That the system can instantiate and run as needed .
系统能够实例化并按需要运行的东西。
Instantiate a new procedural material instance from a prototype .
从原型实例一个新的程序材质实例。
Alternatively , you can instantiate it lazily , on first demand , as seen in listing 2 .
或者,可以惰性地初始化单实例,即只在第一次使用时才初始化,代码见清单2。
Create your own class and instantiate the controls .
创建你自己的类并将控件实例化。
For this to work , the system must be able to start an application process when any part of it is needed , and instantiate the java objects for that part .