这个压缩包里的都是超级经典的java例子

				
				
				
				Inserting an Element into a Sorted List (Java Developers Almanac Example)
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				The Java Developers Almanac 1.4
				
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				    java.util
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				        Sorted Collections
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				  e362. Inserting an Element into a Sorted List
				
				This example demonstrates how to determine the index at which an
				element should be inserted into a sorted list.  Although 
				binarySearch() is used to locate existent elements, it can also
				be used to determine the insert index for non-existent elements.  
				Specifically, the insertion index is computed in the following way:
				insert-index = (-return-value)-1
				
				
				    // Create a list with an ordered list of items
				    List sortedList = new LinkedList();
				    sortedList.addAll(Arrays.asList(new String[]{"ant", "bat", "cat", "dog"}));
				    
				    // Search for the non-existent item
				    int index = Collections.binarySearch(sortedList, "cow");      // -4
				    
				    // Add the non-existent item to the list
				    if (index < 0) {
				        sortedList.add(-index-1, "cow");
				    }
				
				
				
				
				             Related Examples
				
				
				
				
				e358. 
				    Creating a Sorted Set
				
				
				
				e359. 
				    Sorting an Array
				
				
				
				e360. 
				    Finding an Element in a Sorted Array
				
				
				
				e1075. 
				    Inserting an Element into a Sorted Array
				
				
				
				e361. 
				    Finding an Element in a Sorted List
				
				
				
				
				
				
				
				
				        See also: 
				
				    Arrays
				  
				
				
				    Bits
				  
				
				
				    Collections
				  
				
				
				    Dates
				  
				
				
				    Hash Tables
				  
				
				
				    Lists
				  
				
				
				    Property Files
				  
				
				
				    Sets
				  
				
				
				    Time
				  
				
				
				    Timers
				  
				
				
				
				
				
				
				
				
				
				© 2002 Addison-Wesley.