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Search found 96 results on 4 pages for 'kunjaan'.

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• Count the number of objects in an Image

  - by kunjaan

  I am investigating the possibility of image processing to identify certain objects and also count them in an image. I will be given a picture and I need to identify the number of boxes present in that image. Does anybody have any experience with any Machine Vision/ Image Processing libraries like ImageJ, Fiji, JAI, jMagick ,Java Vision Toolkit? Which do you think is best suited for the job? What do you guys suggest? If the APIs can be used from Java, it would be better. Thank you. Edit: I am dealing with warehouse brown boxes. Yes I am talking about regular photos. The source is usually a mobile phone picture.

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• Find a common element within N arrays

  - by kunjaan

  If I have N arrays, what is the best(Time complexity. Space is not important) way to find the common elements. You could just find 1 element and stop. Edit: The elements are all Numbers. Edit: These are unsorted. Please do not sort and scan. This is not a homework problem. Somebody asked me this question a long time ago. He was using a hash to solve the problem. I was thinking if SO has solved similar problems.

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• Does ClojureBox support auto-align out of the box?

  - by kunjaan

  I am switching to Clojurebox to edit my clojure files. However I can't get the automatic alignment to work. I want the cursor to move two spaces after the line that I am editing when I hit return.

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• What is the difference between an Operator and Method?

  - by kunjaan

  What is the difference between an operator like '+' and an method '+' in terms of their compiled code?

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• How do I make defensive copy of an object?

  - by kunjaan

  How do I make defensive copies of a Mutable Object which contains a mutable field in an Immutable Object? class ImmutableObject { private final MutableObject immutable_field; ImmutableObject(MutableObject y) { this.immutable_field = y; } MutableObject return_immutable_field() { return immutable_field; } } class MutableObject { public int mutable_field; } The MutableObject does not have a constructor that lets me set the field. The MutableObject's current state should be captured in the Immutable Object and never changed.

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• Why would an Enum implement an Interface?

  - by kunjaan

  I just found out that Java allows enums to implement an interface. What would be a good use case for that?

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• How do I instantiate Class Dynamically in Java?

  - by kunjaan

  I have the class name stored in a property file. I know that the classes store will implement IDynamicLoad. How do I instantiate the class dynamically? Right now I have Properties foo = new Properties(); foo.load(new FileInputStream(new File("ClassName.properties"))); String class_name = foo.getProperty("class","DefaultClass"); //IDynamicLoad newClass = Class.forName(class_name).newInstance(); Does the newInstance only load compiled .class files? How do I load a Java Class that is not compiled?

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• Why do we need break after case statements?

  - by kunjaan

  Why doesn't the compiler automatically put break statements after each code block in the switch? Is it for historical reasons? When would you want multiple code blocks to execute?

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• How do I print the method body reflectively?

  - by kunjaan

  Right now I have private static void getMethods(Class<? extends Object> clazz) { Method[] declaredMethods = clazz.getDeclaredMethods(); for (Method aMethod : declaredMethods) { aMethod.setAccessible(true); // Print the declaration System.out.print(Modifier.toString(aMethod.getModifiers()) + " " + aMethod.getReturnType().getSimpleName() + " " + aMethod.getName()); // Get Parameter Types getParameters(aMethod); //Empty Body System.out.println("{}\n"); } } Which prints most information reflectively but creates an empty body. How do I add to the reflective nature of Java to print the method body?

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• What is null in Java?

  - by kunjaan

  What is null? Is null an instance of anything? What set does 'null' belong to? How is it represented in the memory?

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• Can I disassemble my code in PLTScheme?

  - by kunjaan

  Can I see the translated machine instruction of a scheme function like (disassemble) in LISP?

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• Third Party Libraries and Technologies every Java Programmer must be aware of?

  - by kunjaan

  I agree that this is a very subjective question but as a student of Java , I get suggested good libraries and technologies for Java by my mentors at work. For example, I was not aware of Google Guice for Dependency Injection, awesomeness of Java Reflection APIs, ORMs like Hibernate or stuffs you could do with libraries like Hadoop. I want to collect and share some of the libraries that exemplifies good java programming (so that beginners like me could code walk and emulate the coding practice), teach unique concepts to Java (for example Dependency Injections or ORM) and/or are really interesting libraries that a student like me would get to do interesting projects on (eg. Hadoop). I redited this question 3 times to make it more specific : ). I am sorry if I am really not clear in my intentions. But some kind of a list of good concepts and third party libraries for Java could really help some of my intern friends here at work. Thank you.

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• How do I restrict accepting only one type in my generic method?

  - by kunjaan

  I have a generic function foo, which accepts any type and prints them out. public static <T> T foo(T... arg) { List<T> foo = Arrays.asList(arg); for (T t : foo) { System.out.println(t); } return null; } How do I make sure that the arguments received are of only 1 type. For example, {1,'a',3} should be invalid. It should either be all numbers or all characters.

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• Access the parameter type of a method reflectively

  - by kunjaan

  I have this but it always returns null private static String getParameters(Method aMethod) { Class<?>[] parameterTypes = aMethod.getParameterTypes(); for (Class<?> aParam : parameterTypes) { System.out.print(aParam.getName()); } return null; }

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• Programming Interview Preparation Book

  - by kunjaan

  Which programming book prepared you the most of interview questions? My friend recommended these: Interview Questions Exposed Career Cup's Book What does this community recommend for someone preparing for an entry level software development/ internship interview questions?

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• How do I iterate over an Array field reflectively?

  - by kunjaan

  I have Class<? extends Object> class1 = obj.getClass(); Field[] fields = class1.getDeclaredFields(); for (Field aField : fields) { aField.setAccessible(true); if (!Modifier.isStatic(aField.getModifiers()) && Modifier.isPublic((aField.getModifiers()))) { if (aField.getType().isArray()) { for (?? vals : aField) { System.out.println(vals); } } } }

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• What are the things that optimize speed declaration do in CL?

  - by kunjaan

  What are some of the optimization steps that this command does `(optimize speed (safety 0))` Can I handcode some of these techniques in my Lisp/Scheme program?

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• How do you compare two strings and ignore the case in Scheme?

  - by kunjaan

  I want to write a function like equalp, which gives #t for (equalp "Xy" "xY").

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• How do I add an attribute using XSLT?

  - by kunjaan

  I have an xml like this: <person name="foo" gender = "male" /> I want to transform it to <person id="foo" gender="male" /> Is there a way to do that using XSLT?

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• How can I add to List<? extends Number> data structures?

  - by kunjaan

  I have a List which is declared like this : List<? extends Number> foo3 = new ArrayList<Integer>(); I tried to add 3 to foo3. However I get an error message like this: The method add(capture#1-of ? extends Number) in the type List<capture#1-of ? extends Number> is not applicable for the arguments (ExtendsNumber)

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• How do you detect if a list has exactly 3 items in Haskell?

  - by kunjaan

  I have this but I got an error: -- test if a list containts exactly three characters test :: [Char] -> Bool test xs | [_ , _ , _] = True | otherwise = False

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