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JAVA QUESTIONS

How to prevent changing the value of variable
How to prevent changing the value of variable
Hope that helps Array is passed by reference in Java. If you pass the original array to the constructor of Person, you are passing the reference to the original array. So any change in arrayTest inside Person instance will reflect in original array(i
TAG : java
Date : November 09 2020, 07:01 PM , By : story _0
Is there a name for my sorting algorithm?
Is there a name for my sorting algorithm?
wish help you to fix your issue This appears to be a modified selection sort, as pointed out by maraca and Srini.See, for example, this animation page. Bubble Sort (with a given array/list length) takes longer or shorter depending on whether the arra
TAG : java
Date : November 09 2020, 07:01 PM , By : Emre
I need multiple inheritance but I'm using Java
I need multiple inheritance but I'm using Java
wish of those help You have to reconsider the design and favor composition over inheritance. A simple rule - how to identify if you should use one or another: does the inheritance answer the question "is-a" or "has-a"?Is Customer and Account? No. Cus
TAG : java
Date : November 09 2020, 07:01 PM , By : Alessandro Magi
Using Iterator - java.util.ConcurrentModificationException
Using Iterator - java.util.ConcurrentModificationException
hop of those help? This can happen if you modify the collection between two calls to the method. For example:
TAG : java
Date : November 09 2020, 07:01 PM , By : Ahmed Yusuf Abdalla
How to replace all characters in a String except certain character?
How to replace all characters in a String except certain character?
this will help Now here I am getting an output as 1c1g1, but what I want is 11c111g111111111111111111
TAG : java
Date : November 09 2020, 07:01 PM , By : Brandon Harrington
fuzzy implementation for capturing specific strings
fuzzy implementation for capturing specific strings
wish helps you I am going to develop a web crawler using java to capture hotel room prices from hotel websites. , There are two ways to approach this problem:
TAG : java
Date : November 09 2020, 07:01 PM , By : Dipesh Panchal
Passing data types from Java to C (or vice versa) using JNI
Passing data types from Java to C (or vice versa) using JNI
This might help you If you're going to be doing this with a lot of objects, something like Swig would be best. You could use jobject type to pass around custom objects. The syntax isn't nice, perhaps there is a better way to write this.Example Employ
TAG : java
Date : November 09 2020, 07:01 PM , By : user3858160
Java equals and hashmaps problem
Java equals and hashmaps problem
Hope that helps equals is a method you use to discover if two given objects are the same. The default implementation of equals for an object is: They are the same if they have the exact same reference.Sometimes, you don't want this. Say you have a Co
TAG : java
Date : November 09 2020, 07:01 PM , By : Aurelien
Java HashSet key/value pair
Java HashSet key/value pair
may help you . HashSet doesn't have key/value pairs. It is a Set of objects and you would use an implementer of Set to ensure that a collection of objects contained no duplicates.Implementers of Map like HashMap have key/value pairs and provide a get
TAG : java
Date : November 09 2020, 07:01 PM , By : nightnighty
Getting PageRank
Getting PageRank
Hope this helps How can I retrieve pagerank of any page indexed by google? Has Google any API or page for this? , You can get the PageRank by using an HTTP request:
TAG : java
Date : November 09 2020, 07:01 PM , By : user3858115
JDBC resultset close
JDBC resultset close
may help you . This performance is JDBC driver specific. The C3P0 connection pool should not have any influence on it. I would suggest to retest it with a newer or another JDBC driver. An alternative to the Sybase driver is the jTDS driver. I am not
TAG : java
Date : November 09 2020, 07:01 PM , By : XOR
Is a switch statement the fastest way to implement operator interpretation in Java
Is a switch statement the fastest way to implement operator interpretation in Java
this will help EDIT:Okay, since you have to use JDK 1.4, my original answer is a no-go (left below for reference). I would guess that the switch is not as fast as the abstract class-based solution when you're just looking at the apply(which,a,b) vs w
TAG : java
Date : November 09 2020, 07:01 PM , By : Manpreet Singh
Hibernate - filtering by associated property
Hibernate - filtering by associated property
around this issue I have an ExamResult class which has a link back to it's parent Exam. , The problem is that the in your ExamResult mapping should be:
TAG : java
Date : November 09 2020, 07:01 PM , By : Kirill Chebakov
What is the correct way to handle object which is instance of class in apache.xerces?
