java Programming Glossary: it'llhow can I lookup a Java enum from its string value? http://stackoverflow.com/questions/1080904/how-can-i-lookup-a-java-enum-from-its-string-value
How to check if a String is a numeric type in Java http://stackoverflow.com/questions/1102891/how-to-check-if-a-string-is-a-numeric-type-in-java Be careful with the above RegEx mechanism though as it'll fail if your using non latin i.e. 0 to 9 digits. For example..
How to do query auto-completion/suggestions in Lucene? http://stackoverflow.com/questions/120180/how-to-do-query-auto-completion-suggestions-in-lucene queries. When typing 'inter' into the search field it'll come back with a list of suggested queries such as 'internet'..
Java: Parse a mathematical expression given as a string and return a number http://stackoverflow.com/questions/1432245/java-parse-a-mathematical-expression-given-as-a-string-and-return-a-number a trusted source and the usual precautions but otherwise it'll work straight off. If you want to go a more complicated but..
Overloaded method selection based on the parameter's real type http://stackoverflow.com/questions/1572322/overloaded-method-selection-based-on-the-parameters-real-type something Is there a way to modify this code so that it'll print foo 12 foo foobar and foo Object o java oop share improve..
In Java, why must equals() and hashCode() be consistent? http://stackoverflow.com/questions/1678205/in-java-why-must-equals-and-hashcode-be-consistent someone show me a simple example where if this is violated it'll cause a problem I think it has something to do with if you use..
At runtime, find all classes in a Java application that extend a base class http://stackoverflow.com/questions/205573/at-runtime-find-all-classes-in-a-java-application-that-extend-a-base-class I can simply create a new class that extends Animal and it'll get picked up automatically. UPDATE 10 16 2008 9 00 a.m. Pacific..
Class with single method — best approach? http://stackoverflow.com/questions/205689/class-with-single-method-best-approach code with test code. Again we can wrap them up but it'll require us to change large parts of our code just to be able..
Handling exceptions from Java ExecutorService tasks http://stackoverflow.com/questions/2248131/handling-exceptions-from-java-executorservice-tasks are not passed to this method. When you submit a Runnable it'll get wrapped in a Future. Your afterExecute should be something..
Why does (360 / 24) / 60 = 0 … in Java http://stackoverflow.com/questions/2475652/why-does-360-24-60-0-in-java you change the type of an appropriate operand to a float it'll work fine float div 360 24f 60 div is now 0.25 Note that if..
How to implement a possibility for user to post some html-formatted data in a safe way? http://stackoverflow.com/questions/3410526/how-to-implement-a-possibility-for-user-to-post-some-html-formatted-data-in-a-sa will not escape the response and keep some html tags then it'll be a great security hole. But I don't see any other solution..
How do you subtract Dates in Java? http://stackoverflow.com/questions/3526485/how-do-you-subtract-dates-in-java
Best way to represent a fraction in Java? http://stackoverflow.com/questions/474535/best-way-to-represent-a-fraction-in-java . It keeps a BigInteger numerator and denominator so it'll never overflow. But it'll be a tad slow for a lot of operations.. numerator and denominator so it'll never overflow. But it'll be a tad slow for a lot of operations that you know will never..
How can I get an http response body as a string in Java? http://stackoverflow.com/questions/5769717/how-can-i-get-an-http-response-body-as-a-string-in-java content encoding from the response if available. Otherwise it'll default to UTF 8 as a best guess instead of using the local..
Should I use Java date and time classes or go with a 3rd party library like Joda Time? http://stackoverflow.com/questions/589870/should-i-use-java-date-and-time-classes-or-go-with-a-3rd-party-library-like-joda similar library you'll have a head start on learning it as it'll be similar Cons It's another API to learn although the docs..
http://stackoverflow.com/questions/6878275/how-get-the-base-url it yet shorter. Put it somewhere in the master template it'll be available to all pages c set var root value # request.contextPath..
Update data in ListFragment as part of ViewPager http://stackoverflow.com/questions/7379165/update-data-in-listfragment-as-part-of-viewpager I've no idea if this is a valid way of doing it but it'll do until something better is suggested. share improve this..
What is the difference between Serializable and Externalizable in Java? http://stackoverflow.com/questions/817853/what-is-the-difference-between-serializable-and-externalizable-in-java of your class. No need to implement any other logic it'll just work. The Java runtime will use reflection to figure out..
