e.java

来自「国外的数据结构与算法分析用书」· Java 代码 · 共 19 行

class E extends D
{
	double z; // hide z from parent

	public E()
	{
		((A)this).methodY();
	}

	/**	Override method in parent. */
	public void methodY()
	{
		super.methodY(); // access method in parent
		y = 2 * ((A)this).z; // access z in grandparent
		super.z = false; // set z in parent 
		z = 45.76; // assigns a value to instance variable z
	}
}