2010

1.	ADD_MONTHS: Schedule a number of months after the current date
2.	Adding one month to SYSDATE
3.	Adding two months to current date
4.	Combine to_char with add_months
5.	select add_months( sysdate, 12 ) "Next Year"
6.	select add_months( sysdate, -12 ) "Last Ye

Auto post into Blogspot using php code? « ANIL KUMAR PANIGRAHI 's Blog

การทำ Auto Post Blogger

Sunday, November 28, 2010

ใครใช้blogmagicแล้วไม่ได้เงินมารายงานตัวหน่อย

Blogmagic ช่วยคุณขายของ amazon ได้ง่ายๆ · บันทึกของตะวัน

Thursday, November 18, 2010

SEO Tools เครื่องมือต่าง ๆ ในการทำ SEO

SEO Tools เครื่องมือต่าง ๆ ในการทำ SEO: "http://pingomatic.com/"

การโปรโมทบล็อกตอนที่ 1 : วิธี Submit sitemap สำหรับ Blogger

Monday, May 10, 2010

Grails remote jQuery form validation

<script type="text/javascript">

$(function (){

$("#form").validate({

rules: {

'address.postalCode': {

required: true

messages: {

'address.postalCode': {

required: "Please enter a postal code."

}

});

</script>

<g:form method="post" action="register" name="form">

<input type="text" name="address.postalCode" id="postalCode" />

<input type="submit" value="Proceed" />

</g:form>

Grails Return JSON

Domain Class:

class MyDomain {

String name

String address

String gender

}

Controller Class :

class MyController {

def someaction =
{

List myDomains = MyDomain.findAllByGender(params.gender)

<em>/*Let say 5 objects are retrieved*/</em>

render myDomains as JSON

}

The above code in action will render a JSON string in the following format:

[
{
"name" : "John",
"address" : "New York",
"gender" : "Male"
},
{
"name" : "Rob",
"address" : "Indonasia",
"gender" : "Male"
},
{
"name" : "Shayam",
"address" : "New Delhi",
"gender" : "Male"
},
{
"name" : "Chang",
"address" : "Thailand",
"gender" : "Male"
},
{
"name" : "Ali",
"address" : "London",
"gender" : "Male"
}
]

following script would be writtent on the client Side (in the GSP):

<script>

$.document.ready(function(){

$('#someid').click(function(){

<strong>$.getJSON</strong>("${createLink(controller:'my',action:'someaction')}",{gender:'Male', ajax:
												'true'},
												function(myDomains){

var myHTMLString =
												''

for(var i =
												0
												; i < myDomains.length
												; i++)

myHTMLString = myHTMLString +
												'<tr><td>'
												+ myDomains[i].name
												+
												'</td>'

myHTMLString = myHTMLString +
												'<tr><td>'
												+ myDomains[i].address
												+
												'</td>'

myHTMLString = myHTMLString +
												'<tr><td>'
												+ myDomains[i].gender
												+
												'</td></tr>'

$('table#mytable').html(myHTMLString)

})

})

})

</script>

The HTML code would be like this :

<div id="someid">
Click for JSON Response
</div>
<table id="mytable">
<!–empty table –>
</table>

When you click on the displayed text the html page would become like following:

<div id="someid">
Click for JSON Response
</div>
<table id="mytable">
<tr>
<td>John</td>
<td>New York</td>
<td>Male</td>
</tr>
<tr>
<td>Rob</td>
<td>Indonasia</td>
<td>Male</td>
</tr>
<tr>
<td>Shayam</td>
<td>New Delhi</td>
<td>Male</td>
</tr>
<tr>
<td>Chang</td>
<td>Thailand</td>
<td>Male</td>
</tr>
<tr>
<td>Ali</td>
<td>London</td>
<td>Male</td>
</tr>
</table>

any kind of suggestions and comments are welcome……

Groovy List<Integer>

List<Integer> list = [5,6,7,8]

list.each({line -> println line})

list.each({println it})

