Why Javascript is called Javascript (there is no relation between Java and Javascript) why its not called HTMLScript or XMLScript. Any historical reason for this?
Hi,
I am doing a project in which i require btree or b+tree data structure. but its not an important part of project. it would take my time to write a code for it. I googled it but didn't get anything....
So, can anyone provide java code for btree or b+tree implementation (with insert, delete, search algorithms)??????
it should accept string as input and form btree or b+tree of these string.
Is there a generic way to cache any type of object (be in a java class, or a word document etc.) to memory or disk?
Is simply serializing the object, and retaining the file extension (if it has one) enough to rebuild the object?
A hypothetical scenario:
I've got a project whose source compliance level is specified to 1.5.
Now I compile this project with two different JDKs: At first with JDK 6 Update 7 and then with JDK 6 Update 20.
Do these two different JDKs produce different Java byte code, although they only differ in their Update version?
Hi folks,
I have a little program allowing users to type-in some regular expressions. afterwards i like to check if this input is a valid regex or not.
I'm wondering if there is a build-in method in Java, but could not find such jet.
Can you give me some advice?
Best regards
Phil
When I learned Java, I was told that the arraylist works this way:
It creates an array with room for 10 elements.
When the 11th element is added, it is created a new list with room for 20 elements, and the 10 elements are copied into the new array. This will repeat as until there are no more elements to add, or to a maximum size.
Is the List in .NET constructed the same way?
I have a java class containing all the columns of a database table as attributes (member variables) and corresponding getters and setters.
I want to have a method in this class called getColumnCount() that returns the number of columns (i.e. the number of attributes in the class)? How would I implement this without hardcoding the number? I am open to critisims on this in general and suggestions. Thanks.
Is there a way to delete unused indexes in Google App Engine Java application?
The only one way I was able to find is to create an empty Python GAE application and run the following command:
appcfg.py vacuum_indexes /path/to/myapp/
Is there a more intelligent way?
How can I read wireless signal strength In C++ and Java ?
Please provide a code snippet, a link to a library, or anything else that might show me how to accomplish this?
I want to refer to a static Java variable in my styles.xml, is that possible? Here's a pseudo-xml example:
<style name="Artwork">
<item name="android:background">@drawable/border_{Constants.MY_COLOR}</item>
</style>
By using java reflection, we can easily know if an object is an array. What's the easiest way to tell if an object is a collection(Set,List,Map,Vector...)?
I asked a question about Garbage Collection in Java in this topic.
But the answer I got, gave me another question.
Someone mentioned that classes can be collected by the garbage collector to.
Is this true?
And if it is true, how does this work?
Hi All,
How can I measure the speed of code written in Java?
I planning to develop software which will solve Sudoku using all presently available AI and ML algorithms and compare time against simple brute-force method. I need to measure time of each algorithm, I would like to ask for suggestions on what is the best way of doing that? Very important, program must be useful on any machine regardless to CPU power/memory.
Thank you.
Hi,
I need a Java way to find a running Win process from which I know to name of the executable. I want to look whether it is running right now and I need a way to kill the process if I found it.
Thank you! Greetz, GHad
Here's an excerpt from Sun's Java tutorials:
A switch works with the byte, short, char, and int primitive data types. It also works with enumerated types (discussed in Classes and Inheritance) and a few special classes that "wrap" certain primitive types: Character, Byte, Short, and Integer (discussed in Simple Data Objects ).
There must be a good reason why the long primitive data type is not allowed. Anyone know what it is?
Hello Guys,
I had made one Java Swing based application.
On my application,if i click anywhere on the JFrame or anything, then my right click is not working?
i had not set anything like that..then why is not working?
Basically my key board was not working then i try to copy - paste data using mouse then, i came about to know that...my right click is not working on any area of my application...
Hi all,
I am new to this kind of application and looking for some sample code how to connect to remote server using SSH , execute commands and get output back using java as programming language.
Thanks in advance.....
Regards,
Devayani
Given:
Object innerProxy = ...
Object proxy = java.lang.reflect.Proxy.
newProxyInstance(Thread.currentThread().getContextClassLoader(),
new Class[]{type},
innerProxy);
How can I extract the innerProxy object from proxy?
I'm working on an upgrade project and build management is done in Maven 1.0.2. Java version will change to J2SE 5.
Please include in your answer if you have first hand experience on that particular combination (Maven 1.0.2 and J2SE 5)
Thanks
hdk
Hi,
Today I got this question for which I think I answered very bad. I said stream is a data that flows and reader is a technique where we read from that is a static data. I know this is an awful answer, so please provide me the crisp difference and definitions between these two with example in Java.
Thanks.
I write an application in Java. I get form a database a table (clients) which contains fields like:
name | surname | adress
What is the best solution to store this data in my app? Should I create an object for each client and store these objects in a list or set?
The table contains about 100 records and it's already sorted.
Thanks in advance.
I need to convert XML data to Java objects. What would be best practice to convert this XML data to object?
Idea is to fetch data via a web service (it doesn't use WSDL, just HTTP GET queries, so I cannot use any framework) and answers are in XML. What would be best practice to handle this situation?
Is there any good reason to avoid unused import statements in Java? As I understand it, they are there for the compiler, so lots of unused imports won't have any impacts on the compiled code. Is it just to reduce clutter and to avoid naming conflicts down the line?
(I ask because Eclipse gives a warning about unused imports, which is kind of annoying when I'm developing code because I don't want to remove the imports until I'm pretty sure I'm done designing the class.)