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• Java Log ==> JTextArea

  - by asmo

  Need: Output a Java application's log into a GUI component, such as a JTextArea. Concern: Need to log things from any class, in a static manner. However, the GUI logger component must not be static (obviously) as it's the member of a parent component. What should I do?

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• How know a variable type in java?

  - by Miguel Ribeiro

  Hi. I wanted a thing like I declare a variable: String a = "test"; And want to know what type it is, i.e., the output should be java.lang.String thanks in advance

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• Implementing parallel coordinates for multi dimensional data in Java

  - by Algorist

  Hi, I am planning to implement parallel coordinates in java using JOGL library. Do you have any other suggestions? Thank you Bala

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• Converting a String to Color in Java

  - by devoured elysium

  In .NET you can achieve something like this: Color yellowColor = Color.FromName("yellow"); Is there a way of doing this in Java without having to resort to reflection? PS: I am not asking for alternative ways of storing/loading colors. I just want to know wherever it is possible to do this or not.

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• .NET Attributes versus Java Annotations: Which Came First?

  - by Tom Tresansky

  I'm a .NET developer learning Java EE. These two concepts seem to serve the same exact purposes in either system. So which framework gets credit for inventing them?

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• Are there any good books to learn C++ if you already know Java and C#

  - by JF LR

  Hi, I would like to know if you have any good books that teach C++ programming without repeating basic stuff. In fact, I already well know Java and C#. I also have a basic knowledge in C and assembly, so I understand a little bit pointer arithmetic, manual memory management and heap based allocation. I was looking at O'Reilly's C++ in a Nutshell and was also wondering if this book would be a good choice. Thank you

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• Performance Wise, Python VS JAVA For File Based Processing

  - by silent

  Hi all, I need to create daemon that will monitor certain directory and will process every file that's written to that particular path. My choice is either java or python. Did you guys have any experience using both technology? what is the best one?

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• What are the Java equivalents to Linq and Entity Framework

  - by Colin Desmond

  Having played with Linq (to SQL and Objects) as well as the Entity Framework from Microsoft recently, I was wondering what the non-.Net (specifically Java) equivalents are?

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• Is the stack garbage collected in Java?

  - by girinie

  The heap memory is garbage collected in Java. Is the stack garbage collected as well? How is stack memory reclaimed?

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• How to prompt a streamed file for downloading in Java / Tomcat

  - by Clem

  Hello, I'm creating a java web application runing on a Tomcat server. One of the functions fill in a StringBuffer variable with data. At the end, I would like to propose the user to download the generated content packaged in a text file. This without having to store the file on the server. I've been searching for a code snippet but couldn't find anything corresponding ... I hope I've been clear enough on my problem. Thanks in advance,

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• Protected members in a superclass inaccessible by indirect subclass in Java

  - by MSumulong

  Why is it that in Java, a superclass' protected members are inaccessible by an indirect subclass in a different package? I know that a direct subclass in a different package can access the superclass' protected members. I thought any subclass can access its inherited protected members.

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• Tool for analyzing java core dump

  - by margus

  If i make java core dump with gcore then what is the best tool to analyze it? I need to be able make jmap, jstack, jstat etc and also i need to see values of all variables. Something that can take core dump as frozen JVM.

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• How to make java-application standalone?

  - by elr

  I have to burn a java-application on a cd. This application have to run on every windows pc wihtout any installation (also jre shouldn't be installed) before.

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• Overload the equals method in java

  - by fastcodejava

  Does anyone overload the equals method in java? The overloaded method will be public boolean equals(final MyClass myClass) This will have the benefit of having the relevant comparison part (guts of the method) in another method. Details are in this blog.

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• 3d model viewer in Flash or Java

  - by Magnetic_dud

  I want to show a box in 3d on my website, and I was thinking to do it in Flash. How I can show a 3d model? I need something very simple, it's a textured cube, no interaction required, just let the user pan and zoom. There is a 3ds viewer in flash or something like that? Java is also ok (but flash is preferred)

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• DB2 AS400 Java function always returns same value

  - by Nimrod Shory

  Hello, I am writing a user defined function to DB2 on AS/400 in Java and the strangest thing happen.. I am always getting the same result from the function even when i am changing it, even if i am dropping it and create it again and even when i specify NOT DETERMINISTIC.. Does any one have ever encountered a behavior like that?

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• Java. Best procedure to de-serialize a Java generic object?

  - by Jake

  What is the best procedure for storing and retrieving, using native Java serialization, generic objects like ArrayList<String>? Edit: To clarify. When I serialize an object of type ArrayList<String> I'd like to de-serialize to the same type of object. However, I know of no way to cast back to this generic object without causing warnings.

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• Java: Finding objects in collections.

  - by Jake

  This problem occurs over and over. I have some complicated object, such as a Cat, which has many properties, such as age, favorite cat food, and so forth. A bunch of Cats are stored in a Java Collection, and I need to find all the Cats that are aged 3, or those whose favorite cat food is Whiskas. Surely, I can write a custom method that finds those Cats with a specific property, but this gets cumbersome with many properties; is there some generic way of doing this?

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• 3D Animation in Java/J2ME?

  - by Praveen Chandrasekaran

  how to do the 3D Animation in java? what are the packages to be needed? i am very newbie about this topic. Sample Code, Tutorials and articles are more thankful. Tell me how i have to start please? NOTE: its for Mobile Appication.

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• How to convince management that reformatting entire java code base is safe

  - by jtsampson

  How would one go about proving to management that a batch reformat of all .java files in a large code base (to place the code in compliance with the company's coding standards) is safe and will not affect functionality. The answers would have to appease the non-technical and the technical alike.

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• ruby thread programming , ruby equivalent of java wait/notify/notifyAll

  - by Geo

  I would like to know what are ruby's alternatives to the Java methods : wait notify notifyAll Could you please post a small snippet or some links ?

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• Get query from java.sql.PreparedStatement

  - by llm

  In my code I am using java.sql.PreparedStatement. I then execute the setString() method to populate the wildcards of the prepared statement. Is there a way for me to retrieve (and print out) the final query before the executeQuery() method is called and the query is executed? I Just want this for debugging purposes. Thanks.

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• Finding Last Fired time using a Cron Expression in Java

  - by a-sak

  Is there a way in Java to find the "Last Fired Time" from a Cron Expression. E.g. If now = 25-Apr-2010 10pm, cron expression "0 15 10 ? * *" (quartz) should return me 25-Apr-2010 10:15am I do not care if we use standard cron expressions (like Unix and Quartz) or less popular ones if they can fetch me the correct "Last Fired Time"

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• Passing data types from Java to C (or vice versa) using JNI

  - by user277460

  Using JNI can we pass custom data types from Java to C (or vice versa)? I see a mapping of primitive datatypes to types in C however not too sure if we can send across our own data types (e.g. Send across or return an Employee object or something!).

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• add more than 30 days with Calendar's add() method in Java

  - by Haes

  Hi, I'm not quite sure what field to use when adding more than 30 days to a Java Calendar object. Is there any difference in between Calendar.DAY_OF_MONTH and Calendar.DAY_OF_YEAR? Example: GregorianCalendar d = new GregorianCalendar(); d.add(Calendar.DAY_OF_YEAR, 90); vs GregorianCalendar d = new GregorianCalendar(); d.add(Calendar.DAY_OF_MONTH, 90); Thanks.

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