Browse questions answered by Jon Skeet

how to save/write special character in XML?

I want to save/write the xml that time I cant save/write the special character in XML file using JDOM. When I am trying to save this type of character it give me ?? masrks instead...

Your question is unclear, but I suspect this may be the problem - it's at least a problem: xmlOutput.output(document, new FileWriter(path)); FileWriter always uses the platform default encoding, whereas your XML document claims to be in... more 11/25/2013 8:05:56 AM

Android : Error SimpleDateFormat Unknown pattern character 'u'

I use java 1.7.25 but found this error. what should I do? FATAL EXCEPTION: main java.lang.IllegalArgumentException: Unknown pattern character 'u' at...

I use java 1.7.25 No, you don't - not if you're running on Android. You need to look at the Android documentation, not the Java 7 docs. If you look at the Android SimpleDateFormat documentation you'll see that u isn't listed there. I... more 11/24/2013 5:12:13 PM

What is IllegalStateException?

I am trying to use the following Fastload API connection ... etc is perfect. I know exactly where it fails ........... System.out.println(" Streaming " + dataFile); ...

Usually, IllegalStateException is used to indicate that "a method has been invoked at an illegal or inappropriate time." However, this doesn't look like a particularly typical use of it. The code you've linked to shows that it can be... more 11/23/2013 11:24:47 PM

Why does FileInputReader.read() only reads 5 bytes at a time (Java)?

OK, so I've been trying to read a ("any") binary file to a byte[] array using FileInputReader.read()...But no matter the file length it only reads 5 bytes at a time... (btw im...

It sounds like your array length isn't actually 1024. I know you've shown code creating it with 1024 bytes, but I suspect your actual code either changes the value somewhere else, or that it's created in a different way. It would be... more 11/23/2013 1:16:09 PM

encodings different result between codePointCount and length

I found one tricky place and couldn't find any answer why this exactly happen. The main problem is how long is string. Whether it contains one or two character. Code: public...

Whether it contains one or two character. It contains one Unicode character, which is comprised of 2 UTF-16 code units. Every char in Java is a UTF-16 code unit... it may not be a whole character. Each character has a single code... more 11/23/2013 12:33:18 PM

reading Xml file on android

I'm trying to read a Xml file with 120 items like this. <?xml version="1.0" encoding="utf-8"?> <books> <Book> <bookName >Libro...

Book isn't an attribute - it's an element (a tag). You should use: if (x.getName().equals("Book")) to check whether you're on the Book element. However, that won't really help you much, as you're actually after the bookName, bookSection... more 11/23/2013 8:58:36 AM

Java project returning null values

Hi I am new to Java programming. Why are my values returning null after I enter them on the input dialog. I have two classes, one called VehicleApp and the other called...

You haven't really described the problem, but I suspect this is the cause: VehicleFactory vehicleObject = new VehicleFactory(); vehicleObject.getSummary(); vehicleObject.HayloFactory(firstname, lastname, phone, nbrVehicles,... more 11/23/2013 8:17:07 AM

Select() method not found in BindingList<T>, System.Linq is included

I have the following BindingList derived class. class MyBindingList<T> : BindingList<T> where T: class { public T GetRecord(T obj) { return base.Where(t...

The problem is the way in which you're calling the extension method. You just need to use this instead of base. Calling extension methods on this is relatively unusual, but does need the this explicitly... and it can't be base, which... more 11/22/2013 3:10:34 PM

Parse exact custom time format?

I can't seem to get the custom format right for my TimeSpan.ParseExact(): Time samples to be expected: 1:23:45.6 23:45.6 23:45 1:23:45 The string format I'm using: string...

I'm not aware of the ability to specify optional parts like that in a custom format string. I suggest you use multiple format strings, and use the overload of TimeSpan.ParseExact that takes an array of formats. string[] formats = {... more 11/21/2013 2:37:40 PM

Why does this anonymous type not deserialize properly using JsonConvert.DeserializeAnonymousType?

I have the JSON string: {"response":{"token":"{\"token\":\"123\",\"id\":191}"}} And then I have the following code to Deserialize it, but it is returning null: var def = new ...

There are two problems here, as far as I can tell: You don't have a response property to deserialize The "token:123 id:191" part is actually just a string - the value of the outer token property So if you change your code to: var def... more 11/21/2013 2:29:15 PM