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Apache HTTPClient Tutorial to invoke RESTFul service

Apache HttpClient to invoke a RESTful Web Service. This is a GET request, and in the next post will extend this to use an HTTP POST with basic authentication.

Step 1: Create a Maven project say “httpRestClient”. Just press enter for all the prompts.

…

Apache POI reading a xlsx file tutorial

Apache POI is a popular API that allows programmers to create, modify, and display MS Office files using Java programs. This tutorial shows how to read a xlsx file using Apache POI.

Difference between HSSF and XSSF?

HSSF is the POI Project’s pure Java implementation of the Excel ’97(-2007) file format.

…

Apache POI writing to a xlsx file tutorial

This extends the tutorial Apache POI reading an xlsx file tutorial.

Step 1: The “WriteToExcelFile” Java code.



package com.mytutorial;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class WriteToExcelFile {

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

        List<Employee> employees = new ArrayList<Employee>();
        employees.add(new Employee("P-123", "John", 24));
        employees.add(new Employee("C-456", "Peter", 36));

        // create work book and sheets
        XSSFWorkbook workBook = new XSSFWorkbook();
        XSSFSheet sheet = workBook.createSheet("simple sheet");

        // create rows and columns
        Row rowHeader = sheet.createRow(0);
        rowHeader.createCell(0).setCellValue("Employee NO");
        rowHeader.createCell(1).setCellValue("Employe Name");
        rowHeader.createCell(2).setCellValue("Employee Age");

        int rowNum = 1; // header is already created
        for (Employee emp : employees) {
            Row rowDetail = sheet.createRow(rowNum);
            rowDetail.createCell(0).setCellValue(emp.getId());
            rowDetail.createCell(1).setCellValue(emp.getName());
            rowDetail.createCell(2).setCellValue(emp.getAge());
            ++rowNum;
        }

        FileOutputStream fos = null;

        try {
            fos = new FileOutputStream(new File("C:\\temp\\employee-out.xlsx"));
            workBook.write(fos);
        }

        finally {
            fos.close();
        }

    }

    // to store data
    static class Employee {

        private String id;
        private String name;
        private int age;

        public Employee(String id, String name, int age) {
            this.id = id;
            this.name = name;
            this.age = age;
        }

        public String getId() {
            return id;
        }

        public void setId(String id) {
            this.id = id;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public int getAge() {
            return age;
        }

        public void setAge(int age) {
            this.age = age;
        }

        @Override
        public String toString() {
            return "Employee [id=" + id + ", name=" + name + ", age=" + age + "]";
        }
    }
}

package com.mytutorial;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import org.apache.poi.ss.usermodel.Row;

import org.apache.poi.xssf.usermodel.XSSFSheet;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class WriteToExcelFile {

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

List<Employee> employees = new ArrayList<Employee>();

employees.add(new Employee("P-123", "John", 24));

employees.add(new Employee("C-456", "Peter", 36));

// create work book and sheets

XSSFWorkbook workBook = new XSSFWorkbook();

XSSFSheet sheet = workBook.createSheet("simple sheet");

// create rows and columns

Row rowHeader = sheet.createRow(0);

rowHeader.createCell(0).setCellValue("Employee NO");

rowHeader.createCell(1).setCellValue("Employe Name");

rowHeader.createCell(2).setCellValue("Employee Age");

int rowNum = 1; // header is already created

for (Employee emp : employees) {

Row rowDetail = sheet.createRow(rowNum);

rowDetail.createCell(0).setCellValue(emp.getId());

rowDetail.createCell(1).setCellValue(emp.getName());

rowDetail.createCell(2).setCellValue(emp.getAge());

++rowNum;

}

FileOutputStream fos = null;

try {

fos = new FileOutputStream(new File("C:\\temp\\employee-out.xlsx"));

workBook.write(fos);

}

finally {

fos.close();

}

// to store data

static class Employee {

private String id;

private String name;

private int age;

public Employee(String id, String name, int age) {

this.id = id;

this.name = name;

this.age = age;

}

public String getId() {

return id;

}

public void setId(String id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

@Override

public String toString() {

return "Employee [id=" + id + ", name=" + name + ", age=" + age + "]";

}

The xlsx file “employee-out.xlsx” will be created without any formatting.

