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How to round a number to n decimal places in Java

What I would like is a method to convert a double to a string which rounds using the half-up method - i.e. if the decimal to be rounded is 5, it always rounds up to the next number. This is the standard method of rounding most people expect in most situations. ...
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A non well formed numeric value encountered

... Because you are passing a string as the second argument to the date function, which should be an integer. string date ( string $format [, int $timestamp = time() ] ) Try strtotime which will Parse about any English textual datetime description i...
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Convert DateTime to String PHP

...ready researched a lot of site on how can I convert PHP DateTime object to String. I always see "String to DateTime" and not "DateTime to String" ...
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Check if character is number?

...arseInt and than check with isNaN or if you want to work directly on your string you can use regexp like this: function is_numeric(str){ return /^\d+$/.test(str); } share | improve this answe...
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How to change JFrame icon [duplicate]

...ionListener{ /** * */ /** * @param args */ public static void main(String[] args) { String appdata = System.getenv("APPDATA"); String iconPath = appdata + "\\JAPP_icon.png"; File icon = new File(iconPath); if(!icon.exists()){ FileDownloaderNEW fd = new FileDownloader...
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Is “argv[0] = name-of-executable” an accepted standard or just a common convention?

...1 states (my emphasis): If the value of argc is greater than zero, the string pointed to by argv[0] represents the program name; argv[0][0] shall be the null character if the program name is not available from the host environment. So no, it's only the program name if that name is available. A...
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How to get the URL of the current page in C# [duplicate]

... Try this : string url = HttpContext.Current.Request.Url.AbsoluteUri; // http://localhost:1302/TESTERS/Default6.aspx string path = HttpContext.Current.Request.Url.AbsolutePath; // /TESTERS/Default6.aspx string host = HttpContext.Curren...
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How to print instances of a class using print()?

...an use instead of Str ; note that it should return a unicode object, not a string (but if you return a string, the conversion to unicode will be done anyway...) – kender Oct 8 '09 at 5:32 ...
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Deserialize JSON to ArrayList using Jackson

...ixIn , to assist me with the deserialization. MyPojo has only int and String instance variables combined with proper getters and setters. MyPojoDeMixIn looks something like this: ...
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jQuery SVG, why can't I addClass?

...ts className is a little different. For an SVG element, className is not a string, but an instance of SVGAnimatedString. Consider the following code: var test_div = document.getElementById('test-div'); var test_svg = document.getElementById('test-svg'); console.log(test_div.className); console.l...