Tagged Questions

Java is an object-oriented language and runtime environment (JRE). Java programs are platform independent, because they are compiled to bytecode and their execution is handled by a Virtual Machine called the Java VM or JVM.

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0answers
6 views

web scrapping on pages with javascripts

I have been doing web scraping for a few months now and always get stuck on pages which load data using javascript. I have a certain degree of success on such pages using HTMLunit but sometimes ...
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0answers
9 views

JDBC Connection Pooling vs Dependency Injection

I'm quite new to Java EE and Connection Pooling. I've already tried few pools and every single one of them had the following issue: ConnectionPoolDataSource source = new ConnectionPoolDataSource(); ...
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2answers
19 views

Rethrow checked exception from Runnable

I execute multiple tasks from my main class: ExecutorService executor = Executors.newFixedThreadPool(N); for (int i = 0; i < M; i++) { executor.execute(task); } executor .shutdown(); while ...
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1answer
10 views

How would you clean up URL from tracking query string variables?

I have some 1000s of URLs and the task is to count their occurrences and print top frequent. The problem occurs when single article has multiple URLs. Example below: ...
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votes
4answers
51 views

diff between boolean res=a==b and boolean res=(a==b)

can any one explain ? String a=new String("srihari"); String b=new String("srihari"); boolean res1=(a==b); // reference check System.out.println(r); // true boolean res2=a==b; // object check ...
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0answers
23 views

org.hibernate.exception.SQLGrammarException: Could not execute JDBC batch update. Why am I getting it?

While trying to write a file into the database, I am getting the following exception : org.hibernate.exception.SQLGrammarException: Could not execute JDBC batch update The following code,generates ...
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0answers
7 views

how to rescale binary character image?

http://cafefiles.naver.net/20130606_179/rise1925_1370463189365uKV60_PNG/%C1%A6%B8%F1_%BE%F8%C0%BD.png I tried to resize character images by bicubic algorithm in Java. but as you can see it linked , ...
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votes
1answer
18 views

Running Swing application in Unix Server

I have developed a Java Swing application. It works only in Windows OS. How can I run the same in Unix OS?
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3answers
18 views

BorderLayout.CENTER doesn't center

I can't get my JLabel to center in my JPanel after adding a ChartPanel to it: JPanel panel = new JPanel(new BorderLayout()); panel.add(visualiser(ternaire), ...
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0answers
14 views

Java and shadow copy databases/datasources

I trying to search in Google, Hibernate documentation, Spring Documentation some information: How I can configure my data sources in Spring Framework for create additional shadow copy of my MySQL db? ...
0
votes
1answer
12 views

Loading icon (progress) while logging into FTP in Android application

How can I get a loading icon (like a small circle running rund) while I am logging into a FTP server in an Android application? I know that there is a progress bar in the AsyncTask, but want to grey ...
1
vote
4answers
45 views

What is the best (performance + memory) between String and HashSet for checking duplicates

I want to do a simple implementation to do some operations based on a distinct Codes (aCode) among the bigCodeList contains duplicates. Below I have mentioned two approaches what i want to know is ...
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0answers
10 views

How to find xpath for all element presence on webpage using JAVA?

Requirement is to get the list of all object Name, object Type and object path presence on any web page and create in list form.
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2answers
39 views

Memory management for Immutable Objects

I have a conceptual doubt regarding the memory management of Immutable objects such as String Objects in java and other languages. For example, if I have a String object "str" holding the value ...
1
vote
0answers
5 views

How to provide in-place autocorrection in Solr?

Is possible in Solr to provide an in-place auto-correction? Like Goggle: If yes, then please tell me how? Is it a Solr configuration? or some extra hand-coded logic after I get Solr's ...

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