Tuesday, 7 April 2015

Convert DateTime in Java using Joda Time.

How to convert String to Date in java using Joda Time ?

The below program converts the String-to-Date and Date-to-String using joda time library. Joda Time library is a 3rd party jar and its very easy and compact to use for such conversion. Download the joda jar from https://github.com/JodaOrg/joda-time/releases

Example :-

package jdevelopersguide.lab;

import java.util.Date;
import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormat;

public class ConvertToDate {

/**
* @param args
*/
public static void main(String[] args) {
String date="2015-04-07";
DateTime jodaTimeDate=DateTimeFormat.forPattern("yyyy-mm-dd").parseDateTime(date);
System.out.println("Joda Time Date is::"+jodaTimeDate);

//Convert Joda DateTime to Java Date
Date javaDate=jodaTimeDate.toDate();
System.out.println("Converted Java Date is:::"+javaDate);

//Convert Java Date to String
String convertedDate=DateTimeFormat.forPattern("dd-mm-yyyy").print(javaDate.getTime());
System.out.println("Converted Java Date to String::::"+convertedDate);
}

}


Output :-


Joda Time Date is::2015-01-07T00:04:00.000+11:00
Converted Java Date is:::Wed Jan 07 00:04:00 EST 2015
Converted Java Date to String::::07-04-2015



The  Pattern is really very simple and you can use as per your requirements. There are many pattens are there as follows :-

The pattern syntax is mostly compatible with java.text.SimpleDateFormat - time zone names cannot be parsed and a few more symbols are supported. All ASCII letters are reserved as pattern letters, which are defined as follows:
 Symbol  Meaning                      Presentation  Examples
 ------  -------                      ------------  -------
 G       era                          text          AD
 C       century of era (>=0)         number        20
 Y       year of era (>=0)            year          1996

 x       weekyear                     year          1996
 w       week of weekyear             number        27
 e       day of week                  number        2
 E       day of week                  text          Tuesday; Tue

 y       year                         year          1996
 D       day of year                  number        189
 M       month of year                month         July; Jul; 07
 d       day of month                 number        10

 a       halfday of day               text          PM
 K       hour of halfday (0~11)       number        0
 h       clockhour of halfday (1~12)  number        12

 H       hour of day (0~23)           number        0
 k       clockhour of day (1~24)      number        24
 m       minute of hour               number        30
 s       second of minute             number        55
 S       fraction of second           number        978

 z       time zone                    text          Pacific Standard Time; PST
 Z       time zone offset/id          zone          -0800; -08:00; America/Los_Angeles

 '       escape for text              delimiter
 ''      single quote                 literal       '
 

You can find more details in joda site





Monday, 6 April 2015

How to create a client jar from WSDL ?

There are many ways you can create the client.jar for your WSDL file . Using the below process you can create the client jar. But its not recommended to use for live project. For live project you need to create a project with maven structure and I will post that later. This can be used for testing purpose.

Open your linux/unix terminal and follow the steps below.


Step 1- Get the published WSDL.Use wsimport command to get the WSDL file. 

dev@optus-developer-desktop ~/temp/test $ wsimport -keep http://localhost:9001/myapps/TestApp?wsdl

dev@optus-developer-desktop ~/temp/test $ ls -ltr
total 16
drwxr-xr-x 3 dev dev 4096 Apr  5 10:52 au
drwxr-xr-x 3 dev dev 4096 Apr  5 10:52 webservice
drwxr-xr-x 4 dev dev 4096 Apr  5 10:52 org
drwxr-xr-x 3 dev dev 4096 Apr  5 10:52 types


Step 2- Create Jar file using jar command as below.


dev@javadevelopersguide-developer-desktop ~/temp/test $ jar -cvf client.jar .

.....
.....
.....
.....adding: org/javadevelopersguide/apps/com/resource/physicalresourcespec/ObjectFactory.class(in = 1568) (out= 627)(deflated 60%)
adding: org/javadevelopersguide/apps/com/resource/physicalresourcespec/PhysicalResourceSpec.class(in = 1205) (out= 500)(deflated 58%)
adding: org/javadevelopersguide/apps/com/resource/physicalresourcespec/package-info.class(in = 426) (out= 294)(deflated 30%)
adding: org/javadevelopersguide/apps/com/service/(in = 0) (out= 0)(stored 0%)
adding: org/javadevelopersguide/apps/com/service/servicespeccharacteristicvalue/(in = 0) (out= 0)(stored 0%)
adding: org/javadevelopersguide/apps/com/service/servicespeccharacteristicvalue/ServiceSpecCharacteristicValue.class(in = 1705) (out= 717)(deflated 57%)
adding: org/javadevelopersguide/apps/com/service/servicespeccharacteristicvalue/package-info.java(in = 289) (out= 199)(deflated 31%)
adding: org/javadevelopersguide/apps/com/service/servicespeccharacteristicvalue/ServiceSpecCharacteristicValue.java(in = 5228) (out= 855)(deflated 83%)
adding: org/javadevelopersguide/apps/com/service/servicespeccharacteristicvalue/ObjectFactory.java(in = 2190) (out= 705)(deflated 67%)
adding: org/javadevelopersguide/apps/com/service/servicespeccharacteristicvalue/ObjectFactory.class(in = 1711) (out= 639)(deflated 62%)
adding: org/javadevelopersguide/apps/com/service/servicespeccharacteristicvalue/package-info.class(in = 444) (out= 303)(deflated 31%)
adding: org/javadevelopersguide/apps/com/service/servicespeccharacteristic/(in = 0) (out= 0)(stored 0%)
adding: org/javadevelopersguide/apps/com/service/servicespeccharacteristic/ServiceSpecCharacteristic.java(in = 8623) (out= 1656)(deflated 80%)
adding: org/javadevelopersguide/apps/com/service/servicespeccharacteristic/package-info.java(in = 279) (out= 193)(deflated 30%)
adding: org/javadevelopersguide/apps/com/service/servicespeccharacteristic/ServiceSpecCharacteristic.class(in = 2805) (out= 1068)(deflated 61%)
adding: org/javadevelopersguide/apps/com/service/servicespeccharacteristic/ObjectFactory.java(in = 2095) (out= 695)(deflated 66%)
adding: org/javadevelopersguide/apps/com/service/servicespeccharacteristic/ObjectFactory.class(in = 1636) (out= 630)(deflated 61%)
adding: org/javadevelopersguide/apps/com/service/servicespeccharacteristic/package-info.class(in = 434) (out= 297)(deflated 31%)
...........
...........
...........
...........


dev@javadevelopersguide-developer-desktop ~/temp/test $ ls -ltr
total 1356
drwxr-xr-x 3 dev dev 4096 Apr 5 10:52 au
drwxr-xr-x 3 dev dev 4096 Apr 5 10:52 webservice
drwxr-xr-x 4 dev dev 4096 Apr 5 10:52 org
drwxr-xr-x 3 dev dev 4096 Apr 5 10:52 types
-rw-r--r-- 1 dev dev 1369704 Apr 5 10:56 client.jar


Now the client.jar is got generated, you can use this jar file and call the real published service.




Hope it will help you.