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java Programming Glossary: surpriseIs it safe to get values from a java.util.HashMap from multiple threads (no modification)? http://stackoverflow.com/questions/104184/is-it-safe-to-get-values-from-a-java-util-hashmap-from-multiple-threads-no-modi which is Is my HashMap immutable . The answer might surprise you Java has a relatively complicated set of rules to determine..
http://stackoverflow.com/questions/10420040/jackson-2-0-with-spring-3-1
Is String Literal Pool a collection of references to the String Object, Or a collection of Objects http://stackoverflow.com/questions/11700320/is-string-literal-pool-a-collection-of-references-to-the-string-object-or-a-co one System.out.println System.identityHashCode two No surprise that both pairs are equal 23583040 23583040 8918249 8918249.. The first object is created the same way as above no surprise. It just takes a constant reference to already created String.. abc string and then calling substring 1 on it. Output No surprise here we have two different strings pointing to two different..
How install a specific jdk on Mac OS X? http://stackoverflow.com/questions/1577014/how-install-a-specific-jdk-on-mac-os-x downloads index.jsp I look for a mac version but i'm a bit surprise to have only downloadable version for linux window and solaris....
Modifying final fields in Java http://stackoverflow.com/questions/1615163/modifying-final-fields-in-java printed as output shown at the bottom as to not spoil the surprise immediately . The questions are Why do primitive and wrapped..
What is the memory consumption of an object in Java? http://stackoverflow.com/questions/258120/what-is-the-memory-consumption-of-an-object-in-java are costly too Multidimensional arrays it offers another surprise. Developers commonly employ constructs like int dim1 dim2 in..
Is an “infinite” iterator bad design? http://stackoverflow.com/questions/2622591/is-an-infinite-iterator-bad-design 1 2 3 5 8 13 21 34 EDIT In terms of the principle of least surprise I think it depends entirely on the context. For example what..
Difference between double… and double[] in formal parameter type declaration http://stackoverflow.com/questions/2888305/difference-between-double-and-double-in-formal-parameter-type-declaration is quite complicated and sometimes it does things that may surprise you. Consider this example static void count Object... objs..
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 say if lookup int n 0x3F test else return false . To my surprise this was just slightly slower. I'm not sure why. This is because..
Why is there no parameter contra-variance for overriding? http://stackoverflow.com/questions/2995926/why-is-there-no-parameter-contra-variance-for-overriding be an override of Q f A . Following the principle of least surprise it is much simpler both for the compiler implementor and the.. it is not feasible but because there would be quirks and surprises in code and considering that there are simple work arounds..
Why does int num = Integer.getInteger(“123”) throw NullPointerException? http://stackoverflow.com/questions/3123349/why-does-int-num-integer-getinteger123-throw-nullpointerexception System.getProperty method. Admittedly this can be quite a surprise. It's unfortunate that the library has surprises like this but.. be quite a surprise. It's unfortunate that the library has surprises like this but it does teach you a valuable lesson always look..
Java Generics: Cannot cast List<SubClass> to List<SuperClass>? http://stackoverflow.com/questions/3246137/java-generics-cannot-cast-listsubclass-to-listsuperclass of Tree. public class DataNode implements Tree To my surprise this works for array DataNode a2 new DataNode 0 Tree b2 a2 this..
Where's the official JSP tutorial http://stackoverflow.com/questions/4845032/wheres-the-official-jsp-tutorial I decided to see the official JavaEE6 tutorial. Much to my surprise there is nothing about JSP in the JavaEE6 tutorial . On the..
Which is the best library for XML parsing in java [closed] http://stackoverflow.com/questions/5059224/which-is-the-best-library-for-xml-parsing-in-java elements @XmlElement or attributes @XmlAttribute what a surprise RootElementClass adr new RootElementClass FileInputStream adrFile..
ByteBuffer.allocate() vs. ByteBuffer.allocateDirect() http://stackoverflow.com/questions/5670862/bytebuffer-allocate-vs-bytebuffer-allocatedirect is concerned are contiguous sequences of bytes. It's no surprise then that only byte buffers are eligible to participate in I..
Java Nimbus LAF with transparent text fields http://stackoverflow.com/questions/613603/java-nimbus-laf-with-transparent-text-fields better. See example images below. Conclusions The surprise at this behavior is due to a misinterpretation of what setOpaque..
What are the rules for evaluation order in Java? http://stackoverflow.com/questions/6800590/what-are-the-rules-for-evaluation-order-in-java books that stated the rules incorrectly so it is no surprise that lots of people have completely incorrect beliefs about..
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