how to get error code from exception in java

To test the JSON string:{"Access_token": "Hkbql5o_l67dz7_vjratkbwtlk9yj5qymuojthar8baj0xwf4wxw1p4ym4itz3-ptwrrovtbcnjnyjglfed_ 4bb0hiqgp8v-axojuuk1tfs "," expires_in ": 7200," Refresh_token ":" _or_31yep8xhxgwvrazdwikxfflkjfb3itrpfan_ 3kpavqaplw6paw_zmo4gskc2r0qxqsyjrvlvbdrq4pw9jali7s6pb8g8ywswo-pcbqs "," OpenID ":" O7jbjwzbueslqnllqy_ur25bje3o "," Scope ":" Snsapi_base "}The Java code gets:Jsonobject Jsono

Reference: http://cn-done.iteye.com/blog/2041971 PackageCom.wjz.demo;Importjava.lang.management.ManagementFactory;ImportJava.lang.management.MemoryMXBean;Importjava.util.List; Public classJvmargs { Public Static voidMain (string[] args) {Memorymxbean Memorymbean=Managementfactory.getmemorymxbean (); System.out.println ("Heap Memory Information:" +memorymbean.getheapmemoryusage ()); System.out.println ("Method Area Memory Information:" +memorymbean.getnonheapmemoryusage ()); ListManagementfactory

Objective I believe that everyone in Java to use the most of the time class is java.util.Date , because the date class getYear() , getMonth() such as the acquisition of the year, month, day of the method is discarded, so the problem of this article to use the calendar to achieve, the following directly look at the sample code. Use Calendar class: Calendar @Test public void Datetest () { Date t

= saxbuilder. Build (in ); } Catch (exception e ){E. printstacktrace ();}If (log. isinfoenabled ()){Long end = system. currenttimemillis ();Xmloutputter outp = new xmloutputter ();Log.info ("response [" + (end-begin) + "]:" + outp. outputstring (DOC ));} Return Doc;} /** * Send a GET request** @ Param URL* URL* @ Return jsonobject*/ Public static jsonobject getjsondatafromurl (string URL ){Long begin = s

Download Ava Web project, sometimes you need to manually read classpath the following configuration file, here to summarize a bit of the way to read the classpath path, share a bit.Method One:Java code Download String path = Test.Class.getResource ("/"). ToString (); System.out.println ("path =" + path); String Path = Test.class.getResource ("/"). ToString (); SYSTEM.OUT.PRINTLN ("path =" + path); This method has no problem unde

>] The timestamp mechanism's public key certificate the[-altsignerclass>] The class name of the replacement signature mechanism -[-altsignerpathPath List>] The location of the replacement signature mechanism - [-INTERNALSF] is contained within the signature block. SF file - [-sectionsonly] does not calculate the hash of the entire manifest + [-protected] keystore protected authentication Path -[-providernamename>] Provider name +[-providerclassclass>the name of the cryptographic service provider

Thunder Download the core idea is to verify the MD5 value of the file, two files if the MD5 is the same file.When a user requests to download a file, it MD5 the URL that owns the file based on the file retained in the database.Hooks a user request to this URL and mimics a false breakpoint continuation request, stitching a normal file from several URLs.Check the information, Java can also implement the file MD5 check

This article explains the time in Java in the acquisition and formatting, I. Get the current system time and date and format the output: Import java.util.Date; Import Java.text.SimpleDateFormat; public class Nowstring {public static void Main (string[] args) { SimpleDateFormat df = new SimpleDateFormat ("yyyy -mm-dd HH:mm:ss ");//Set Date format System.out.println (Df.format (new date));//new Dat

Get the source of the webpage: PackageCom.atguigu.crud.controller;ImportJava.io.BufferedReader;ImportJava.io.BufferedWriter;ImportJava.io.FileWriter;Importjava.io.IOException;ImportJava.io.InputStreamReader;Importjava.net.MalformedURLException;ImportJava.net.URL; Public classSsssss { Public Static voidMain (string[] a) {Try{URL URL=NewURL ("http://www.baidu.com"); BufferedReader Reader=NewBufferedReader (NewInputStreamReader (Url.openstream ())); Buff

