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• what is difference between JDK 1.4 and JDK1.6.

  - by Vipin Nemade

  hi friend, I have created the project using the JDK 1.4. Now I want to use JDK 1.6 version in my project. for this what steps are required.Means I want to know the what changes is require in code to get a JDK 1.6 feature.Basically I am talking about the features that is added in JDK 1.6. If any one list out that changes it is very helpful. Thanks in advance..............................

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• What is the difference between "a is b" and "id(a) == id(b)" in Python?

  - by bp

  The id() inbuilt function gives... an integer (or long integer) which is guaranteed to be unique and constant for this object during its lifetime. The is operator, instead, gives... object identity So why is it possible to have two objects that have the same id but return False to an is check? Here is an example: >>> class Test(): ... def test(): ... pass >>> a = Test() >>> b = Test() >>> id(a.test) == id(b.test) True >>> a.test is b.test False A more troubling example: (continuing the above) >>> b = a >>> b is a True >>> b.test is a.test False >>> a.test is a.test False

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• Is Memory increase create difference in output or behavior of java application?

  - by Nitz

  Hey Guys I have created one java-swing application. The application runs perfectly runs perfect on my pc. But it doesn't run perfectly on client pc. I had increase my Virtual Memory, earlier on my pc. So my question is.. Is changing memory limit, effect or change application behavior? Is there anything that change the behavior of java application? bcz same application runs perfectly on my pc and same application does not running perfectly on client pc? and there is no problem in code, i have checked three times.

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• Is there any difference between __DIR__ and dirname(__FILE__) in PHP?

  - by user198729

  It looks the same for me,but I'm not sure, because there are many projects that uses dirname(__FILE__).

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• Difference between the address space of parent process and its child process in Linux?

  - by abbas1707

  Hi, I am confused about it. I have read that when a child is created by a parent process, child gets a copy of its parent's address space. What it means here by copy? If i use code below, then it prints same addresses of variable 'a' which is on heap in all cases. i.e in case of child and parent. So what is happening here? #include <sys/types.h> #include <stdio.h> #include <unistd.h> #include <stdlib.h> int main () { pid_t pid; int *a = (int *)malloc(4); printf ("heap pointer %p\n", a); pid = fork(); if (pid < 0) { fprintf (stderr, "Fork Failed"); exit(-1); } else if (pid == 0) { printf ("Child\n"); printf ("in child heap pointer %p\n", a); } else { wait (NULL); printf ("Child Complete\n"); printf ("in parent heap pointer %p\n", a); exit(0); } }

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• What is the difference between "compile time" and "run time"?

  - by Surya sasidhar

  I do not understand what is meant by the terms "compile time" and "run time" (or "runtime"). I'm also a bit confused about what "value type" and "reference type" mean, and how they relate to the 'times mentioned above. Would someone please explain these things?

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• How can I set hibernate database config from outside config file?

  - by newbie

  I need to have hibernate database config set from outside text file, how can I do it? Is there some kind of method for this, or do I have to make my own?

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• How can I set Windows 7 to use both monitors when the computer is locked?

  - by Luie

  When I lock my Windows 7 machine with dual monitors, the "Ctrl+Alt+Del" screen is only on the main display, with the other display just showing a black screen. Is there any way to show either the desktop or other graphic on the secondary monitor while the computer is locked?

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• How can I set a connection time out manually?

  - by Daniel

  I use connect(socketfd, (struct sockaddr*)&remoteAddr, sizeof(remoteAddr)) to connect my iPhone to a computer (over WIFI) and it works fine so far. However if the computer is out of reach, my iPhone tries to establish a connection for more than a min. Is there a posibility to set the time manually out to a new value, e.g. 15 sec?

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• What is the difference between System.Drawing.Color and System.Windows.Media.Color?

  - by mos

  Basically, why the need for two abstractions of a pretty simple concept?

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• what is the difference and relationship of Interface ID, Implementations ID and DLL ID(UID3) ?

  - by Shadow.

  and why does Implementation ID necessary in ECOM? UID3 is not enough? thank you.

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• How do you programmatically set an attribute in Python?

  - by Nick

  Suppose I have a python object x and a string s, how do I set the attribute s on x? So: >>> x = SomeObject() >>> attr = 'myAttr' >>> # magic goes here >>> x.myAttr 'magic' What's the magic? The goal of this, incidentally, is to cache calls to x.__getattr__().

