¡@
java Programming Glossary: lookupIs a Java hashmap really O(1)? http://stackoverflow.com/questions/1055243/is-a-java-hashmap-really-o1 interesting claims on SO re Java hashmaps and their O 1 lookup time. Can someone explain why this is so Unless these hashmaps.. a dataset that contains collisions. In which case the lookup would be O n rather than O 1 . Can someone explain whether they.. what's used. The only data type that has a WORST CASE lookup time of O 1 is a fixed length array of fixed length structures..
How to Find Default Charset/Encoding in Java? http://stackoverflow.com/questions/1749064/how-to-find-default-charset-encoding-in-java csn String AccessController.doPrivileged pa Charset cs lookup csn if cs null return cs return forName UTF 8 return defaultCharset.. csn String AccessController.doPrivileged pa Charset cs lookup csn if cs null defaultCharset cs else defaultCharset forName..
Why is my Spring @Autowired field null? http://stackoverflow.com/questions/19896870/why-is-my-spring-autowired-field-null on the service object working configurable Manual bean lookup not recommended This approach is suitable only for interfacing..
Fastest way to determine if an integer's square root is an integer http://stackoverflow.com/questions/295579/fastest-way-to-determine-if-an-integers-square-root-is-an-integer restricting yourself to integer only domain. Maintaining a lookup table is impratical since there are about 2 31.5 integers whose.. difference between or and switch . I also tried making a lookup table as a private static array of 64 boolean values . Then.. of either switch or or statement I would just say if lookup int n 0x3F test else return false . To my surprise this was..
http://stackoverflow.com/questions/435553/java-reflection-performance 35 no reflection 465 using reflection Bear in mind the lookup and the instantiation are done together and in some cases the.. the instantiation are done together and in some cases the lookup can be refactored away but this is just a basic example. Even..
Why can't I define a static method in a Java interface? http://stackoverflow.com/questions/512877/why-cant-i-define-a-static-method-in-a-java-interface the parent class of the class is obtained and the lookup is repeated there. This proceeds until the method is found or..
How does a HashMap work in Java? http://stackoverflow.com/questions/6493605/how-does-a-hashmap-work-in-java bucket can store more then one key value pair . When you lookup a value in the hashmap by giving it a key it will first look..
how to sort Map values by key in Java http://stackoverflow.com/questions/922528/how-to-sort-map-values-by-key-in-java 1000 items to 10 000 doesn't really affect your time to lookup an element but for a TreeMap the lookup time will be about 3.. your time to lookup an element but for a TreeMap the lookup time will be about 3 times slower assuming Log 2 . Moving from..
EL access a map value by Integer key http://stackoverflow.com/questions/924451/el-access-a-map-value-by-integer-key I tracked down the problem. Apparently name 1 does a map lookup with the number as a Long . I figured this out when I changed..
http://stackoverflow.com/questions/14146570/calling-a-getter-in-java-though-reflection-whats-the-fastest-way-to-repeatedly . Its Javadoc writes Using factory methods in the Lookup API any class member represented by a Core Reflection API object.. Method can be converted to a method handle using Lookup.unreflect. The resulting method handles generally provide more..
Get database connection from a Connection Pool http://stackoverflow.com/questions/4491596/get-database-connection-from-a-connection-pool
Tomcat vs Weblogic JNDI Lookup http://stackoverflow.com/questions/47676/tomcat-vs-weblogic-jndi-lookup vs Weblogic JNDI Lookup The Weblogic servers we are using have been configured to allow..
Android: The type java.lang.Enum cannot be resolved http://stackoverflow.com/questions/5293110/android-the-type-java-lang-enum-cannot-be-resolved
How to hide the internal structure of a Java API to the rest of the world http://stackoverflow.com/questions/5872124/how-to-hide-the-internal-structure-of-a-java-api-to-the-rest-of-the-world to implement my second bullet point I mean using a Service Lookup class e.g. public class Lookup private static final Foo foo.. I mean using a Service Lookup class e.g. public class Lookup private static final Foo foo new FooImpl public static Foo getFoo..
How to use JNDI DataSource provided by Tomcat in Spring? http://stackoverflow.com/questions/9183321/how-to-use-jndi-datasource-provided-by-tomcat-in-spring 7 Context Resource Links Reference Spring 3 JEE JNDI Lookup XML Schema Reference Spring 3 JndiObjectFactoryBean JavaDoc..
http://stackoverflow.com/questions/9272232/fft-library-in-android-sdk for real time audio analysis public class FFT int n m Lookup tables. Only need to recompute when size of FFT changes. double..
|
