eFitnesse

FitNesse is a software development collaboration tool

http://fitnesse.org/

split("|") error

String a = "sssrrrr|ccccc";

String[] b= a.split("\\|");

System.out.println(b[0]);

simple File upload

========= HTML =============
[html]
[head]
[meta http-equiv="Content-Type" content="text/html; charset=EUC-KR"]
[title]1[/title]
[body]
[form method="post" action="upload1.jsp" enctype="multipart/form-data"]
Name : [input type="text" name="userName" value="myname"][br]
file : [input type="file" name="upfile"][br]
[input type="submit" value="submit"]
[/form]
[/body]
[/html]

====================

[head]
[meta http-equiv="Content-Type" content="text/html; charset=EUC-KR"]
[title] 1[/title]
[/head]
[body]
[%
String path = "C:/test111/";
DiskFileUpload upload = new DiskFileUpload();
upload.setSizeMax(1024 * 1024);
upload.setSizeThreshold(4096);
upload.setRepositoryPath(path + "temp");
List items = upload.parseRequest(request);


FileItem item1 = (FileItem) items.get(0);
String name = item1.getString("euc-kr");
out.println("Name : "+name + "[br]");


FileItem item2 = (FileItem) items.get(1);
String fileName = item2.getName();
fileName = fileName.substring(fileName.lastIndexOf("\\") + 1);
long fileSize = item2.getSize();
File file = new File(path + "/" + fileName);
item2.write(file);
out.println(fileName + " !!!");
%]
[/body]
[/html]

Get All parameter (key and value)

Enumeration ss = request.getParameterNames();

while(ss.hasMoreElements()) {

String key = (String)ss.nextElement();
String value = request.getParameter(key);
System.out.println(key + " : " + value+"
");
}

// if value is array type such as check box
/*
String test[] = request.getParameterValues("test");

if(test != null) {
for(int i=0; i < test.length; i++) {
System.out.println("test[" + i + "] : " + test[i] );
}
}
*/

JSON : Array List <> JSON

Converting method between array List and JSON

You need some jar files.
1. json-lib-2.2.2-jdk15.jar
2. commons-beanutils.jar
3. commons-lang.jar
4. commons-collections.jar
5. commons-logging.jar
6. ezmorph-1.0.4.jar

Please set classpath those jar files.
And here is sample source to change from ArrayList to JSON.


import java.util.ArrayList;
import java.util.List;

import net.sf.json.JSONArray;

public class testA {

/**
* @param args
*/
public static void main(String[] args) {

List mybeanList = new ArrayList();
mybeanList.add("S");
mybeanList.add("b");

JSONArray jsonA = JSONArray.fromObject(mybeanList);
System.out.println(jsonA);
}

}

[Spring] Basic Example 1

[Spring] Simple MVC Web application Example

Modify from Spring reference
http://www.springframework.org/docs/Spring-MVC-step-by-step/index.html

- Create Control and just display hello world
click here

Spring Eclipse IDE sample

- install Eclipse IDE for spring and simple demo

* http://www.javabeat.net/articles/2007/09/introduction-to-spring-ide-2-0/


- Sample source
click Here

JBoss Error : Port already in use: 1098

when you run jboss from "run.bat" file, you might have the error "Port already in use: 1098"

In this case, please open /server/default/conf/jboss-service.xml
and change from "from 1098 to 1122(a port hasn't been taken)".

Then restarted the JBOSS, everything looks ok now.

Exception Example

class NewExceptionTest {
public static void main(String args[]) {
try {
startInstall();
copyFiles();
} catch (SpaceException e) {
System.out.println("error : " + e.getMessage());
e.printStackTrace();
System.out.println("not enough space.");
} catch (MemoryException me) {
System.out.println("error : " + me.getMessage());
me.printStackTrace();
System.gc(); //expand memory from Garbage Collection
System.out.println("install again.");
} finally {
deleteTempFiles(); // delete temp files
} // end of try
} // end of main

static void startInstall() throws SpaceException, MemoryException {
if(!enoughSpace()) // if not enought space...
throw new SpaceException("not enought space.");
if (!enoughMemory()) // if not memory space..
throw new MemoryException("not enought memory space.");
} // end of startInstall

static void copyFiles() { /* copy code. */ }
static void deleteTempFiles() { /* delete temp files code .*/}

static boolean enoughSpace() {
// code for checking enough space.
return false;
}
static boolean enoughMemory() {
// code for checking memory space.
return true;
}
} // end of ExceptionTest

class SpaceException extends Exception {
SpaceException(String msg) {
super(msg);
}
}

class MemoryException extends Exception {
MemoryException(String msg) {
super(msg);
}
}