Basic Groovy Lang…

println '######################## List ##########################\n'

List<Integer> list = [1,2,3,4,5,6,7,7,6,5,6,7,5,6,5]

println 'value list[0] is '+list[0]

println 'value list[3] is '+list[3]

println 'value list[8] is '+list[8]

println 'size = '+list.size()

println '######################## MAP ##########################\n'

Map map = [:]

def map2 = ["Jim":"Knopf", "Thomas":"Edison"]

println map2["Jim"]

map2["Test"] = "Tester"

println map2["Test"]

println '######################## For ##########################\n'

for (i in 0..9) {

println ("Hello $i" )

}

println '######################## Defines a string with special signs ##########################\n'

// Defines a string with special signs

def text = "John Jimbo jingeled happily ever after"

// Every word must be followed by a nonword character

// Match

if (text==~/(\w*\W+)*/){

println "Match was successful"

} else {

println "Match was not successful"

}

// Every word must be followed by a nonword character

// Find

if (text=~/(\w*\W+)*/){

println "Find was successful"

} else {

println "Find was not successful"

}

if (text==~/^J.*/ ){

println "There was a match"

} else {

println "No match found"

}

def newText = text.replaceAll(/\w+/, "hubba")

println newText

Tuesday, May 4, 2010

Crate Grails

C:\>grails create-app MyApp

Welcome to Grails 1.2.1 - http://grails.org/

Licensed under Apache Standard License 2.0

Grails home is set to: C:\grails-1.2.1

จากนั้น

grails tomcat

Found events script in plugin tomcat

Created Grails Application at C:\/MyApp

C:\>cd MyApp

C:\MyApp>grails run-app

Welcome to Grails 1.2.1 - http://grails.org/

Licensed under Apache Standard License 2.0

Grails home is set to: C:\grails-1.2.1

#4 ทดสอบ

http://localhost:8080/MyApp

Monday, May 3, 2010

Groovy Language

http://www.developer.com/tech/article.php/3841046/Real-World-REST-Using-Jersey-AJAX-and-JSON.htm

Sunday, April 25, 2010

global-web-application.xml deployment-version="10.1.3.3.0"

<?xml version="1.0"?>

<orion-web-app

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://xmlns.oracle.com/oracleas/schema/orion-web-10_0.xsd" deployment-version="10.1.3.3.0"

deployment-time="1272262623732"

jsp-cache-directory="./persistence"

jsp-cache-tlds="off"

jsp-taglib-locations=""

temporary-directory="./temp"

default-mime-type="application/octet-stream"

servlet-webdir="/servlet"

context-root="/"

schema-major-version="10" schema-minor-version="0" >

<mime-mappings path="./mime.types" />

<!-- Uncomment this element to control web application class loader behavior.

<web-app-class-loader search-local-classes-first="true" include-war-manifest-class-path="true" />

