Tagged Questions

Java, not to be confused with JavaScript, is an object-oriented language and runtime environment (JRE). Java programs are compiled to bytecode and run in a virtual machine (JVM).

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oracle 10g pl sql why do i have to click save so that my insert query will save to database

why do i have to click save button in the upperleft on formservlet so that my insert query will save to database? im sorry guys, quite newbie here thanks here is my pl sql code in add button ...
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java.net.UnknownHostException: www.terracotta.org

Getting the following error when Jboss server start up. java.net.UnknownHostException: www.terracotta.org at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177) ~[na:1.6.0_11] at ...
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Block UI in GWT

in my GWT Code, I have FileUploader . i want, when user click on Button to send data from Client to server, my GWT PAGE block, and a picture show me that processing is working. how can i solve this ...
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Best way to create animations in java

What would you say is the best way to create animated sprites in Java, I am reading a book and it uses an ArrayList to add frames to the animation. I find it quite difficult to understand. Is using ...
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1answer
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Why do we need to synchronize on the same object for notify() to work

I was getting java.lang.IllegalMonitorStateException. I referred this question and it solved my problem. The first answer is To be able to call notify() you need to synchronize on the same object. ...
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How to cache all the data files of mongodb?

What I am trying to do is cache all the data that I have written into mongodb. So that all client requests are served from the cache. Should I consider ehcache or memcache. Note the mongodb data is ...
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how to change table rows by using tab key

i want to change table row when i pressing the tab key.Here i am using struts tag.is there any idea please post... <s:iterator value="addresslist"> <tr> <td><s:property ...
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Google App Engine: When is auto id available?

So I'm creating user accounts in GAE's data store (using Java)... Entity account = new Entity(DATASTORE_KIND, accountAncestorKey); Key accountKey = datastore.put(account); The entity is created, ...
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Is there any tool to convert android app to facebook app

Hi friends is there any way to convert android app to Facebook app? else How to convert android app to flash app? Please give your suggestions.
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3answers
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printing array reference variable on console

what does the output means... if we print 'intarray' we get some hash code... & same is with 'floatarray' but if we print 'chararray' we doesn't get anything class Test { public static void ...
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Eclipse. Copied code is hard to read. How to disable warnings and delete comments?

That is it, I'm tired of that problem: I have some source of java code it could be a manual or web-site or whatever but the format of this source often is not suitable for reading, so I copy it to a ...
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zip file getting corrupted sometimes from few Android devices

What might be the root cause for getting zip file corrupted.?? Am uploading zip to server using FTP from Android. Few files are getting corrupted after they are uploaded. I tried to resolve this in ...
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How to Segregate comman fields in Hibernate annotaion mapping

I am using spring 3 and hibernate4.2 based annotation configuration in my project, I have number of database tables (view objects/entities) with two common fields createdDate & updatedDate. I want ...
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2answers
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invalidClassException: please help getting these errors

I am getting this error when i run the program: java.io.InvalidClassException: Food; local class incompatible: stream classdesc serialVersionUID = -1986042743597353721, local class serialVersionUID = ...
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Enum Example Explanation

Here is a program taken from the SCJP 6 example. Here, we create a enum with different coffee sizes, and declare a private variable called ounces to get the ounce value part of enumeration. I was not ...

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