How to set up java logging using a properties file? (java.util.logging) http://stackoverflow.com/questions/960099/how-to-set-up-java-logging-using-a-properties-file-java-util-logging Java prop file parser isn't all that smart I'm not sure it'll handle this. But I'll go look at the docs again.... In the mean..
How can I determine whether a Java class is abstract by reflection http://stackoverflow.com/questions/1072890/how-can-i-determine-whether-a-java-class-is-abstract-by-reflection docs. java class abstract share improve this question It'll have abstract as one of its modifiers when you call getModifiers..
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 23583040 11108810 8918249 I'll leave the answer to you. It'll teach you how substring works what are the advantages of such..
What?䏭 the best profanity filter which supports Java integration? http://stackoverflow.com/questions/1521646/whats-the-best-profanity-filter-which-supports-java-integration out this Open Source profanity filter from KickJava.com . It'll replace a bad word with something similar to @ share improve..
i want to call a java class from the worklight adapter http://stackoverflow.com/questions/15428243/i-want-to-call-a-java-class-from-the-worklight-adapter simply doesn't in others. The same is true for machines. It'll work one place but not another if you're not aware of what's..
Replace first line of a text file in Java http://stackoverflow.com/questions/202148/replace-first-line-of-a-text-file-in-java to perform the reading and writing inside the same file. It'll be a bit more complex though. Let me know if you need details..
How to draw a route between two geopoints on the Android http://stackoverflow.com/questions/2125357/how-to-draw-a-route-between-two-geopoints-on-the-android This application is contained with source code... It'll solve ur probs. http www.anddev.org the_friend_finder_ _mapactivity_using_gps_..
How do I programmatically determine operating system in Java? http://stackoverflow.com/questions/228477/how-do-i-programmatically-determine-operating-system-in-java all the properties provided by your Java implementations. It'll give you an idea of what you can find out about your Java environment..
Converting XML to Java objects [closed] http://stackoverflow.com/questions/3276149/converting-xml-to-java-objects XML and map the values into Java objects using XPath. It'll be some work to do it once but you'll have exactly what you..
Java: Generic methods and numbers http://stackoverflow.com/questions/3850970/java-generic-methods-and-numbers primitive wrapper type and implement them separately. It'll be way too much of a headache to make it generic arithmetic..
Java Reflection calling constructor with primitive types http://stackoverflow.com/questions/3925587/java-reflection-calling-constructor-with-primitive-types into test method one with types and another with values. It'll also remove ambiguity if you have a constructor MyClass Object..
http://stackoverflow.com/questions/3950439/equals-method-for-objects types is really comparing memory addresses in Java. It'll only return true if they both refer to the same object in memory...
http://stackoverflow.com/questions/4114742/simple-calculator-in-jsp right Integer sum left right request.setAttribute sum sum It'll be available as sum . request.getRequestDispatcher calculator.jsp..
Make a JPanel not draw its background (Transparent) http://stackoverflow.com/questions/54926/make-a-jpanel-not-draw-its-background-transparent java gui share improve this question setOpaque false It'll pass off painting the background to its parent which may draw..
Why do cookie values with whitespace arrive at the client side with quotes? http://stackoverflow.com/questions/572482/why-do-cookie-values-with-whitespace-arrive-at-the-client-side-with-quotes version 1 cookies. Even not the current MSIE 9 release. It'll interpret the quotes being part of the whole cookie value and..
NetBeans Tips and Tricks [closed] http://stackoverflow.com/questions/628830/netbeans-tips-and-tricks Stop Build Run and NetBeans will close the window for you. It'll even let you close multiple applications at once. These may..
Exception in thread “main” java.lang.RuntimeException: Matrix is singular http://stackoverflow.com/questions/6290459/exception-in-thread-main-java-lang-runtimeexception-matrix-is-singular Try it and see where it goes wrong. Try a SVD solution. It'll tell you what the null space for your matrix is. share improve..
How to retrieve image from database and display in JSP via Servlet? http://stackoverflow.com/questions/6315671/how-to-retrieve-image-from-database-and-display-in-jsp-via-servlet the browser won't know what to do with the HTTP response. It'll display a Save As popup when you enter its URL straight in address..
Spring + Hibernate session lifecycle http://stackoverflow.com/questions/8724259/spring-hibernate-session-lifecycle can check the log if you are using logging for your app. It'll be like main INFO AnnotationSessionFactoryBean Closing Hibernate..
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