Step 2: Adding styles

1) The columns are auto sized.

…

Apache POI writing to xlsx with styles

This extends the previous tutorial of Apache POI writing to an excel file by using a blank template employee-blank.xlsx file to be filled with data. The blank xlsx brings in the style and labels.

Step 1: employee-template.xlsx

Step 2: writing to xlsx file using poi

package com.mytutorial;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import org.apache.poi.ss.usermodel.BorderStyle;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.xssf.usermodel.XSSFCellStyle;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class WriteToExcelFile
{
    
    public static void main(String[] args) throws IOException
    {
        
        List<Employee> employees = new ArrayList<Employee>();
        employees.add(new Employee("P-123", "John", 24));
        employees.add(new Employee("C-456", "Peter", 36));
        
        InputStream is = Thread.currentThread().getContextClassLoader()
                .getResourceAsStream("com/mytutorial/employee-blank.xlsx");
        XSSFWorkbook workBook = new XSSFWorkbook(is);
        
        Sheet sheet = workBook.getSheet("Employees");
        
        //Font
        Font defaultFont = workBook.createFont();
        defaultFont.setFontHeightInPoints((short) 12);
        
        //Style
        XSSFCellStyle style = workBook.createCellStyle();
        style.setAlignment(CellStyle.ALIGN_CENTER);
        style.setBorderBottom(BorderStyle.THIN);
        style.setBorderLeft(BorderStyle.THIN);
        style.setBorderRight(BorderStyle.THIN);
        style.setBorderTop(BorderStyle.THIN);
        style.setWrapText(true);
        style.setFont(defaultFont);
        
        
        //cell values
        int rowNum = 1; // header is already created
        for (Employee emp : employees)
        {
            Row rowDetail = sheet.createRow(rowNum);
            Cell col1 = rowDetail.createCell(0);
            col1.setCellValue(emp.getId());
            col1.setCellStyle(style);
            
            Cell col2 = rowDetail.createCell(1);
            col2.setCellValue(emp.getName());
            col2.setCellStyle(style);
            
            Cell col3 = rowDetail.createCell(2);
            col3.setCellValue(emp.getAge());
            col3.setCellStyle(style);
            
            ++rowNum;
        }
        
        FileOutputStream fos = null;
        
        try
        {
            fos = new FileOutputStream(new File("C:\\temp\\employee-out.xlsx"));
            workBook.write(fos);
        }
        
        finally
        {
            fos.close();
            
        }
        
    }
    
    // to store data
    static class Employee
    {
        
        private String id;
        private String name;
        private int age;
        
        public Employee(String id, String name, int age)
        {
            this.id = id;
            this.name = name;
            this.age = age;
        }
        
        public String getId()
        {
            return id;
        }
        
        public void setId(String id)
        {
            this.id = id;
        }
        
        public String getName()
        {
            return name;
        }
        
        public void setName(String name)
        {
            this.name = name;
        }
        
        public int getAge()
        {
            return age;
        }
        
        public void setAge(int age)
        {
            this.age = age;
        }
        
        @Override
        public String toString()
        {
            return "Employee [id=" + id + ", name=" + name + ", age=" + age + "]";
        }   
    } 
}

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package com.mytutorial;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.util.ArrayList;

import java.util.List;

import org.apache.poi.ss.usermodel.BorderStyle;

import org.apache.poi.ss.usermodel.Cell;

import org.apache.poi.ss.usermodel.CellStyle;

import org.apache.poi.ss.usermodel.Font;

import org.apache.poi.ss.usermodel.Row;

import org.apache.poi.ss.usermodel.Sheet;

import org.apache.poi.xssf.usermodel.XSSFCellStyle;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class WriteToExcelFile

{

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

{

List<Employee> employees = new ArrayList<Employee>();

employees.add(new Employee("P-123", "John", 24));

employees.add(new Employee("C-456", "Peter", 36));

InputStream is = Thread.currentThread().getContextClassLoader()

.getResourceAsStream("com/mytutorial/employee-blank.xlsx");

XSSFWorkbook workBook = new XSSFWorkbook(is);

Sheet sheet = workBook.getSheet("Employees");

//Font

Font defaultFont = workBook.createFont();

defaultFont.setFontHeightInPoints((short) 12);