-->

<web-app>

<servlet-name>jsp</servlet-name>

<display-name>jsp</display-name>

<servlet-class>oracle.jsp.runtimev2.JspServlet</servlet-class>

<init-param>

<param-name>emit_debuginfo</param-name>

<param-value>true</param-value>

</init-param>

<init-param>

<param-name>reduce_tag_code</param-name>

<param-value>false</param-value>

</init-param>

<init-param>

<param-name>extra_imports</param-name>

<param-value></param-value>

</init-param>

<init-param>

<param-name>main_mode</param-name>

<param-value>recompile</param-value>

</init-param>

<init-param>

<param-name>debug_mode</param-name>

<param-value>true</param-value>

</init-param>

<init-param>

<param-name>precompile_check</param-name>

<param-value>false</param-value>

</init-param>

<init-param>

<param-name>forgive_dup_dir_attr</param-name>

<param-value>false</param-value>

</init-param>

<init-param>

<param-name>xml_validate</param-name>

<param-value>true</param-value>

</init-param>

<init-param>

<param-name>tag_reuse_default</param-name>

<param-value>compiletime</param-value>

</init-param>

<init-param>

<param-name>external_resource</param-name>

<param-value>true</param-value>

</init-param>

<init-param>

<param-name>static_text_in_chars</param-name>

<param-value>false</param-value>

</init-param>

<load-on-startup>0</load-on-startup>

</servlet>

<servlet-name>rmi-tunnel</servlet-name>

<display-name>rmi-tunnel</display-name>

<servlet-class>oracle.oc4j.rmi.tunnelling.TunnelledRmiServlet</servlet-class>

</servlet>

<servlet-name>jms</servlet-name>

<display-name>jms</display-name>

<servlet-class>com.evermind.server.jms.HTTPJMSRequestHandler</servlet-class>

</servlet>

<servlet-name>ssi</servlet-name>

<display-name>ssi</display-name>

<servlet-class>com.evermind.server.http.SSIServlet</servlet-class>

</servlet>

<servlet-name>cgi</servlet-name>

<display-name>cgi</display-name>

<servlet-class>com.evermind.server.http.CGIServlet</servlet-class>

</servlet>

<servlet-name>perl</servlet-name>

<display-name>perl</display-name>

<servlet-class>com.evermind.server.http.CGIServlet</servlet-class>

<init-param>

<param-name>interpreter</param-name>

<param-value>perl</param-value>

</init-param>

</servlet>

<servlet-name>php</servlet-name>

<display-name>php</display-name>

<servlet-class>com.evermind.server.http.CGIServlet</servlet-class>

<init-param>

<param-name>interpreter</param-name>

<param-value>php</param-value>

</init-param>

</servlet>

<servlet-mapping>

<servlet-name>rmi-tunnel</servlet-name>

<url-pattern>*.rmiTunnel</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>jms</servlet-name>

<url-pattern>/jms</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>jsp</servlet-name>

<url-pattern>*.jsp</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>jsp</servlet-name>

<url-pattern>*.JSP</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>jsp</servlet-name>

<url-pattern>*.jspx</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>jsp</servlet-name>

<url-pattern>*.sqljsp</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>jsp</servlet-name>

<url-pattern>*.SQLJSP</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>cgi</servlet-name>

<url-pattern>*.cgi</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>perl</servlet-name>

<url-pattern>*.pl</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>php</servlet-name>

<url-pattern>*.php</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>php</servlet-name>

<url-pattern>*.php3</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>php</servlet-name>

<url-pattern>*.phtml</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>ssi</servlet-name>

<url-pattern>*.shtml</url-pattern>

</servlet-mapping>

<mime-mapping>

<mime-type>text/vnd.wap.wml</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/x-portable-bitmap</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>audio/basic</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-tar</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/xsd</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/postscript</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>video/quicktime</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/x-portable-anymap</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/rtf</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/tab-separated-values</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/x-cmu-raster</mime-type>

</mime-mapping>

<mime-mapping>

<extension>movie</extension>

<mime-type>video/x-sgi-movie</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/png</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/x-sgml</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>x-conference/x-cooltalk</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>audio/x-pn-realaudio</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/mac-compactpro</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>audio/mpeg</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-netcdf</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>audio/mpeg</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>audio/x-aiff</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-dvi</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>audio/x-aiff</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/x-rgb</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/gif</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>x-world/x-vrml</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/x-portable-graymap</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-director</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-javascript</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-java-jnlp-file</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-director</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/octet-stream</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/postscript</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>x-world/x-vrml</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>video/x-msvideo</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-troff-man</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/octet-stream</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/plain</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/octet-stream</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/jpeg</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/msword</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/java-archive</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/html</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-tex</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-wais-source</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/xml</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/x-setext</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>audio/x-aiff</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/x-xwindowdump</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-troff</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/vnd.sun.j2me.app-descriptor</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>video/mpeg</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-shar</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-troff</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-koan</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-koan</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-koan</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-cpio</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/x-xpixmap</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-sv4cpio</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-koan</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/dtd</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/x-sgml</mime-type>

