这个压缩包里的都是超级经典的java例子

				
				
				
				Getting the Superclass of an Object (Java Developers Almanac Example)
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				The Java Developers Almanac 1.4
				
				        Order this book from Amazon.
				    
				
				
				
				
				
				
				
				
				
				
				
				
				
								google_ad_client = "pub-6001183370374757";
				google_ad_width = 120;
				google_ad_height = 600;
				google_ad_format = "120x600_as";
				google_ad_channel = "4777242811";
				google_ad_type = "text_image";
				google_color_border = "FFFFFF";
				google_color_bg = "FFFFFF";
				google_color_link = "6666CC";
				google_color_url = "6666CC";
				google_color_text = "000000";
				//-->   
				
				Home
				    >
				    List of Packages
				    >
				
				    
				    java.lang
				         [58 examples]
				    
				        >
				        Classes
				             [11 examples]
				            
				
				  e62. Getting the Superclass of an Object
				
				
				    Object o = new String();
				    Class sup = o.getClass().getSuperclass();  // java.lang.Object
				    
				    // Superclass of Object is null
				    o = new Object();
				    sup = o.getClass().getSuperclass();        // null
				    
				    // Although the type of o2 is an interface, getSuperclass() returns the object's superclass
				    Runnable o2 = new Runnable() {
				        public void run() {
				        }
				    };
				    sup = o2.getClass().getSuperclass();       // java.lang.Object
				
				
				
				
				             Related Examples
				
				
				
				
				e59. 
				    Getting a Class Object
				
				
				
				e60. 
				    Getting the Name of a Class Object
				
				
				
				e61. 
				    Determining If a Class Object Represents a Class or Interface
				
				
				
				e63. 
				    Getting the Superclass of a Class Object
				
				
				
				e64. 
				    Listing the Interfaces That a Class Implements
				
				
				
				e65. 
				    Listing the Interfaces That an Interface Extends
				
				
				
				e66. 
				    Getting the Package of a Class
				
				
				
				e67. 
				    Determining from Where a Class Was Loaded
				
				
				
				e68. 
				    Loading a Class That Is Not on the Classpath
				
				
				
				e69. 
				    Dynamically Reloading a Modified Class
				
				
				
				
				
				
				
				
				        See also: 
				
				    Arrays
				  
				
				
				    Assertions
				  
				
				
				    Commands
				  
				
				
				    Numbers
				  
				
				
				    Objects
				  
				
				
				    Strings
				  
				
				
				    System Properties
				  
				
				
				    Threads
				  
				
				
				
				
				
				
				
				
				
				© 2002 Addison-Wesley.