c2.java

java老师给的java例子很不错

//文件C2.java
package MyPackage.MyPackage1; 
public class C2 
{
    	public int number;	
    	public int age;  	
    
    	public C2(int n, int a)	
    	{
    		number = n;
    		age = a;
    	}
    	public void output()	
    	{
    		System.out.println("number = " + number + "\n" + "age = " + age);
    	}
}

//文件B2.java
package MyPackage;
import MyPackage.MyPackage1.C2;
public class B2              
{
	public void output()	
    {
     	C2 s1 = new C2(0,0);	
       	s1.number = 1;  
       	s1.age = 25;    
       	s1.output();     
    }
}

//文件D2.java
import MyPackage.B2;	
public class D2            
{
	public static void main(String args[])
	{
     	B2 t1 = new B2();
       	t1.output(); 
 	}
}