constructortest.java

编程之道--java程序设计入门源代码

/**
 *　测试类构造器的调用顺序
 */
public class ConstructorTest
{
	public static void main(String[] args)
	{
		C c= new C("hello");
	}
}

class A
{
	public A()
	{
		System.out.println("this is A");
	}
}

class B extends A
{
	public B(String str)
	{
		System.out.println("this is B");
	}
}

class C extends B
{
	public C(String str)
	{
	  super(str);
		System.out.println("this is C");
	}
}