What is the correct way to handle object which is instance of class in apache.xerces?
may help you . Because the XSD had an 'any', JAX-B is mapping that piece of XML to the DOM. You should be casting to 'Element', not 'ElementNSImpl'. Then you have to use the DOM API, possibly with the assistance of XPath, to pull the data.If JAXB is
TAG : java
Date : November 09 2020, 07:01 PM , By : Shannon Chen
How to sort datatable using richfaces
How to sort datatable using richfaces
should help you out I am trying to sort datatable using richfaces. cab anyone help me out in this.
TAG : java
Date : November 09 2020, 07:01 PM , By : user3857975
struts2 trim all string obtained from forms
struts2 trim all string obtained from forms
I hope this helps . You will find the answer in the code of the StrutsTypeConverter class. Basically, at this level the type converter framework does not know anything about whether the data is coming "from" or "to" the user, it merely knows it is co
TAG : java
Date : November 09 2020, 07:01 PM , By : user3857931
Java EE 6 vs. Spring 3 stack
Java EE 6 vs. Spring 3 stack
To fix this issue I'm starting a new project now. I have to choose technologies. I need something light, so no EJB or Seam. On the other hand I need JPA (Hibernate or alternative) and JSF with IceFaces. , I need something light, so no EJB or Seam.
TAG : java
Date : November 09 2020, 07:01 PM , By : user26067
Java: How to parse XML comments using org.apache.xerces.parsers.SAXParser?
Java: How to parse XML comments using org.apache.xerces.parsers.SAXParser?
like below fixes the issue You need to implement a LexicalHandler.
TAG : java
Date : November 09 2020, 07:01 PM , By : Beverly Labueng
Help: 8 X 10 2-dimensional array of buttons in android
Help: 8 X 10 2-dimensional array of buttons in android
hope this fix your issue i am stuck with a problem creating buttons dynamically in android. This is what i want to do- , You need a container to place them all in:
TAG : java
Date : November 09 2020, 07:01 PM , By : user3857878
How to import .class file in a .java file?
How to import .class file in a .java file?
this will help You can add a folder containing compiled classes to your project by right clicking the project, then select Properties > Java build path, then "Add External Class Folder"Or choose "Add Class Folder" if you have copied the class files i
TAG : java
Date : November 09 2020, 07:01 PM , By : user13423
Difference between Jar, Fat Jar, Executable Jar
Difference between Jar, Fat Jar, Executable Jar
wish of those help They're just ways of packaging the java apps. Skinny – Contains ONLY the bits you literally type into your code editor, and NOTHING else.
TAG : java
Date : November 08 2020, 07:01 PM , By : vj ramone
Making a Button
Making a Button
seems to work fine To have the custom appearance you need, it's better that your custom button extends JLabel. Below code demonstrates how we can write a custom button by extending JLabel.This button supports click events. We can add ActionListeners
TAG : java
Date : November 08 2020, 07:01 PM , By : pellis
Calculate GPA for a student
Calculate GPA for a student
hop of those help? For each iteration through the array, add the value of the letter to the sum, and then divide the sum by the size of the array.
TAG : java
Date : November 08 2020, 07:01 PM , By : Tiago
Downloading You tube videos?
Downloading You tube videos?
I wish this helpful for you Youtube API allows you to search list videos and obtain the mediaplayer URL, so that you can play videos within your web pageYoutube Data API
TAG : java
Date : November 08 2020, 07:01 PM , By : srasquasz
Java application installer for linux
Java application installer for linux
will be helpful for those in need I recommend you to have a look at IzPack. IzPack is a one-stop solution for packaging, distributing and deploying applications.It is fully cross-platform and generates a single installer. As such, it is an alternativ
TAG : java
Date : November 08 2020, 07:01 PM , By : user3857854
Connecting to MS sql through hibernate
Connecting to MS sql through hibernate
should help you out As mentioned by Pascal Thivent, use any one driver. In case of JTDS, use the following configuration.