</mime-mapping>

<mime-mapping>

<extension>latex</extension>

<mime-type>application/x-latex</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-compress</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/xml</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/zip</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/vnd.wap.wmlscript</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/octet-stream</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-troff</mime-type>

</mime-mapping>

<mime-mapping>

<extension>texinfo</extension>

<mime-type>application/x-texinfo</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/css</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-netcdf</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/vnd.wap.wmlc</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>audio/basic</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-gzip</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/tiff</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>audio/x-pn-realaudio-plugin</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-csh</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/powerpoint</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-cdlink</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/postscript</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-troff-ms</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-gtar</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/pdf</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-tcl</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/x-portable-pixmap</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>chemical/x-pdb</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-stuffit</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/x-xbitmap</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/vnd.wap.wbmp</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/mac-binhex40</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/ief</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/oda</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/tiff</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-troff-me</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-director</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-sh</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/html</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/octet-stream</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-texinfo</mime-type>

</mime-mapping>

<mime-mapping>

<extension>wmlsc</extension>

<mime-type>application/vnd.wap.wmlscriptc</mime-type>

</mime-mapping>

<mime-mapping>

<extension>class</extension>

<mime-type>application/octet-stream</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>video/mpeg</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>video/mpeg</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>audio/x-wav</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/xml</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-sv4crc</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>video/quicktime</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/jpeg</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>chemical/x-pdb</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/richtext</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>image/jpeg</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-hdf</mime-type>

</mime-mapping>

<mime-mapping>

<extension>ustar</extension>

<mime-type>application/x-ustar</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/xml</mime-type>

</mime-mapping>

<mime-mapping>

<extension>bcpio</extension>

<mime-type>application/x-bcpio</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>audio/x-realaudio</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>text/xsl</mime-type>

</mime-mapping>

<mime-mapping>

<mime-type>application/x-mif</mime-type>

</mime-mapping>

<welcome-file-list>

<welcome-file>index.html</welcome-file>

<welcome-file>default.jsp</welcome-file>

<welcome-file>index.htm</welcome-file>

<welcome-file>index.jsp</welcome-file>

</welcome-file-list>

</web-app>

</orion-web-app>

Configuring the OC4J JSP Environment

Configuring the OC4J JSP Environment: "Configuring the OC4J JSP Environment"

Saturday, April 24, 2010

Part 2 of GrailsUI Screencast Series: AutoComplete Basics

Part 1 of GrailsUI Screencast series: The Basics

Friday, April 23, 2010

การ Pack .jar File

Command Prompt นะครับ

E:\ Servlet\WebContent\WEB-INF\classes>jar -cf y.jar com\*

//คือเอาตั้งแต่ com แล้วก็ sub directory ทุกตัวที่อยู่ใต้ com

หรือ

E:\ Servlet\WebContent\WEB-INF\classes>jar -cf y.jar *

//เอาทุกอย่าง pack เป็น jar ที่อยู่ใต้ classes

จากนั้น copy ไปไว้ที่ WEB-INF\lib

แล้วทำการ ลบข้อมูล .class ทุกอย่าง ออกไปให้หมด

เราก็สามารถใช้ class ได้จาก jar ของเราแล้ว

การปรับ Config server.xml ตอน Deploy

1.สิ่งที่ ควร comment

<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />

2.ควรทำการชี้ app ของเราไปที่อื่น เพื่อป้องกัน Secure

<!-- Define the default virtual host

Note: XML Schema validation will not work with Xerces 2.2.

