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How do you return a JSON object from a Java Servlet
How do you return a JSON object form a Java servlet.
13 Answers
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Is it good practice to use java.lang.String.intern()?
The Javadoc about String.intern() doesn't give much detail. (In a nutshell: It returns a canonical representation of the string, allowing interned strings to be compared using == )
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How to insert a SQLite record with a datetime set to 'now' in Android application?
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You cannot use the datetime function using the Java wrapper "ContentValues". Either you can use :
SQLiteDatabase.execSQL so you can enter a raw SQL query.
mDb.execSQL("INSERT INTO "+DATABASE_TABLE+" VALUES (null, datetime()) ");
Or the java date time capabilities :
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Interfaces with static fields in java for sharing 'constants'
I'm looking at some open source Java projects to get into Java and notice a lot of them have some sort of 'constants' interface.
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Best practice to mark deprecated code in Ruby?
...cated, so the people using it can easily check their code and catch up. In Java you set @Deprecated and everybody knows what this means.
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Android: Difference between Parcelable and Serializable?
...lizable or Parcelable interface.
Serializable
Serializable is a standard Java interface. You can just implement Serializable interface and add override methods. The problem with this approach is that reflection is used and it is a slow process. This method creates a lot of temporary objects and ca...
Java GUI frameworks. What to choose? Swing, SWT, AWT, SwingX, JGoodies, JavaFX, Apache Pivot? [close
There is quite a lot of gui frameworks out there for java, but what is recognized as today's framework of choice?
9 Answers...
Default value of 'boolean' and 'Boolean' in Java
...fault values of boolean (primitive) and Boolean (primitive wrapper) in Java?
8 Answers
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What is the proper way to re-attach detached objects in Hibernate?
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According to the Hibernate javadoc (but not JPA), lock(LockMode.NONE) can in fact be called on a transient object, and it does reattach the entity to the session. See stackoverflow.com/a/3683370/14379
– seanf
Jul...
Converting stream of int's to char's in java
...this is not what the OP is asking about. He is using Reader's read method: java.sun.com/j2se/1.4.2/docs/api/java/io/Reader.html#read() The question he is asking is how to convert value returned by this method into char.
– Vanuan
May 7 '09 at 21:43
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