TAG : java
Date : November 08 2020, 07:01 PM , By : f0restw0w
Memory leak of java.lang.ref.WeakReference objects inside JDK classes
Memory leak of java.lang.ref.WeakReference objects inside JDK classes
wish help you to fix your issue Fixed in 1.6.0_29: http://www.oracle.com/technetwork/java/javase/6u29-relnotes-507960.html?ssSourceSiteId=ocomen1.6.0_29 is not mentioned on the bug page itself ( http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6942
TAG : java
Date : November 08 2020, 07:01 PM , By : Saikat
What should the Java main method be for a standalone application (for Spring JMS)?
What should the Java main method be for a standalone application (for Spring JMS)?
I wish this helpful for you When using Spring JMS you already use components/beans in your configuration that get auto-started and will stay alive (subscribe and read from queue/topic) until you stop the application.To start and keep the application
TAG : java
Date : November 08 2020, 07:01 PM , By : Bruno
What is the best way to implement a big (1GB or more) file uploader website in PHP or Java?
What is the best way to implement a big (1GB or more) file uploader website in PHP or Java?
seems to work fine It would be unwise to open the file on the client side, read its whole content to memory, close it and then start sending the contents, precisely because the contents can exceed the available memory.One alternative is to open the f
TAG : java
Date : November 08 2020, 07:01 PM , By : Sai Surya Kiran
Where to get streaming (live) video and audio from camera example app for Android?
Where to get streaming (live) video and audio from camera example app for Android?
seems to work fine Ole have you been able to find any good examples of video or audio broadcasting yet? The best that I have found so far is the SIPDroid project (www.sipdroid.org). I haven't had a chance to review it in depth, but it looks promising
TAG : java
Date : November 08 2020, 07:01 PM , By : Ferry Fernando
How to refresh external Jars in Eclipse project (Java)?
How to refresh external Jars in Eclipse project (Java)?
it should still fix some issue Try right click on the project and select refresh. If that does not work, go to the Project menu, clean, and check your project.
TAG : java
Date : November 08 2020, 07:01 PM , By : Hariharan
Eclipse: Should I create a workspace for each project?
Eclipse: Should I create a workspace for each project?
I hope this helps you . I create Eclipse workspaces around products, because for me, a product can have multiple projects within them, for example like having core libraries compiled into one jar in a project, this is used by other projects.In terms
TAG : java
Date : November 08 2020, 07:01 PM , By : Nicola Calore
Swing & Batik: Create an ImageIcon from an SVG file?
Swing & Batik: Create an ImageIcon from an SVG file?
it fixes the issue It's really quite easy, just not very intuitive.You need to extend ImageTranscoder. In the createImage method you allocate a BufferedImage, cache it as a member variable, and return it. The writeImage method is empty. And you'll ne
TAG : java
Date : November 08 2020, 07:01 PM , By : user3857687
How to use BigDecimal in swing GUIs?
How to use BigDecimal in swing GUIs?
I wish this helpful for you I hate to necro these really old threads on stuff, but my understanding is StackOverflow cries inside every day an answer remains unsolved.so you can checkout the code here: http://www.java2s.com/Code/Java/Swing-JFC/ABigDe
TAG : java
Date : November 08 2020, 07:01 PM , By : Isaac Reinaldo
Is there a library for Java Conceptual Graph Visualization?
Is there a library for Java Conceptual Graph Visualization?
this will help jgraphAbuGraph
TAG : java
Date : November 08 2020, 07:01 PM , By : Rahul Vagadiya
Headless java servlet?