-->

<Host name="localhost" appBase="c:/myapp"

unpackWARs="true" autoDeploy="true"

xmlValidation="false" xmlNamespaceAware="false">

ระวัง ก่อนการทำ ควร Backup File ไว้ด้วยทุกครั้ง

การ Run Tomcat แก้ไข Classpath.bat

C:\apache-tomcat-6.0.16\bin\ setclasspath.bat

rem Set standard command for invoking Java.

rem Note that NT requires a window name argument when using start.

rem Also note the quoting as JAVA_HOME may contain spaces.

set _RUNJAVA="%JRE_HOME%\bin\java" –server

หรือ

set _RUNJAVA="%JRE_HOME%\bin\java" –client นี่คือ default

set _RUNJAVAW="%JRE_HOME%\bin\javaw"

set _RUNJDB="%JAVA_HOME%\bin\jdb"

set _RUNJAVAC="%JAVA_HOME%\bin\javac"

java -help

C:\java -help

Usage: java [-options] class [args...]

(to execute a class)

or java [-options] -jar jarfile [args...]

(to execute a jar file)

where options include:

-client to select the "client" VM

-server to select the "server" VM

-hotspot is a synonym for the "client" VM [deprecated]

The default VM is client.

-cp <class search path of directories and zip/jar files>

-classpath <class search path of directories and zip/jar files>

A ; separated list of directories, JAR archives,

and ZIP archives to search for class files.

-D<name>=<value>

set a system property

-verbose[:class|gc|jni]

enable verbose output

-version print product version and exit

-version:<value>

require the specified version to run

-showversion print product version and continue

-jre-restrict-search | -jre-no-restrict-search

include/exclude user private JREs in the version search

-? -help print this help message

-X print help on non-standard options

-ea[:<packagename>...|:<classname>]

-enableassertions[:<packagename>...|:<classname>]

enable assertions

-da[:<packagename>...|:<classname>]

-disableassertions[:<packagename>...|:<classname>]

disable assertions

-esa | -enablesystemassertions

enable system assertions

-dsa | -disablesystemassertions

disable system assertions

-agentlib:<libname>[=<options>]

load native agent library <libname>, e.g. -agentlib:hprof

see also, -agentlib:jdwp=help and -agentlib:hprof=help

-agentpath:<pathname>[=<options>]

load native agent library by full pathname

-javaagent:<jarpath>[=<options>]

load Java programming language agent, see java.lang.instrument

-splash:<imagepath>

show splash screen with specified image

Tip Tomcat 1.6

ทดสอบแก้ไฟล์แล้ว รัน start เราจะไม่สามารถรัน command prompt ไม่ได้

C:\apache-tomcat-6.0.16\conf\server.xml

C:\apache-tomcat-6.0.16\bin

พิมพ์ startup

วิธีแก้ คือ

C:\apache-tomcat-6.0.16\bin

พิมพ์ catalina run

Thursday, April 22, 2010

การใช้ StringTokenizer

// Token.java

// StringTokenizer เป็น immutable

import java.io.*;

import java.util.*;

class Token {

public static void main(String args[]) throws IOException {

String s = "john jack:joe,jim;judy";

// StringTokenizer st = new StringTokenizer(s);

StringTokenizer st = new StringTokenizer(s, ",.;: ");

while(st.hasMoreElements())

System.out.println(st.nextToken());

}

เอาไว้ จัดการข้อมูลที่ส่งไป ส่งมาได้

String กับ StringBuffer ต่างกันในเรื่องของการเปลือง Memory บน Heap (Heap Memory)

// StringBufferTest1.java

class StringBufferTest1 {

public static void main(String args[]) {

String s = "";

// StringBuffer sb = new StringBuffer();

Runtime rt = Runtime.getRuntime();

long x = rt.freeMemory();

for(int i = 0; i < 1000; i++)

s += "0";

// sb.append("0");

long y = rt.freeMemory();

System.out.println(x - y);

}

// StringBufferTest2.java

class StringBufferTest2 {

public static void main(String args[]) {

//String s = "";

StringBuffer sb = new StringBuffer();

Runtime rt = Runtime.getRuntime();

long x = rt.freeMemory();

for(int i = 0; i < 1000; i++)

//s += "0";

sb.append("0");

long y = rt.freeMemory();

System.out.println(x - y);

}

//แนะนำควรใช้ ตัวที่เป็น StringBuffer เพราะไม่เปลือง Memory

String Immutable in Java

String a = new String("hello");

