Java学习 继承之子类父类的构造函数

class A
{
	int num = 2;
	A()
	{
		
		System.out.println("父类");
	}
	
}
class B extends A
{
	int num = 3;
	B()
	{
		                                //子类构造函数这里默认有条隐式语句 super()
		System.out.println("子类");
	}
	
}
public class Test
{
	public static void main(String[] args)
	{
		B b = new B();
		
	}
}class A
{
	int num = 2;
	A()
	{
		
		System.out