test307_9.java

JAVA学习源代码,大家可以好好参考,请多提宝贵意见

class Base
{
	int i;
	int c;
	Base()
	{
		System.out.println("superclass has been init");
		add(1);//call Extension add()
		
	}
	/*Base(String s)
	{
		System.out.println("in extensinwwwwwwwwwwwwwwww i="+i);
	}*/
	void add(int r)
	{
		//System.out.println("in base i="+i);
		//i+=v;
		//i=100;
		
	}
	void print()
	{
		System.out.println(i);
	}
}
class Extension extends Base
{
	
	//int i;
	Extension()
	{
		add(3);
	}
	void add(int v)
	{
		i+=v*3;
		System.out.println("in extensin i="+i);
		System.out.println("in extensin c="+c);
	}
	

  Extension(String s)
  {
  	//super(s);
  	//String r="r";
	  
  }
}
public class Test307_9
{
	public static void main(String args[])
	{
		Extension a=new Extension();
		//Extension gg=new Extension("l");
		//Base h=new Base();
		System.out.println(a.i);
		//System.out.println(h.i);
		//System.out.println(4+5);
		//bogo(new Extension());
		//bogo(a);
		
	}
	/*static void bogo(Base b)
	{
		b.add(3);
		
		b.print();
	}*/
}