String b = new String("hello");

// a==b is false

String x="hello";

String y="hello";

//x==y is true

X==y นั้น

จาก y จะไปมองว่ามี hello หรือ ไม่ถ้ามี ก็จะ refer เลยทำให้ เท่ากับ true

การใช้งาน StringStream

// StringStream.java

import java.io.*;

class StringStream {

public static void main(String args[]) throws IOException {

String s = "Hello! how do you do?";

StringReader sr = new StringReader(s);

StringWriter sw = new StringWriter();

int c;

while ((c = sr.read()) != -1)

sw.write(c);

sr.close();

sw.close();

System.out.println(sw.toString());

}

javap java.io.File

C:\tmp\stream>javap java.io.File >io_file.txt

Compiled from "File.java"

public class java.io.File extends java.lang.Object implements java.io.Serializable,java.lang.Comparable{

public static final char separatorChar;

public static final java.lang.String separator;

public static final char pathSeparatorChar;

public static final java.lang.String pathSeparator;

static final boolean $assertionsDisabled;

int getPrefixLength();

public java.io.File(java.lang.String);

public java.io.File(java.lang.String, java.lang.String);

public java.io.File(java.io.File, java.lang.String);

public java.io.File(java.net.URI);

public java.lang.String getName();

public java.lang.String getParent();

public java.io.File getParentFile();

public java.lang.String getPath();

public boolean isAbsolute();

public java.lang.String getAbsolutePath();

public java.io.File getAbsoluteFile();

public java.lang.String getCanonicalPath() throws java.io.IOException;

public java.io.File getCanonicalFile() throws java.io.IOException;

public java.net.URL toURL() throws java.net.MalformedURLException;

public java.net.URI toURI();

public boolean canRead();

public boolean canWrite();

public boolean exists();

public boolean isDirectory();

public boolean isFile();

public boolean isHidden();

public long lastModified();

public long length();

public boolean createNewFile() throws java.io.IOException;

public boolean delete();

public void deleteOnExit();

public java.lang.String[] list();

public java.lang.String[] list(java.io.FilenameFilter);

public java.io.File[] listFiles();

public java.io.File[] listFiles(java.io.FilenameFilter);

public java.io.File[] listFiles(java.io.FileFilter);

public boolean mkdir();

public boolean mkdirs();

public boolean renameTo(java.io.File);

public boolean setLastModified(long);

public boolean setReadOnly();

public boolean setWritable(boolean, boolean);

public boolean setWritable(boolean);

public boolean setReadable(boolean, boolean);

public boolean setReadable(boolean);

public boolean setExecutable(boolean, boolean);

public boolean setExecutable(boolean);

public boolean canExecute();

public static java.io.File[] listRoots();

public long getTotalSpace();

public long getFreeSpace();

public long getUsableSpace();

public static java.io.File createTempFile(java.lang.String, java.lang.String, java.io.File) throws java.io.IOException;

public static java.io.File createTempFile(java.lang.String, java.lang.String) throws java.io.IOException;

public int compareTo(java.io.File);

public boolean equals(java.lang.Object);

public int hashCode();

public java.lang.String toString();

public int compareTo(java.lang.Object);

static java.io.FileSystem access$000();

static {};

}

ต้องการ write ลง file อย่าง ง่ายๆ

// PrintFile.java

import java.io.*;

class PrintFile {

public static void main(String args[]) {

PrintWriter pw = null;

try {

pw = new PrintWriter("tmp");

} catch(FileNotFoundException e) {

System.err.println(e);

}

pw.println("Hello! how do you do?");

pw.close();

}

DataRead ใช้ได้กับ Byte เท่านั้น

// DataRead.java

import java.io.*;

class DataRead {

public static void main(String args[]) throws IOException {

DataInputStream dis = new DataInputStream(System.in);

int x = dis.readInt();

double y = dis.readDouble();

System.out.println(x);

