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• Arithmetic + and Bitwise OR

  - by Mohanavel

  Is there any difference between Arithmetic + and bitwise OR. For the below operation i used arithmetic operation, my friend told that this is wrong. In what way this is differing. uint a = 10; uint b = 20; uint arithmeticresult = a + b; uint bitwiseOR = a | b; Both the results are 30.

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• Understanding object models

  - by dan

  What is the importance of object models and can I have some examples?

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• Function point count given source code

  - by user354822

  Given the source code of a program, how do I analyze it and count the function points within it? Thanks!

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• Is it possible to Hide Text through a Style?

  - by Sandro

  I currently have a JTextPane that will be displaying text coming in from different streams. The way that the user can tell which stream the text came from is that the text from each stream has a different Style to it. Is there a way to make a Style that will hide the text so that I can filter out different pieces of text? Thank you.

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• pass reference of array lists to a function

  - by bhavna raghuvanshi

  I need to pass two array list references to a function and return the reference of merged array list. how can i do it???? pls help.... public int merge(ArrayList x, ArrayList y) { List all = new ArrayList(); all.addAll(x); all.addAll(y); System.out.println(all); return all; } is it correct???

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• Convert hexadecimal notation into latitudinal hours and minutes

  - by Dave Jarvis

  Given: 0x12E7 represents 48°39' 0x3026 represents 123°26' What is the most efficient way to convert the representation of those latitudes into two variables: hours minutes Where the first example would be: hours = 48 minutes = 39 And the second example: hours = 123 minutes = 26 Thank you!

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• Query in data population using select in jsp

  - by sarah

  I am populating data using <select name="test"> <option value='<%=session.getAttribute("tList")%>'><%=session.getAttribute("tList") %></option> </select> but the values are getting display in a single row in the combo box not row wise,where i am going wrong ?

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• Possible to skip track from an Android application?

  - by parse

  I'm planning on doing a application for Android 2.1 that changes song every minute (through what I hope exists in Android, "next") for the application using the audio device atm. So if I have Spotify running in background already, playing music, can I through my program change to the next track? Let me know if I was unclear about anything. Thanks in advance!

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• Smarter println that shows the depth in the stack

  - by Hectoret

  I am using System.out.println in my code to track the execution of a program and get some useful output. This creates results like this in the console: Main function. Program starts. Method getArea. Getting values Method getSide. Side is 6 Method getArea. First value is 6 Method getSide. Side is 8 Method getArea. Second value is 8 Method getArea. Area is 48 Main function. The final area is 48 I would like to create tha method, which adds a space in front of the output every time the code goes deeper in the method call stack. For example, the same code but instead of using System.out.println, now with Misc.smartPrintln: Main function. Program starts. Method getArea. Getting values Method getSide. Side is 6 Method getArea. First value is 6 Method getSide. Side is 8 Method getArea. Second value is 8 Method getArea. Area is 48 Main function. The final area is 48 The method would have this definition: public static void smartPrintln(String string); I don't know how to implement this functionality. Any ideas how to solve this? And, could the use of a logger offer this functionality?

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• How do i get a .wav sound to play ? [Android]

  - by Dan

  Im making an app, and i want it to make a sound when a activity is opened , the sound file is in R.raw.sound_file , if someone could do some example code to make my app play a sound that would be great :)

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• How to insert into data base using multi threading programming [closed]

  - by user1196650

  I am having a method and that method needs to do the following thing: It has to insert records into a database. No insert is done for the same table again. All inserts are into different tables. I need a multi threading logic which inserts the details into db using different threads. I am using oracle db and driver configuration and remaining stuff are perfect. Please help me with an efficient answer. Can anyone could provide me with a skeleton logic of the program.

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• how can this inner enum code be improved ?

  - by mafalda

  I have this construct public class Constants{ enum SystemA implements Marker{ ConstOne(1), ConstTwo(2), ConstThree(3); SystemA(int i) { number =i; } int number; } enum SystemB implements Marker{ ConstFour(4), ConstFive(5), ConstSix(6); SystemB(int i) { number =i; } int number; } } I have Marker so I can pass to method like this method(Constants.SystemA) or method(Constants.SystemB) What is the best way to list all the enum values ? I also want to make sure that it is not duplicating the number in any of the enums

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• GWT + XML documents with namespaces

  - by chris_l

  I'd like to get a quick overview of available solutions (libraries, ...) that allow me to work with XML documents with namespaces on a DOM level - in GWT's client side. Additionally, I'm looking for an XPath solution that can work on that DOM (even if it requires writing my own XPath Navigator). XML parsing and serialization isn't necessary on the client - this can be done on the server.