Java Interface concept - JDBC way

==== Developer A side ======
class InterfaceTest2 {
public static void main(String[] args) {
A a = new A();
a.methodA();
}
}


==== Developer B side ======
=== Do not change Class name "A" and method "methodA"
=== Except two factors B side can change anything

class A {
void methodA() {
I i = InstanceManager.getInstance();
i.methodB();
}
}

interface I {
public abstract void methodB();
}

class B implements I {
public void methodB() {
System.out.println("methodB in B class");
}
}

class InstanceManager {
public static I getInstance() {
return new B();
}
}

Java Split Example

public class Test {
public static void main(String[] args) {
String temp = "123.456";

String[] temp2 = new String[2];

temp2 = temp.split("[.]");

System.out.println(temp2[0]);
}
}

Simple JSon Example

<html>
<head>
<title>JSON test</title>

</head>
<body>

<select id="sel">
</select>

<script type="text/javascript">
var cafe = {"cafelist" : [
{"name" : "aaaaaa", "clubid" : "11111111"},
{"name" : "bbbbbbb", "clubid" : "2222222"},
{"name" : "CCC", "clubid" : 123213213}
]
};

for (var i=0; i<cafe.cafelist.length; i++)
{
//alert(cafe.cafelist[i].name + "," + cafe.cafelist[i].clubid);
var s = document.getElementById("sel");
s.options.add(new Option(cafe.cafelist[i].name, cafe.cafelist[i].clubid),i);
}
</script>
</body>
</html>

Java Interface concept example2

===== TVBoard.java ===========
public interface TVBoard {

public void channelDown();
public void channelUp();
public void volumeDown();
public void volumeUp();
public void powerOnOff(boolean power);
}

========== SSgTV.java ===========

public class SSgTV implements TVBoard {

private String name = "SSg TV";
private int volume = 5;
private int channel = 7;
private boolean power = false;

public SSgTV() {
System.out.println("SSg TV is created.");
}

@Override
public void channelDown() {
this.channel -= 1;
System.out.println(this.name+"- channelDown");
}

@Override
public void channelUp() {
this.channel += 1;
System.out.println(this.name+" + channelIp");
}

@Override
public void volumeDown() {
this.volume -= 1;
System.out.println(this.name+" - volumnDown");
}

@Override
public void volumeUp() {
this.volume += 1;
System.out.println(this.name+" + volumnUp");
}

@Override
public void powerOnOff(boolean power) {
this.power = power;

if (this.power==false)
System.out.println(this.name+" power off");
else
System.out.println(this.name+" power on");
}

public void SleepTimer(int time) {
System.out.println(time+" please wait for power on or off");

this.powerOnOff(false);
}
}

============== LGsTV.java ==============

public class LGsTV implements TVBoard {

private String name = "LGg TV";
private int volume = 5;
private int channel = 7;
private boolean power = false;

public LGsTV() {
System.out.println("LGs TV is created.");
}

@Override
public void channelDown() {
this.channel -= 1;
System.out.println(this.name+"- channelDown");
}

@Override
public void channelUp() {
this.channel += 1;
System.out.println(this.name+" + channelIp");
}

@Override
public void volumeDown() {
this.volume -= 1;
System.out.println(this.name+" - volumnDown");
}

@Override
public void volumeUp() {
this.volume += 1;
System.out.println(this.name+" + volumnUp");
}

@Override
public void powerOnOff(boolean power) {
this.power = power;

if (this.power==false)
System.out.println(this.name+" power off");
else
System.out.println(this.name+" power on");
}

public void SleepTimer(int time) {
System.out.println(time+" please wait for power on or off");

this.powerOnOff(false);
}

}

=============== TVTestMain.java =============

public class TVTestMain {

/**
* @param args
*/
public static void main(String[] args) {
TVBoard tvBoard = new SSgTV();
tvBoard.powerOnOff(true);
tvBoard.channelUp();
tvBoard.channelDown();
tvBoard.volumeUp();
tvBoard.volumeUp();
tvBoard.volumeUp();
tvBoard.volumeUp();
tvBoard.powerOnOff(false);
System.out.println();