Headless java servlet?
this one helps. Servlets are a generic mechanism that are not specifically tied to the HTTP world (despites the fact that HttpServlets are used in 99.999% of cases). You could subclass the Servlet class to implement, say, a MailServlet that would res
TAG : java
Date : November 08 2020, 07:01 PM , By : user3857637
How can you edit a word document with Java
How can you edit a word document with Java
I wish this helpful for you Take a look at http://poi.apache.org/
TAG : java
Date : November 08 2020, 07:01 PM , By : Agamy
how to insert image into word document using java
how to insert image into word document using java
Does that help http://dev.plutext.org/trac/docx4j/browser/trunk/docx4j/src/main/java/org/docx4j/samples/AddImage.java
TAG : java
Date : November 08 2020, 07:01 PM , By : CubeAnimation
getResourceAsStream not loading resource
getResourceAsStream not loading resource
will be helpful for those in need Are you loading it from the root dir and you need "/hibernate.cfg.xml" instead of just hibernate.cfg.xml?
TAG : java
Date : November 08 2020, 07:01 PM , By : Imad Kharbutli
Is there a fast concat method for linked list in Java?
Is there a fast concat method for linked list in Java?
will be helpful for those in need If you are willing to settle for Iterable result, you can use google-collections Iterables.concat and Iterables.reverse http://google-collections.googlecode.com/svn/trunk/javadoc/com/google/common/collect/Iterables.h
TAG : java
Date : November 08 2020, 07:01 PM , By : Vamsi Krishna K S
Using RecordStore in Java J2ME
Using RecordStore in Java J2ME
I think the issue was by ths following , I am currently doing some J2ME development. I am having a problem in that a user can add and remove elements to the record store, and if a record gets deleted, then that record is left empty and the others don
TAG : java
Date : November 08 2020, 07:01 PM , By : Vincenzo Campanella
regex to escape non-html tags' angle brackets
regex to escape non-html tags' angle brackets
should help you out I would suggest you to use Html CleanerIf you look at the HomePage the example shows exactly how text is escaped.
TAG : java
Date : November 08 2020, 07:01 PM , By : Emmanuelle John Bele
Why is the setContextClassLoader() method placed on Thread?
Why is the setContextClassLoader() method placed on Thread?
I wish did fix the issue. The Context class loader is the class loader that the thread will use to find classes. You primarily care about this when you are writing an application server or something similar. The idea is that you can start a thread fr
TAG : java
Date : November 08 2020, 07:01 PM , By : user3857573
Jboss Messaging JMS
Jboss Messaging JMS
this will help Standard JMS API steps:1. Create a javax.naming.Context with the access details of the server
TAG : java
Date : November 08 2020, 07:01 PM , By : Kristian Smith
Print all text in-between two characters
Print all text in-between two characters
hope this fix your issue You have to take advantage of Java's split() method, which accepts a specified string of text to use as separators/delimiters to words, which are often commas, like in .csv files. I'm going to skip the part about reading the
TAG : java
Date : November 07 2020, 07:01 PM , By : Олеся Савицкая
From date string to utc long in java 8
From date string to utc long in java 8
Hope this helps I am working with java 8. I receive a date string such as "2019-01-01" and I have to translate this into an UTC long. I cannot convert it into a date first, because it is converted to the local timezone. , Is this what you were lookin
TAG : java
Date : November 07 2020, 07:01 PM , By : Y.H
how to execute static block after main method in java?
how to execute static block after main method in java?