//Style

XSSFCellStyle style = workBook.createCellStyle();

style.setAlignment(CellStyle.ALIGN_CENTER);

style.setBorderBottom(BorderStyle.THIN);

style.setBorderLeft(BorderStyle.THIN);

style.setBorderRight(BorderStyle.THIN);

style.setBorderTop(BorderStyle.THIN);

style.setWrapText(true);

style.setFont(defaultFont);

//cell values

int rowNum = 1; // header is already created

for (Employee emp : employees)

{

Row rowDetail = sheet.createRow(rowNum);

Cell col1 = rowDetail.createCell(0);

col1.setCellValue(emp.getId());

col1.setCellStyle(style);

Cell col2 = rowDetail.createCell(1);

col2.setCellValue(emp.getName());

col2.setCellStyle(style);

Cell col3 = rowDetail.createCell(2);

col3.setCellValue(emp.getAge());

col3.setCellStyle(style);

++rowNum;

}

FileOutputStream fos = null;

try

{

fos = new FileOutputStream(new File("C:\\temp\\employee-out.xlsx"));

workBook.write(fos);

}

finally

{

fos.close();

}

// to store data

static class Employee

{

private String id;

private String name;

private int age;

public Employee(String id, String name, int age)

{

this.id = id;

this.name = name;

this.age = age;

}

public String getId()

{

return id;

}

public void setId(String id)

{

this.id = id;

}

public String getName()

{

return name;

}

public void setName(String name)

{

this.name = name;

}

public int getAge()

{

return age;

}

public void setAge(int age)

{

this.age = age;

}

@Override

public String toString()

{

return "Employee [id=" + id + ", name=" + name + ", age=" + age + "]";

}

Step 3: employee-out.xlsx

…

Auditing database tables Oracle tutorial

Triggers give you control just before data is changed and just after the data is changed. This allows for: 1) Auditing tables for changes like update, insert, and delete. 2) Data validation and column formatting before and after inserts into database. Q. … Read more ›...

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Basic Apache Camel and Spring tutorial

The Apache camel tutorial below creates a route to poll the c:/temp/simple folder every minute (i.e. 60000 milliseconds) for files with patterns like test1.csv, test2.csv, etc. These files are then zipped and copied to the archive folder under c:/temp/simple.

Step 1: Define the Apache camel and spring libraries required.

…

Basic Spring batch tutorial with Maven and Eclipse.

Batch jobs with Spring batch framework is very common and popular. This tutorial assumes that

1) You have set up you Java, Maven, and Eclipse

Once you have followed the following steps, you should have a project structure as shown below.

Step 1: Create a new Maven project with the command shown below.

…

BeanIO Java tutorial

BeanIO is an open source Java framework for marshaling and marshaling Java beans from a flat file, stream, or simple String object. It is very powerful with support for XML, CSV, delimited and fixed length stream formats, Object binding, filed validation, integration with spring-batch, etc. Here is a basic tutorial to get started.

…

Before running a Spark job on a YARN cluster in Cloudera and about the Spark history server

Problem: When you run a Spark job via “spark-submit” command on a “YARN” cluster as shown below in a terminal,


-bash-4.1$ spark-submit --class com.mytutorial.SparkSimpleRdd --master yarn --deploy-mode cluster /home/cloudera/projects/simple-spark/target/simple-spark-1.0-SNAPSHOT.jar

-bash-4.1$ spark-submit --class com.mytutorial.SparkSimpleRdd --master yarn --deploy-mode cluster /home/cloudera/projects/simple-spark/target/simple-spark-1.0-SNAPSHOT.jar

It creates a folder and files in HDFS under


/user/spark/applicationHistory/

/user/spark/applicationHistory/

The files will be named with “application ids” like “application_1510971789108_0015”. … Read more ›...

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CDI annotations @Named and @Inject Dependency Injection in Spring 3.0 Tutorial

In Spring 3.0 the support for the CDI annotations @Named and @Inject are provided.

1) @Inject instead of Spring’s @Autowired to inject a bean.
2) @Named instead of Spring’s @Component to declare a bean.

Step 1: Create a simple Maven project.

…

Checkstyle & Maven Tutorial

Step 1: The pom.xml with the checkstyle plugin and properties.

