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java Programming Glossary: classesOverriding equals and hashCode in Java http://stackoverflow.com/questions/27581/overriding-equals-and-hashcode-in-java equals to compute hashCode . Use the excellent helper classes EqualsBuilder and HashCodeBuilder from the Apache Commons Lang..
What is a serialVersionUID and why should I use it? http://stackoverflow.com/questions/285793/what-is-a-serialversionuid-and-why-should-i-use-it the sender and receiver of a serialized object have loaded classes for that object that are compatible with respect to serialization... However it is strongly recommended that all serializable classes explicitly declare serialVersionUID values since the default..
How to call SOAP web service in Android http://stackoverflow.com/questions/297586/how-to-call-soap-web-service-in-android would like to have IDE support for generating the plumbing classes. I just need the easiest most elegant way to contact a WSDL..
Download a file with Android, and showing the progress in a ProgressDialog http://stackoverflow.com/questions/3028306/download-a-file-with-android-and-showing-the-progress-in-a-progressdialog true The AsyncTask will look like this usually subclasses of AsyncTask are declared inside the activity class. that way.. a service . In the next example we are going to use two classes you may not be aware of ResultReceiver and IntentService . ResultReceiver..
GUI not working after rewriting to MVC http://stackoverflow.com/questions/3066590/gui-not-working-after-rewriting-to-mvc number of EventListener subinterfaces and implementing classes. A third option is to use a PropertyChangeListener as shown..
How to avoid Java Code in JSP-Files? http://stackoverflow.com/questions/3177733/how-to-avoid-java-code-in-jsp-files whenever the same functionality is possible by tag classes. Here are several cites of relevance From JSP 1.2 Specification..
A better Java JSON library? [closed] http://stackoverflow.com/questions/338586/a-better-java-json-library of them require that you place Java annotations in your classes something that you can not do if you do not have access to the..
Design Patterns web based applications http://stackoverflow.com/questions/3541077/design-patterns-web-based-applications on the request. The Model is to be represented by Javabean classes. This is often further dividable in Business Model which contains.. Or dynamically based on a scan in the classpath for classes implementing a certain interface and or annotation pseudo for.. terms this is what the FacesContext and ExternalContext classes are doing. Then there's the State pattern for the case that..
Can a progress bar be used in a class outside main? http://stackoverflow.com/questions/4637215/can-a-progress-bar-be-used-in-a-class-outside-main 10 rows. Based on how many of those rows have text 1 of 9 classes is called two rows must have text . The called class performs.. bar tied to. Here is an example of one of the called classes each class is similar but different enough to warrant a new..
http://stackoverflow.com/questions/469695/decode-base64-data-in-java or a java.io.InputStream . Just beware that the sun. classes are not officially supported by Sun. EDIT Who knew this would..
How do I write a correct micro-benchmark in Java? http://stackoverflow.com/questions/504103/how-do-i-write-a-correct-micro-benchmark-in-java your timing phase since printing loads and initializes classes. Do not load new classes outside of the warmup phase or final.. printing loads and initializes classes. Do not load new classes outside of the warmup phase or final reporting phase unless.. loading specifically and in that case load only the test classes . Rule 2 is your first line of defense against such effects...
How to: generic array creation http://stackoverflow.com/questions/529085/how-to-generic-array-creation in Java it was implemented using erasure so generic classes don't know what type argument they were created with at run..
Should I avoid the use of set(Preferred|Maximum|Minimum)Size methods in Java Swing? http://stackoverflow.com/questions/7229226/should-i-avoid-the-use-of-setpreferredmaximumminimumsize-methods-in-java-swi is yes won't this lead to a proliferation of LayoutManager classes which will become difficult to maintain In a situation where.. is yes won't this lead to a proliferation of LayoutManager classes which will become difficult to maintain In a situation where..
What is the equivalent of Java's final in C#? http://stackoverflow.com/questions/1327544/what-is-the-equivalent-of-javas-final-in-c in C# depending on the context in which it is used. Classes To prevent subclassing inheritance from the defined class Java..
How one interface can be used for different background android tasks? http://stackoverflow.com/questions/14253421/how-one-interface-can-be-used-for-different-background-android-tasks is stored as Interface Reference in AsynTask SubClasses like this private Context context null private DelegateTaskCompleted.. there are other activity classes which use same AsynTask Classes GettingBeaconsList and GettingAirports protected void onPostExecute..
What does “Could not find or load main class” mean? http://stackoverflow.com/questions/18093928/what-does-could-not-find-or-load-main-class-mean corresponds to the root of the qualified name space. Classes are located in the directory structure beneath that root by..
Why does Java prohibit static fields in inner classes? http://stackoverflow.com/questions/1953530/why-does-java-prohibit-static-fields-in-inner-classes and methods contradicts this motivation 8.1.2 Inner Classes and Enclosing Instances An inner class is a nested class that..
Do/can abstract classes replace interfaces? http://stackoverflow.com/questions/2124951/do-can-abstract-classes-replace-interfaces Sun docs make a more detailed comparison Abstract Classes versus Interfaces Unlike interfaces abstract classes can contain..
Difference between Inheritance and Composition http://stackoverflow.com/questions/2399544/difference-between-inheritance-and-composition
Validating input using java.util.Scanner http://stackoverflow.com/questions/3059333/validating-input-using-java-util-scanner a single char in Java References Java Tutorials Essential Classes Regular Expressions regular expressions.info Character Classes.. Regular Expressions regular expressions.info Character Classes Example 4 Using two Scanner at once Sometimes you need to scan..
Right way to implement equals contract http://stackoverflow.com/questions/3181339/right-way-to-implement-equals-contract and HashCode in view of persistence Hibernate Persistent Classes implementing equals and hashCode Related SO question Overriding..
http://stackoverflow.com/questions/3295496/what-is-a-java-bean-exactly the class implementing the java.io.Serializable interface. Classes that do not implement this interface will not have any of their..
What does JVM flag CMSClassUnloadingEnabled actually do? http://stackoverflow.com/questions/3334911/what-does-jvm-flag-cmsclassunloadingenabled-actually-do question The standard Oracle Sun VM look on the world is Classes are forever. So once loaded they stay in memory even if no one..
Are static fields open for garbage collection? http://stackoverflow.com/questions/453023/are-static-fields-open-for-garbage-collection for garbage. Check out the JLS Section 12.7 Unloading of Classes and Interfaces A class or interface may be unloaded if and only.. class loader may be reclaimed by the garbage collector ... Classes and interfaces loaded by the bootstrap loader may not be unloaded...
What does “…” mean in Java? [duplicate] http://stackoverflow.com/questions/4618930/what-does-mean-in-java the Java Language Specification Third Edition Chapter 8 Classes . Buried in there is this nugget If the last formal parameter..
How do synchronized static methods work in Java? http://stackoverflow.com/questions/578904/how-do-synchronized-static-methods-work-in-java code are preventing getObjectById being called for all Classes when it is called by a particular class. public class Utils..
Creating a memory leak with Java http://stackoverflow.com/questions/6470651/creating-a-memory-leak-with-java The ClassLoader in turn keeps a reference to all the Classes it has loaded. It gets worse because in many JVM implementations.. loaded. It gets worse because in many JVM implementations Classes and ClassLoaders are allocated straight into permgen and are..
Java inner class and static nested class http://stackoverflow.com/questions/70324/java-inner-class-and-static-nested-class
Java Generics Wildcarding With Multiple Classes http://stackoverflow.com/questions/745756/java-generics-wildcarding-with-multiple-classes Generics Wildcarding With Multiple Classes I want to have a Class object but I want to force whatever..
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