like below fixes the issue Is there any way to first "execute" main method and then static blk
TAG : java
Date : November 07 2020, 07:01 PM , By : Allan Moraes de Oliv
How to roll the log file on startup in logback
How to roll the log file on startup in logback
seems to work fine None of the other suggestions was appropriate for my situation. I didn't want to use a size-and-time-based solution, because it requires configuring a MaxFileSize, and we are using a strictly time-based policy. Here is how I accomp
TAG : java
Date : November 07 2020, 07:01 PM , By : dizzyzane
401 Unauthorized in Tomcat
401 Unauthorized in Tomcat
it fixes the issue I discovered today that if you have a syntax error in your tomcat-users.xml file, the Manager app will start up but you won't be able to login. Make sure that all of your XML tags are closed properly and that you don't have any typ
TAG : java
Date : November 07 2020, 07:01 PM , By : Advisor
Can a Java Object be passed from Java Script to Applet
Can a Java Object be passed from Java Script to Applet
should help you out No, you can't. Javascript can't make a java Object, since a java Object can only exist inside a JVM. Javascript doesn't run in a JVM. But javascript code can pass parameters (typically strings) to an applet, and you can call metho
TAG : java
Date : November 07 2020, 07:01 PM , By : user312042
Create on the fly web service, Dynamic web service invoker
Create on the fly web service, Dynamic web service invoker
I wish this helpful for you See JAX-RPC; what you need is Dynamic proxies or Dynamic Invocation Interface (DII) if client doesn't know the remote method name or its signature.Here a good example of what you can do with JAX-RPC having just a WSDL as i
TAG : java
Date : November 07 2020, 07:01 PM , By : rubfan
android bluetooth discovery: ACTION_FOUND happening after ACTION_DISCOVERY_FINISHED
android bluetooth discovery: ACTION_FOUND happening after ACTION_DISCOVERY_FINISHED
Hope that helps Simply because the discovery task has a timeout to prevent endless searched. So, in case there is no available device around, you'll get your "No Devices found"...
TAG : java
Date : November 07 2020, 07:01 PM , By : Zoe
How to test internet speed (JavaSE)?
How to test internet speed (JavaSE)?
hop of those help? Look here on howto ping in java:http://blog.taragana.com/index.php/archive/how-to-do-icmp-ping-in-java-jdk-15-and-above/
TAG : java
Date : November 07 2020, 07:01 PM , By : faryadi
Database migration pattern for Java?
Database migration pattern for Java?
seems to work fine Have a look at liquibase.Here's an ibm developerworks article that has a nice walk-thru http://www.ibm.com/developerworks/java/library/j-ap08058/index.html
TAG : java
Date : November 07 2020, 07:01 PM , By : user3857298
Reasons for using on-the-fly compilation in Java
Reasons for using on-the-fly compilation in Java
like below fixes the issue Runtime compilation does add quite a bit of overhead - the compilation step is (somewhat) slow.It does, however, add a huge amount of flexibility. By compiling new code for each run of an application, you allow the applicat
TAG : java
Date : November 07 2020, 07:01 PM , By : user3857287
Generic arrays of parametrized ArrayLists in java?
Generic arrays of parametrized ArrayLists in java?
wish helps you The reason you have to do that is because generics don't really exist in Java. It's actually a compiler hack.As for the two lines you posted, there shouldn't be any difference in terms of the bytecode produced. However, in the first ca
TAG : java
Date : November 07 2020, 07:01 PM , By : Sharrem Helaan
Exception with Freetts when using kevin or mbrola
Exception with Freetts when using kevin or mbrola
this one helps. It seems that "To enable FreeTTS support for MBROLA, merely copy mbrola/mbrola.jar to lib/mbrola.jar. Then, whenever you run any FreeTTS application, specify the "mbrola.base" directory as a system property:
TAG : java
Date : November 07 2020, 07:01 PM , By : user3857224
Java - Method Invocation & Execution
Java - Method Invocation & Execution
Hope that helps I don't think these are standard terms. However I understand them the following way: invocation is the event of issuing the call to the method; technically - placing the method onto the stack execution is the whole process of running
TAG : java
Date : November 07 2020, 07:01 PM , By : Abrar Ahmed Abulhasa
How do I get the dependency for POI API?
How do I get the dependency for POI API?
it helps some times Looking into Apache POI components map
TAG : java
Date : November 06 2020, 07:00 PM , By : pulkit Srivastava
How to get specific word in a string in Java
How to get specific word in a string in Java
around this issue You can do it in different manner.One of the simplest in this case is split the string and getting the fifth and ninth element
TAG : java
Date : November 06 2020, 07:00 PM , By : tron2009

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