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.mytutorial</groupId>
    <artifactId>simpleSpringRestWeb</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>simpleSpringRestWeb</name>
    <url>http://maven.apache.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        //...
        <javac.src.version>1.7</javac.src.version>
        <javac.target.version>1.7</javac.target.version>
        <test.coverage.rate>100</test.coverage.rate>
        <cobertura.skip>false</cobertura.skip>

        <checkstyle.failOnError>true</checkstyle.failOnError>
        <checkstyle.consoleOutput>true</checkstyle.consoleOutput>
    </properties>

   //...	
   <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-checkstyle-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>check</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <failsOnError>${checkstyle.failOnError}</failsOnError>
                    <consoleOutput>${checkstyle.consoleOutput}</consoleOutput>
                    <configLocation>src/main/resources/checkstyle/myapp-checks.xml</configLocation>
                    <suppressionsLocation>src/main/resources/checkstyle/myapp-suppressions.xml</suppressionsLocation>
                    <suppressionsFileExpression>checkstyle.suppressions.file.tag</suppressionsFileExpression>
                    <propertyExpansion>checkstyle_config_dir=checkstyle</propertyExpansion>
                    <propertyExpansion>checkstyle.suppressions.file=${project.build.directory}/checkstyle-suppressions.xml</propertyExpansion>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

<groupId>com.mytutorial</groupId>

<artifactId>simpleSpringRestWeb</artifactId>

<version>1.0-SNAPSHOT</version>

<name>simpleSpringRestWeb</name>

<url>http://maven.apache.org</url>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

//...

<javac.src.version>1.7</javac.src.version>

<javac.target.version>1.7</javac.target.version>

<test.coverage.rate>100</test.coverage.rate>

<cobertura.skip>false</cobertura.skip>

<checkstyle.failOnError>true</checkstyle.failOnError>

<checkstyle.consoleOutput>true</checkstyle.consoleOutput>

</properties>

//...

<build>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-checkstyle-plugin</artifactId>

<goals>

<goal>check</goal>

</goals>

</execution>

</executions>

<failsOnError>${checkstyle.failOnError}</failsOnError>

<consoleOutput>${checkstyle.consoleOutput}</consoleOutput>

<configLocation>src/main/resources/checkstyle/myapp-checks.xml</configLocation>

<suppressionsLocation>src/main/resources/checkstyle/myapp-suppressions.xml</suppressionsLocation>

<suppressionsFileExpression>checkstyle.suppressions.file.tag</suppressionsFileExpression>

<propertyExpansion>checkstyle_config_dir=checkstyle</propertyExpansion>

<propertyExpansion>checkstyle.suppressions.file=${project.build.directory}/checkstyle-suppressions.xml</propertyExpansion>

</configuration>

</plugin>

</plugins>

</build>

</project>

Step 2: The checkstyle files that define the rules.

src/main/resources/checkstyle/myapp-checks.xml

<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
        "-//Puppy Crawl//DTD Check Configuration 1.1//EN"
        "http://www.puppycrawl.com/dtds/configuration_1_1.dtd">

<module name="Checker">
    <module name="Translation"/>
    <module name="SuppressionCommentFilter"/>