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• Difference between [object variable] and object.variable in Obj-C?

  - by John Smith

  I was working on a program today and hit this strange bug. I had a UIButton with an action assigned. The action was something like: -(void) someaction:(id) e { if ([e tag]==SOMETAG) { //dostuff } } What confuses me is that when I first wrote it, the if line was if (e.tag==SOMETAG) XCode refused to compile it, saying error: request for member 'tag' in 'e', which is of non-class type 'objc_object*' but I thought the two were equivalent. So under what circumstances are they not the same?

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• Is there an IDE for PHP where you can set breakpoints and step into the code?

  - by Chris_45

  Is there an IDE for PHP where you can set breakpoints and step into and render a webpage "stepwise"? And whats the "best" IDE for working with php-code?

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• Drupal 6: set pager_query() to display last page of query?

  - by Michael D

  Hi all, Does anyone here know how to set up a pager_query() to automatically go to the last page of the query when the page is displayed? I'm using theme_pager() to format the page.

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• From a Java programming perspective, what difference does multicast make to a networking program?

  - by pnut butter

  My manager has asked me to assess what changes would be required to add multicast support to a socket-based TCP/IP networking program that is part of a trading system. As far as I can tell, from the perspective of a Java program, it doesn't seem to matter too much whether the program is unicast or multicast. Doesn't the Java networking API make all of this transparent? By this I mean, wouldn't the change be a simple one of simply adding additional destinations for the outgoing connections?

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• How to set Background Image in HTML page in iphone.

  - by Rajendra Bhole

  Thanks in advance for sending answer to me........ Im the beginner in iphone development. I tried last 2 days to set background image in UIWebView in iphone.But i can't. Becoze i doesn't know how to take(proper path) of the image from of project directory and proper syntax of that.

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• How can I set an intent's class from a string value?

  - by twaxwei

  I am trying to set the class for an intent to the address listed in a string value, so that I can launch a given activity. The string is composed dynamically during runtime. Is there anyway to make something like the code below run: String target=com.test.activity1.class; Intent intent=new intent(); intent.setClass(this, target); Thanks

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• What is the difference between observable collections and innumberable ones?

  - by user281674

  What is an observable collection and how it is different than a innumerable collection?

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• How can I set the size of SWF-application in ActionScript project (Flex builder 3)?

  - by Raigomaru

  Silly question.. I need to set the size of SWF up to 800x600. But i don't know where can i change this property. There was an idea to change stage width and heigth, but nothing happened=(

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• In Objective C, is there a difference between if (object == nil) and if (nil == object)?

  - by Bill

  I would lean towards if (object == nil) but I've noticed in some tutorials the use of if (nil == object) Is this just a style thing, or is there some justified rationale for using either format?

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• how to set this div's style in the style tag..

  - by zjm1126

  <style type="text/css"> #[':0:adId']{/*this is not useful*/ background:red; } </style> <div id=":0:adId">Loading...</div> the google maps use this name, so how do i set the style. thanks

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• What is the difference between these usages: new SubElement() and SubElement()?

  - by pocoa

  Into a class constructor, I need to create some objects on the fly and add them to a vector. Here is my code: ContainerClass::ContainerClass() { for (int i = 0; i < limit; i++) elements.push_back(SubElement()); } Is this the same thing with new SubElement()? Do I still need to free those SubElement() objects into the ContainerClass destructor?

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• What is the difference between printf() and puts() in C?

  - by alex

  First up, I should let you know that I am learning C, so my apologies if this question seems stupid to a more advanced developer. I know you can print with printf() and puts(). I can also see that printf() allows you to embed variables inside and do some stuff like formatting. Is puts() merely a primitive version of printf(). Should it be used for every possible printf() without string interpolation? Thanks

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• How to map auto property private set with NHibernate?

  - by Michael Teper

  Suppose I have this class: public class GroceryListItem() { public GroceryList { get; private set; } public GroceryListItem(GroceryList groceryList) { GroceryList = groceryList; } } What is the NHibernate mapping file access strategy for this scenario? (i.e. <one-to-many name="GroceryList" column="XXX" access="?????" />)

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