sample9_4.java

来自「Java SE 6.0前11章示的示例代码,简单易学」· Java 代码 · 共 25 行

package wyf.jc;
interface Developer
{
}
interface JavaDeveloper extends Developer
{
}
interface Lecture
{
}
class Person implements JavaDeveloper
{
}
public class Sample9_4
{
	public static void main(String[] args)
	{
		//创建对象并调用方法
		JavaDeveloper jd=new Person();
		Developer d=jd;
//		jd=d;
//		Lecture l=d;
	}
}