TVBoard gTvBoard = new LGsTV();
gTvBoard.powerOnOff(true);
gTvBoard.channelUp();
gTvBoard.channelDown();
gTvBoard.volumeUp();
gTvBoard.volumeUp();
gTvBoard.volumeUp();
gTvBoard.volumeUp();
gTvBoard.powerOnOff(false);
}

}

Java Interface concept example

========= Example 1 =================
**** GuguInter.java ***
interface GuguInter {
public static final int input1 = 2;
public static final int input2 = 3;
public void printGugu2();
pulbic void printGugu3();
}

***** PrintGuguClass.java ******

public class PrintGuguClass implements GuguInter {
PrintGuguClass c = new PrintGuguClass();
c.printGugu2();
c.printGugu3();
}

public void printGugu2() {
System.out.println(GuguInter.input1+ " printed");
}

public void printGugu3() {
System.out.println(GuguInter.input2+ " printed");
}

}

============ Example 2 ====================
****** myInterface.java **********
interface myInterface {
public abstract void method();
}

**** CB.java ***********
class CB implements myInterface {
public void method() {
System.out.println("method in CB");
}
}

***** CC.java **********
class CC implements myInterface {
public void method() {
System.out.println("method in CC");
}
}

***** CA.java ********
class CA {
public void method(myInterface mi) {
my.method()
}
}

***** Cmain.java *****
class Cmain {
public static void main(String[] args) {
CA ca = new CA();
ca.method(new CB());
ca.method(new CC());
}
}

* Eclipse Live Tutorial Web site

* Eclipse Live Tutorial Web site

http://live.eclipse.org/

replaceAll with special words

* replaceAll with special words

======================
public class MyTest {

public static void main(String args[]) {

String st = "\\";

st = st.replaceAll("\\\\","\\\\\\\\");

System.out.println(st);
}
}
======================================

Dom tutorial (update, create, idelete....)

tutotial site

look at the sample

Dom parsing as loop

This is an example how we can parse xml file with using loop method.

see here

Map example

import java.util.*;

public class HashMapTest
{
public static void main(String argv[])
{
HashMap hm = new HashMap();
System.out.println(hm.put("aaa", "111"));
System.out.println(hm.put("bbb", "222"));
System.out.println(hm.put("aaa", "444"));
System.out.println(hm.put("ccc", "333"));
System.out.println(hm.put("ccc", null));

System.out.println("HashMap size : " + hm.size());

Set set = hm.keySet();
Object []hmKeys = set.toArray();
for(int i = 0; i < hmKeys.length; i++)
{
String key = (String)hmKeys[i];
System.out.print(key);
System.out.print(" - ");
System.out.println((String)hm.get(key));
}
}
}


/**
run:java HashMapTest
output:
null
null
111
null
333
HashMap size : 3
ccc - null
bbb - 222
aaa - 444

List example

import java.util.List ;
import java.util.Vector ;

public class A {

public static void main(String[] args) {
A a = new A() ;
List b = a.getSchools() ;

// get values
for( int i = 0 ; i < b.size() ; i++ ){
String str = (String)b.get(i) ;
System.out.println("["+i+"]:"+str) ;
}

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

// add the value as the last position
b.add("SchoolName4") ;
b.add("SchoolName5") ;

// get values
for( int i = 0 ; i < b.size() ; i++ ){
String str = (String)b.get(i) ;
System.out.println("["+i+"]:"+str) ;
}

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

// insert value to 3 position
b.add(2, "SchoolName6") ;

// get values
for( int i = 0 ; i < b.size() ; i++ ){
String str = (String)b.get(i) ;
System.out.println("["+i+"]:"+str) ;
}


}

private List getSchools() {

Vector v = new Vector() ;
v.add("SchoolName1") ;
v.add("SchoolName2") ;
v.add("SchoolName3") ;
return (List)v ;

}

}