制作烟花，执行本例实例后，用鼠标点击浏览器中的面板，将出现五彩缤纷的烟花效果。-produce fireworks, the implementation of the cases example, and click the browser's panel, there will be colorful fireworks effects.

可惜一开始没能画成圆,所以整个过程都是菱形的变换,希望大家多多指教,能够想办法把初始状态就围成一个圆-Unfortunately, the beginning could not draw into a round, so the whole process is the diamond transformation, we hope the exhibitions, to be able to think of a way to put the initial state is surroun

用鼠标点击浏览器中的面板，将出现五彩缤纷的烟花效果。本实例的知识点有：鼠标事件的监听，Graphics类和Thread类的应用。-Use the mouse to click on the browser panel will appear colorful fireworks effects. Knowledge of this example are: mouse event listener, Graphics class and the Thread class applications