b.java

来自「国外的数据结构与算法分析用书」· Java 代码 · 共 12 行

class B extends A
{
	public void uselessMethod()
	{
		methodX(); // error, methodX() of parent is private
		methodY();
		methodZ();
		x = 50; // error, x of parent is private
		y = 100;
		z = 150;
	}
}