Convert ArrayList to JsonArray

Java code to convert a data list into json array
 
import java.util.ArrayList;
import java.util.List;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonArray;

class Data{
    int id;
    String name;
   
    public Data(int id, String name){
        this.id = id;
        this.name = name;
    }
   
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
}

public class LISTTEST {
    public static void main(String[] args) {
   
    List dataList = new ArrayList<Data>();
    dataList.add(new Data(1,"One"));
    dataList.add(new Data(2,"Two"));
   
    Gson gson = new GsonBuilder().create();
    JsonArray myCustomArray = gson.toJsonTree(dataList).getAsJsonArray();
   
    System.out.println(myCustomArray);
   
    }
}

OUTPUT

[{"id":1,"name":"One"},{"id":2,"name":"Two"}]

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STRUTS2 VISITOR VALIDATOR COMPLETE EXAMLE

 

Login.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Login</title>
<style>
    .errorMessage{
        color:red;
        font-size: 11px;
        text-align:right;
    }
</style>
</head>
<body>
    <center>
        <s:form action="loginAction" method="post" validate="true" >
            <s:textfield     name="user[0].username" label="Username"    />
            <s:textfield     name="user[0].password" label="Password"    />
            <s:textfield      name="mobileNumber" label="Mobile Number"    />          
            <s:submit/>
        </s:form>
    </center>
</body>
</html>

LoginAction.java

import java.util.List;

import mod.User;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.validator.annotations.VisitorFieldValidator;

public class LoginAction extends ActionSupport{
   
    private String mobileNumber;
    private List<User> user;
   
    public String getMobileNumber() {
        return mobileNumber;
    }
   
    public void setMobileNumber(String mobileNumber) {
        this.mobileNumber = mobileNumber;
    }
   
    @VisitorFieldValidator(message = "Userssss")
    public List<User> getUser() {
        return user;
    }

    public void setUser(List<User> user) {
        this.user = user;
    }
}
 

LoginAction-validation.xml

 

<!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.2//EN" "http://struts.apache.org/dtds/xwork-validator-1.0.2.dtd">
   
<validators>
   
    <field name="mobileNumber"  >
        <field-validator type="requiredstring" short-circuit="true" >
            <message>Empty Mobile Number !</message>            
        </field-validator>
    </field>
   
</validators> 

User.java

package mod;

public class User {
   
    private String username;
    private String password;
    /**
     * @return the username
     */
    public String getUsername() {
        return username;
    }
    /**
     * @param username the username to set
     */
    public void setUsername(String username) {
        this.username = username;
    }
    /**
     * @return the password
     */
    public String getPassword() {
        return password;
    }
    /**
     * @param password the password to set
     */
   
    public void setPassword(String password) {
        this.password = password;
    }
}
 

welcome.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
    WELCOME TO CUSTOM VALIDATION DEMO PROJECT
</body>
</html>

Thanks

Keep Visiting. Be happy :)

JQuery to count total TD available in particular TR

var totalCells = $(this).parent().find('td').size();

STRUTS2 CUSTOM VALIDATORS DEMO CODE EXAMPLE

GreaterThanZeroValidator.java

import com.opensymphony.xwork2.validator.ValidationException;
import com.opensymphony.xwork2.validator.validators.FieldValidatorSupport;

public class GreaterThanZeroValidator extends FieldValidatorSupport {

    @Override
    public void validate(Object object) throws ValidationException {

String fieldName = getFieldName();
Integer fieldValue = (Integer) getFieldValue(fieldName, object);

if (fieldValue != null && fieldValue <=0 ) {
   addFieldError(fieldName, object);
}  
    }
    
}

Validators.xml (also put all default validator in this file)

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC
        "-//Apache Struts//XWork Validator Definition 1.0//EN"
        "http://struts.apache.org/dtds/xwork-validator-definition-1.0.dtd">

<validators>
    <validator name="required" class="com.opensymphony.xwork2.validator.validators.RequiredFieldValidator"/>
    <validator name="requiredstring" class="com.opensymphony.xwork2.validator.validators.RequiredStringValidator"/>
    <validator name="int" class="com.opensymphony.xwork2.validator.validators.IntRangeFieldValidator"/>
    <validator name="long" class="com.opensymphony.xwork2.validator.validators.LongRangeFieldValidator"/>
    <validator name="short" class="com.opensymphony.xwork2.validator.validators.ShortRangeFieldValidator"/>
    <validator name="double" class="com.opensymphony.xwork2.validator.validators.DoubleRangeFieldValidator"/>
    <validator name="date" class="com.opensymphony.xwork2.validator.validators.DateRangeFieldValidator"/>
    <validator name="expression" class="com.opensymphony.xwork2.validator.validators.ExpressionValidator"/>
    <validator name="fieldexpression" class="com.opensymphony.xwork2.validator.validators.FieldExpressionValidator"/>
    <validator name="email" class="com.opensymphony.xwork2.validator.validators.EmailValidator"/>
    <validator name="url" class="com.opensymphony.xwork2.validator.validators.URLValidator"/>
    <validator name="visitor" class="com.opensymphony.xwork2.validator.validators.VisitorFieldValidator"/>
    <validator name="conversion" class="com.opensymphony.xwork2.validator.validators.ConversionErrorFieldValidator"/>
    <validator name="stringlength" class="com.opensymphony.xwork2.validator.validators.StringLengthFieldValidator"/>
    <validator name="regex" class="com.opensymphony.xwork2.validator.validators.RegexFieldValidator"/>
    <validator name="conditionalvisitor" class="com.opensymphony.xwork2.validator.validators.ConditionalVisitorFieldValidator"/>

    <validator name="greaterThanZero" class="com.validator.GreaterThanZeroValidator" />

</validators>

ABCAction-validation.xml
<!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.2//EN" "http://struts.apache.org/dtds/xwork-validator-1.0.2.dtd">

<validators>

<field name="pkgData.validityPeriod" >
<field-validator type="greaterThanZero" short-circuit="true">
<message>${getText("error.greaterthanzero", {getText("pkg.validityperiod")})}</message>         </field-validator>
<field>

ABCAction.java

public class ABCAction extends ActionSupport implements   ServletRequestAware{

private static final long serialVersionUID = 1L;
private static final String MODULE  = PkgCTRL.class.getSimpleName();
private static final String PACKAGE = " Package ";

private PkgData pkgData = new PkgData();
.......
.......
.......
.......

}

LIBS (keep the required libs only)

validators.xml file location (means it should come in classpath)

helpful link : 

http://struts.apache.org/docs/validation.html#Validation-RegisteringValidators

(read above link content fully with patience )

CSS to center aling text of last and cecond last TD of all rows in a table

td:nth-last-child(-n+2) {        
             text-align: center;

}

CSS to center aling text of last and first TD of all rows in a table

        tr>td:last-child {                       
            text-align: center;
        }
       
        tr>td:first-child {                       
            text-align: center;
        }