经典面试题收藏（我收藏的几个经典题）

请不要使用工具运行，看看Test类main方法执行的结果是？ 

package test; 

public class Parent { 
public static String staticname = "parentStaticname"; 
public String name = "Parent"; 
public String getName(){ 
return name; 
} 
} 

public class Child extends Parent { 
public static String staticname = "childStaticname"; 
public String name = "child"; 
public String getName(){ 
return name; 
} 
public String getchildName(){ 
return name; 
} 
} 


public class Test { 
public static void main(String[] args) { 
Parent parent; 
Child child; 
child = new Child(); 
parent = (Child)child; 

System.out.println(child.getClass()); 
System.out.println(child.name); 
System.out.println(child.getName()); 

System.out.println(parent.getClass()); 
System.out.println(parent.name); 
System.out.println(parent.getName()); 

System.out.println(child.staticname); 
System.out.println(parent.staticname); 


}

//==================================================
class com.test.Child
child
child
class com.test.Child
Parent
child
childStaticname
parentStaticname
//==================================================


public class Test {  
private int ix = 50;
private Test( int ix){