System.out.println(y);

}

ไว้ใช้กับตัวเลข เช่น ระบบ ธนาคาร

DataWrite ใช้ได้กับ Byte เท่านั้น

// DataWrite.java

import java.io.*;

class DataWrite {

public static void main(String args[]) throws IOException {

DataOutputStream dos = new DataOutputStream(System.out);

int x = 12345;

double y = 1.2345;

dos.writeInt(x);

dos.writeDouble(y);

dos.close();

}

เอา BufferedRW มาใช้งาน

// BufferedRW.java ใช้แบบนี้ ดี

import java.io.*;

class BufferedRW {

public static void main(String args[]) throws IOException {

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

String s;

while ((s = br.readLine()) != null)

bw.write(s + "\n");

bw.close();

}

โครงสร้าง Stream

ทดสอบการใช้ Char Stream

// ThaiWrite.java

import java.io.*;

class ThaiWrite {

public static void main(String args[]) throws IOException {

// OutputStreamWriter osw = new OutputStreamWriter(System.out,"Cp1252");

OutputStreamWriter osw = new OutputStreamWriter(System.out, "MS874");

osw.write('\u0E01'); osw.write('ก');

osw.close();

}

Out ที่ได้คือ

กก

การทดสอบ Encoding Stream

// EncodingTest.java

import java.io.*;

class EncodingTest {

public static void main(String args[]) {

InputStreamReader isr = new InputStreamReader(System.in);

System.out.println(isr.getEncoding());

}

ค่าที่อ่านออกมาได้ จะเป็นรหัสของ Stream นั้นๆ (ตาม Localhost)

เช่น

ไทย MS874

อังกฤษ Cp1252

Stream Read,Write StreamRW.java

// StreamRW.java

import java.io.*;

class StreamRW {

public static void main(String args[]) throws IOException {

int n;

char [] b = new char [1024];

InputStreamReader isr = new InputStreamReader(System.in);

OutputStreamWriter osw = new OutputStreamWriter(System.out);

while ((n = isr.read(b)) > 0)

osw.write(b, 0, n);

osw.close();

}

//########################################################

การอ่าน Stream ต่อกัน ดูได้จาก System.in ß
เป็น Stream เหมือนกัน จากนั้นก็เอา InputStreamReader มารับ

นี่ก็คือ ที่เราเรียกว่า Stream ต่อ Stream

คำสั่ง เขียน method ของ class ไปเก็บไว้ที่ File

ที่ Command Prompt

C:\tmp>javap java.io.InputStream >is.txt

####################################################################

Output: c:\tmp\is.txt

####################################################################

Compiled from "InputStream.java"

public abstract class java.io.InputStream extends java.lang.Object implements java.io.Closeable{

public java.io.InputStream();

public abstract int read() throws java.io.IOException;

public int read(byte[]) throws java.io.IOException;

public int read(byte[], int, int) throws java.io.IOException;

public long skip(long) throws java.io.IOException;

public int available() throws java.io.IOException;

public void close() throws java.io.IOException;

public synchronized void mark(int);

public synchronized void reset() throws java.io.IOException;

public boolean markSupported();

}

Wednesday, April 21, 2010

Step 4: Derby Network Server

Config

Monday, April 19, 2010

Manager Online

Clear Memory In Java Lang

public
static
void main(String[] args) {

Runtime rt = Runtime.getRuntime();

System.out.println("1 ## "+rt.freeMemory());

A a[] = new A[1000];

for(int i=0;i<1000;i++){

a[i]=new A();

}

System.out.println("2 ## "+rt.freeMemory());

for(int i=0;i<1000;i++){

a[i]=null;

}

System.out.println("3 set null ## "+rt.freeMemory());

System.out.println("#################################");

rt.gc();

System.out.println("4 call .gc ## "+rt.freeMemory());

}

//######################### Out Put #############################

1 ## 4917112

2 ## 4894568

3 set null ## 4894568

#################################

4 call .gc ## 5013408