java Programming Glossary: getinstance

http://stackoverflow.com/questions/1050991/singleton-with-arguments-in-java

is loaded on the first execution of Singleton.getInstance or the first access to SingletonHolder.INSTANCE not before... Singleton INSTANCE new Singleton public static Singleton getInstance return SingletonHolder.INSTANCE While I really like the way.. int x this.x x public synchronized static Singleton getInstance int x if singleton null singleton new Singleton x return singleton..

Java Double Checked Locking

http://stackoverflow.com/questions/1625118/java-double-checked-locking

static boolean initialized false public static Test getInstance if initialized synchronized Test.class if initialized instance..

Using static variables in Android

http://stackoverflow.com/questions/2475978/using-static-variables-in-android

I usually do private static A the_instance public static A getInstance if the_instance null the_instance new A return the_instance..

Thread safety in Singleton

http://stackoverflow.com/questions/2912281/thread-safety-in-singleton

private Singleton public static synchronized Singleton getInstance if instance null instance new Singleton return instance Does..

Pattern for lazy thread-safe singleton instantiation in java

http://stackoverflow.com/questions/3635396/pattern-for-lazy-thread-safe-singleton-instantiation-in-java

Singleton private Singleton ... public static Singleton getInstance return instance Better yet make it an enum public enum Singleton..

Singletons vs. Application Context in Android?

http://stackoverflow.com/questions/3826905/singletons-vs-application-context-in-android

effects which may suddenly surface when moving calls to getInstance from one scope to another . Visibility has been mentioned as..

Java - Leaking this in constructor

http://stackoverflow.com/questions/3921616/java-leaking-this-in-constructor

... addWindowFocusListener this public static Singleton getInstance ... instance new Singleton ... New code simplified private Singleton.. simplified private Singleton ... public static Singleton getInstance ... instance new Singleton addWindowFocusListener instance .....

Generate MD5 hash in Java

http://stackoverflow.com/questions/415953/generate-md5-hash-in-java

improve this question MessageDigest is your friend. Call getInstance MD5 to get an MD5 message digest you can use. share improve..

Hibernate Validation of Collections of Primitives

http://stackoverflow.com/questions/4308224/hibernate-validation-of-collections-of-primitives

@Override public T extends ConstraintValidator T getInstance Class T key T instance null try instance key.newInstance catch..

When should EntityManagerFactory instance be created/opened?

http://stackoverflow.com/questions/4543947/when-should-entitymanagerfactory-instance-be-created-opened

emf private EmProvider public static EmProvider getInstance return singleton public EntityManagerFactory getEntityManagerFactory.. em null List Object out null try em EmProvider.getInstance .getEntityManagerFactory .createEntityManager Query query em.createNativeQuery.. should I not close the EMF itself here EmProvider.getInstance .closeEmf I made sure to close EntityManager em within method..

Android - What's the best way to share data between activities?

http://stackoverflow.com/questions/4878159/android-whats-the-best-way-to-share-data-between-activities

DataHolder holder new DataHolder public static DataHolder getInstance return holder From the launched activity String data DataHolder.getInstance.. holder From the launched activity String data DataHolder.getInstance .getData Use application singleton The application singleton.. Before launching the activity DataHolder.getInstance .save someId someObject From the launched activity DataHolder.getInstance..

Static references are cleared--does Android unload classes at runtime if unused?

http://stackoverflow.com/questions/5105097/static-references-are-cleared-does-android-unload-classes-at-runtime-if-unused

context this.context context public static RootFactory getInstance return instance public LanguageSupport getLanguageSupport return.. or Service is started. Now here is the problem the getInstance method sometimes comes back as null even when invoked on the.. UI thread. I could have as well synchronized the call to getInstance but that's more expensive since it requires claiming an object..

Using Singleton design pattern for SQLiteDatabase

http://stackoverflow.com/questions/6905524/using-singleton-design-pattern-for-sqlitedatabase

1 private Context mCxt public static DatabaseHelper getInstance Context ctx use the application context as suggested by CommonsWare... direct instantiation. make call to static factory method getInstance instead. private DatabaseHelper Context ctx super context DATABASE_NAME..

Android REST client, Sample?

http://stackoverflow.com/questions/8267928/android-rest-client-sample

public class HypotheticalApi public static HypotheticalApi getInstance Choose an appropriate creation strategy. Request a User Profile.. Activity or Service HypotheticalApi myApi HypotheticalApi.getInstance myApi.getUserProfile techie.curious new GetResponseCallback..