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• TestNG call sequence of @AfterMethod and ITestListener#onFailure

  - by sschuth

  Does anybody know what is called first if a test fails?

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• How to persist in order

  - by parhs

  I have two entities: EXAM and EXAM_NORMAL. EXAM @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private Long id; private String name; private String codeName; @Enumerated(EnumType.STRING) private ExamType examType; @ManyToOne private Category category; @OneToMany(mappedBy="id",cascade=CascadeType.PERSIST) @OrderBy("id") private List<Exam_Normal> exam_Normal; EXAM_NORMAL @Id private Long item; @Id @ManyToOne private Exam id; @Enumerated(EnumType.STRING) private Gender gender; private Integer age_month_from; private Integer age_month_to; The problem is that if I put a list of EXAM_NORMAL at an EXAM class if I try to persist(EXAM) I get an error because it tries to persist EXAM_NORMAL first but it cant because the primary key of EXAM is missing because it isn't persisted... Is there any way to define the order? Or should I set null the list, persist and then set the list again? thanks:)

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• Is it necessary to check all the field in equals method of model class as i am using JPA ?

  - by Urvish

  Is it necessary to check all the field in equals method of model class as i am using JPA ? please reply....

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• Allow Incorrect Package Name in Eclipse

  - by SamBeran

  I have some classes in my current project which have the wrong package declaration (they are in the wrong folder for their declared package.) Unfortunately, fixing the problem by moving the class is not an option. Is there a way I can get eclipse to ignore the error?

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• Random.nextInt(5) throws an IllegalArgumentException!!??

  - by Tom R

  I'm really not sure what else to say about this: Random r = new Random(); class SomeClass { public SomeClass(){ new SomeClass(r.nextInt(5)); } public SomeClass(int i){ ... Throws a NullPointerException where r.nextInt(5) is called. Any ideas?

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• struts annotation issue

  - by Gourav

  My issue is that i have an annotation in Struts2 action class like private String[] origfilenofrom; @FieldExpressionValidator(fieldName="origfilenofrom",key="",message="File Length should be 12 for old file format and 15 for new file format",expression="checkorigFileFormat(origfilenofrom)") now my mehtod is public boolean checkorigFileFormat(String[] files ) { for(int counter=0;counter<files.length;counter++) { int n=files[counter].length(); if(!(n==12 || n==15)) { return false; } } return true; } So for any string in that string [], which is returning false the value is bei false. No matter 3 strings in that string [] are true if one is false then the annotaion message is displayed for all. I want the message not to display where the string is true. Help please

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• get source jars from maven repository

  - by kux

  Hello, Does anyone have any ideea if you can find source jars on maven repositoryes?

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• Is it possible to draw simultaneously on a panel?

  - by swift

  I have to develop a whiteboard application in which both the local user and the remote user should be able to draw simultaneously, is this possible? If possible then any logic? I have already developed a code but in which i am not able to do this, when the remote user starts drawing the shape which i am drawing is being replaced by his shape and co-ordinates. This problem is only when both draw simultaneously. any idea guys?

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• How can I find out the system default currency symbol on BlackBerry?

  - by ageektrapped

  Is it possible to programmatically find the default currency symbol for the current locale in BlackBerry?

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• What can cause extremely slow 'merge' operations in Google app-engine (JPA)?

  - by Syavash

  I'm using JPA on Google app-engine datastore and some of the 'merge' operations are extremely slow. One of them usually takes more that 16 seconds. What can cause this?

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• Rotated image in ImageView

  - by Lars D

  I want to show an arrow that indicates the direction towards a goal, using the orientation sensor and current GPS position. Everything works well, except that I want to rotate the arrow image in my ImageView. The current code, which shows the arrow pointing upwards, is this: ImageViewArrow.setImageResource(R.drawable.arrow); What is the best solution for showing the arrow, rotated by N degrees?

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• Should my DAOs (Database Entities) Directly match my UI Objects?

  - by scarpacci

  I am trying to figure out best practice for N-Tier application design. When designing the objects my UI needs and those that will be persisted in the DB some of my colleagues are suggesting that the objects be one in the same. This doesn't not feel right to me and I am ultimately looking for some best practice documentation to help me in this decision. I honestly do not understand why I would want to design this way given that other applications may want to interact with my Data Access Layer....or it is just ignorance or lack of understanding on my part. Any documentation, information you could provide would be greatly appreciated. Just want to better understand these concepts and I am having a hard time finding some good information on the best practice for implementing these patterns (Or it is right in front of me on what I found and I didn't understand what was being outlined). Thanks, S

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