer到底是什么,举几个例子...怎样获取图像的width height img.getWidth(~) 返回的是-1..img=getToolkit().get

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(ImageObserver observer)public abstract int getHeight(ImageObserver observer)observer - 等待加载图像的对象.这个Observer到底是什么,举几个例子...怎样获取图像的width height img.getWidth(~) 返回的是-1..img=getToolkit().get
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(ImageObserver observer)public abstract int getHeight(ImageObserver observer)observer - 等待加载图像的对象.这个Observer到底是什么,举几个例子...怎样获取图像的width height img.getWidth(~) 返回的是-1..img=getToolkit().get
(ImageObserver observer)
public abstract int getHeight(ImageObserver observer)
observer - 等待加载图像的对象.
这个Observer到底是什么,举几个例子...
怎样获取图像的width height
img.getWidth(~) 返回的是-1..
img=getToolkit().getImage("pics/58.gif");
System.out.println(img.getWidth(this));
System.out.println(img.getHeight(this));
将上面的this 全部换成null结果都一样,都是：
运行-1.

(ImageObserver observer)public abstract int getHeight(ImageObserver observer)observer - 等待加载图像的对象.这个Observer到底是什么,举几个例子...怎样获取图像的width height img.getWidth(~) 返回的是-1..img=getToolkit().get
Observer字面理解就是观察者,其实这是观察者模式.ImageObserver就是Image的观察者,它时刻关注Image是否可用.
很想看到你有的代码

(ImageObserver observer)public abstract int getHeight(ImageObserver observer)observer - 等待加载图像的对象.这个Observer到底是什么,举几个例子...怎样获取图像的width height img.getWidth(~) 返回的是-1..img=getToolkit().get 英语翻译In 1506 Copernicus returned to his homeland.A few years later he began to work for the Church.All those years Copernicus carried on his work in astronomy.He had just the most basic equipment and,like other scientists of his day,made obser 英语翻译1.Have you seen Henny lately?My boss want to know_____.A.how he is getting along B.how is he getting along C.what he is getting along D.what is he getting along 2,The book will show you____can be used in other context.A.how you have obser 帮忙,请高手帮我做做这几道英语题!谢谢1:Our director had______on the matter for a long time before he made the decision.A)hushed B)thrashed C)ponderde D)suspended2:The plants are in a(n)______plastic box,so the children can obser