classddemo.java

来自「java课程的资料以及实验的代码」· Java 代码 · 共 18 行

public class ClassdDemo {
   int x;
}
 class DeriveDemo extends ClassdDemo
{
	ClassdDemo dd=new ClassdDemo();
	DeriveDemo()
	{
		dd.x=0;
		x=10;
	}
	public static void main(String []args)
	{
		new DeriveDemo();
	}
}