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HTTP POST using JSON in Java

... You can make use of Gson library to convert your java classes to JSON objects. Create a pojo class for variables you want to send as per above Example {"name":"myname","age":"20"} becomes class pojo1 { String name; String age; //generate setter a...
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How to get the selected radio button’s value?

...r working. I just want to find the value of the radio button (which one is selected) and return it to a variable. For some reason it keeps returning undefined . ...
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The difference between sys.stdout.write and print?

... print first converts the object to a string (if it is not already a string). It will also put a space before the object if it is not the start of a line and a newline character at the end. When using stdout, you need to convert the obje...
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Java SimpleDateFormat(“yyyy-MM-dd'T'HH:mm:ss'Z'”) gives timezone as IST

...Sep 29 18:46:19 CST 2013 From Java Date Object to ISO 8601 String And to convert Dateobject to ISO 8601 Standard (yyyy-MM-dd'T'HH:mm:ss'Z') use following code SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.US); sdf.setTimeZone(TimeZone.getTimeZone("GMT")); ...
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How to launch Safari and open URL from iOS app

...omputed properties I'm guessing). Additionally URL is no longer implicitly convertible to NSURL, must be explicitly converted with as! UIApplication.sharedApplication.openURL(NSURL(string:"http://www.reddit.com/") as! URL) New Swift Syntax as of iOS 10.0 The openURL method has been deprecated an...
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psql - save results of command to a file

...peruser privileges and will write to a file on the server. Example: COPY (SELECT foo, bar FROM baz) TO '/tmp/query.csv' (format csv, delimiter ';') Creates a CSV file with ';' as the field separator. As always, see the documentation for details ...
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Calculate difference between two datetimes in MySQL

... USE TIMESTAMPDIFF MySQL function. For example, you can use: SELECT TIMESTAMPDIFF(SECOND, '2012-06-06 13:13:55', '2012-06-06 15:20:18') In your case, the third parameter of TIMSTAMPDIFF function would be the current login time (NOW()). Second parameter would be the last login time, w...
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IntelliJ and Tomcat…changed files are not automatically recognized by Tomcat

...ebug configuration (Run > Edit Configurations) Click the add icon, select 'artifact' and then select pizza_mvc:war exploded: Modify 'On update action' and 'On frame diactivation': Everytime you want to refresh your resources, press <Ctrl> + F10 ...
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CROSS JOIN vs INNER JOIN in SQL

...ame situation. These 2 examples will return the same result: Cross join select * from table1 cross join table2 where table1.id = table2.fk_id Inner join select * from table1 join table2 on table1.id = table2.fk_id Use the last method ...
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How to check that an object is empty in PHP?

... all } If SimpleXMLElement is more than one level deep, you can start by converting it to a pure array: $obj = simplexml_load_file($url); // `json_decode(json_encode($obj), TRUE)` can be slow because // you're converting to and from a JSON string. // I don't know another simple way to do a deep c...