testinterface.java

JAVA写的一个有关接口的类,希望对初学都有所帮助: QQ:315405572

import java.io.*;
interface Person
{
 	public void calcAge(); 
}

class YoungPerson implements Person
{
 	public void calcAge()
 	{
  		int year = 2007;
  		try
  		{		
   			InputStreamReader iin = new InputStreamReader(System.in);
   			BufferedReader bin = new BufferedReader(iin);
   			System.out.println("请输入一个出生年：");
   			System.out.flush();
   			year = Integer.parseInt(bin.readLine());
  		}
		catch(IOException e)
		{ 
		}
		if(year <= 2007)
		{
			System.out.print("出生于" + year + "年龄为");
			System.out.println( 2007-year);
  		}
  		else
  		{
   			System.out.println("出生年月不正确");
  		}
 	}
}

public class TestInterface
{
	public static void main(String[] args)
	{
		YoungPerson yp = new YoungPerson();
		yp.calcAge();
	}
}