Directly on the code Copy Code code as follows: Import Java.util.Calendar; Import Java.util.Date; Import Org.apache.commons.logging.Log; Import Org.apache.commons.logging.LogFactory; /** * Date Tool Class * @author WXQ * */ public class Dateutils { private static Final log = Logfactory.getlog (Dateutils.class); /** * How many weeks to

* * 1. Gets the class name, method name, and line number of the currently running code, mainly through the Java.lang.StackTraceElement class * * 2. * [1] Obtain the caller's method name, with the new throwable * String _methodname = new Exception (). Getstacktrace () [1].getmethodname (); * [0] Obtains the current method name, with the new throwable * String _thismethodname = new

Java Get hostname code Support for Windows and Linux: public static String Gethostnameforliunx () { try {return (Inetaddress.getlocalhost ()). GetHostName (); } catch (Unknownhostexception Uhe) { String host = Uhe.getmessage ();//host = "Hostname:hostname" if (host!= null { int colon = host.indexof (': '); if (Colon > 0) {return ho

(InputStream); } Catch(FileNotFoundException e) {e.printstacktrace (); } Catch(IOException e) {e.printstacktrace (); } } Public Static voidMain (string[] args)throwsclassnotfoundexception, illegalaccessexception, instantiationexception {init (); if(prop.size () = = 0) {System.out.println ("No one's going to bring dinner today."); return; } //Create an agencyProxyagent proxyagent =Newproxyagent (); for(String S:prop.stringpropertynames ()) {string ClassName=Prop.getproperty (s); C

Overview The result file for the BEAM report is defined by the--beam::complaint_file in Build.xml, where this is assumed to be beam-messages. Beam-messages records all of the Code defects reported, these defects are divided into Error,mistake and WARNING three categories, the severity of descending. Each specific error, mistake, and WARNING represent a bug patte

, such as icontract, it is possible to put assertions into source code and convert them automatically into Java code that checks to make sure that the assertion is always valid. Because assertions processed by these tools are designated as Javadoc annotations in the original file, we can easily compile the file without having to run the preprocessor to make a "pr

Nonsense not much to say that on the code Copy Code code as follows: String basepath = request.getscheme () + "://" +request.getservername () + ":" +request.getserverport () +path+ "/"; Date Dnow = new Date (); Current timeDate Dbefore = new Date (); Calendar calendar = Calendar.getinstance (); Get the C

public class Test1 {public static void Main (string[] args) {SimpleDateFormat df = new SimpleDateFormat ("Yyyy-mm-dd");Set Date formatSystem.out.println (Df.format (New Date ()));Output Current TimeCalendar C = calendar.getinstance ();Set Date formatSystem.out.println (C.gettime ());Output Current TimeC.set (Calendar.month, C.get (calendar.month) +1);Get Next JanuaryC.set (Calendar.day_of_month, 1);Get numb

Package Com.test.brouse;import Java.io.ioexception;import Java.io.inputstream;import Java.net.malformedurlexception;import Java.net.url;public class Html {/** * @param args * @throws ioexception * @thro WS malformedurlexception */public static void Main (string[] args) throws Malformedurlexception, IOException {//TODO Auto-generated method Stubinputstream in= (New URL ("http://www.baidu.com")). OpenStream (); int C=-1;while ((C=in.read () ) {!=-1) {System.out.write (c);}}}The output result isJ

();}});} private void Showfile () {Java.util.Scanner input = null; Use Scanner for text inputurl url = null;try{//Obtain URL from the text fieldurl = new URL (jtfurl.gettext (). Trim ());// Create a Scanner for input streaminput = new Java.util.Scanner (Url.openstream ());//Read a line and append the line to th E Text Areawhile (Input.hasnext ()) {Jtafile.append (Input.nextline () + "\ n");} Jlblstatus.settext ("File loaded Successfully");} catch (Malformedurlexception ex) {jlblstatus.settext

One feature of the Java programming language is storage automation, which frees programmers from the error-prone process of releasing used memory. However, many programs still have to deal with resource issues, such as file and database connections, which must be explicitly released after use. As with manual management of storage, programmers make many mistakes in managing resources manually. One of these i