    <module name="TreeWalker">
        <!-- Check use of Spaces and not TABs (4 spaces) -->
        <property name="tabWidth" value="4" />
        <module name="GenericWhitespace" />
        <module name="CyclomaticComplexity">
            <property name="max" value="15"/>
        </module>
        <module name="ConstantName"/>
        <module name="LocalFinalVariableName"/>
        <module name="LocalVariableName"/>
        <module name="MemberName">
            <property name="format" value="(^serial|^[a-z][a-zA-Z0-9]*$)"/>
        </module>
        <module name="MethodName"/>
        <module name="PackageName"/>
        <module name="ParameterName"/>
        <module name="StaticVariableName">
            <property name="format" value="(^serial|^[a-z][a-zA-Z0-9]*$)"/>
        </module>
        <module name="TypeName"/>
        <module name="MutableException"/>
        <module name="AvoidStarImport"/>
        <module name="IllegalImport"/>
        <module name="RedundantImport"/>
        <module name="UnusedImports"/>
        <module name="LineLength">
            <property name="max" value="130"/>
        </module>
        <module name="ParameterNumber">
            <property name="max" value="8"/>
        </module>
        <module name="EmptyForIteratorPad"/>
        <module name="NoWhitespaceAfter"/>
        <module name="NoWhitespaceBefore"/>
        <module name="OperatorWrap"/>
        <module name="ParenPad"/>
        <module name="TypecastParenPad"/>
        <module name="WhitespaceAfter">
            <property name="tokens" value="COMMA, SEMI"/>
        </module>
        <module name="WhitespaceAround">
            <property name="tokens" value="ASSIGN, BAND, BAND_ASSIGN, BOR, BOR_ASSIGN, BSR, BSR_ASSIGN, BXOR, BXOR_ASSIGN, COLON, DIV, DIV_ASSIGN, EQUAL, GE, GT, LAND, LE, LITERAL_ASSERT, LITERAL_CATCH, LITERAL_DO, LITERAL_ELSE, LITERAL_FINALLY, LITERAL_FOR, LITERAL_IF, LITERAL_RETURN, LITERAL_SYNCHRONIZED, LITERAL_TRY, LITERAL_WHILE, LOR, LT, MINUS, MINUS_ASSIGN, MOD, MOD_ASSIGN, NOT_EQUAL, PLUS, PLUS_ASSIGN, QUESTION, SL, SLIST, SL_ASSIGN, SR, SR_ASSIGN, STAR, STAR_ASSIGN, TYPE_EXTENSION_AND"/>
        </module>
        <module name="ModifierOrder"/>
        <module name="RedundantModifier"/>
        <module name="AvoidNestedBlocks"/>
        <module name="EmptyBlock"/>
        <module name="LeftCurly"/>
        <module name="NeedBraces">
            <property name="tokens" value="LITERAL_DO, LITERAL_FOR, LITERAL_WHILE"/>
        </module>
        <module name="RightCurly"/>

        <!-- This check has been removed from Checkstyle 5.6 -->
        <!--<module name="DoubleCheckedLocking"/>-->

        <module name="EmptyStatement"/>
        <module name="IllegalInstantiation"/>
        <module name="InnerAssignment"/>
        <module name="MissingSwitchDefault"/>

        <!-- RedundantThrows was removed with version 6.2 -->
        <!--<module name="RedundantThrows"/>-->

        <module name="SimplifyBooleanExpression"/>
        <module name="SimplifyBooleanReturn"/>
        <module name="SuperClone"/>
        <module name="FinalClass"/>
        <module name="HideUtilityClassConstructor"/>
        <module name="InterfaceIsType"/>
        <module name="VisibilityModifier">
            <property name="protectedAllowed" value="true"/>
        </module>
        <module name="ArrayTypeStyle"/>
        <module name="TodoComment"/>
        <module name="UpperEll"/>
        <module name="FileContentsHolder"/>
        <!-- Checks correct indentation of Java Code. -->
        <module name="Indentation">
           <!-- how many spaces to use for new indentation level -->
            <property name="basicOffset" value="4" />
           <!-- how far brace should be indented when on next line -->
            <property name="braceAdjustment" value="0" />
           <!-- how much to indent a case label -->
            <property name="caseIndent" value="4" />
        </module>

        <!-- Checks for Javadoc comments in public methods/variables only -->
        <module name="JavadocMethod">
            <property name="scope" value="public" />
            <property name="allowMissingPropertyJavadoc" value="true" />
        </module>
        <module name="JavadocType">
            <property name="scope" value="public" />
            <property name="allowUnknownTags" value="true" />
        </module>
        <module name="JavadocVariable">
            <property name="scope" value="public" />
        </module>
        <!-- all JavaDoc must have the right style, regardless of the scope -->
        <module name="JavadocStyle">
            <property name="scope" value="public" />
        </module>
    </module>

    <!-- No TAB characters in the source code -->
    <module name="FileTabCharacter">
        <property name="eachLine" value="true" />
        <property name="fileExtensions" value="java,properties,xml,wsdl" />
    </module>

    <module name="RegexpMultiline">
        <property name="id" value="consoleOutput" />
        <property name="format" value="System\.(out)|(err)\.print(ln)?\(" />
        <property name="message" value="Writing to System.out and System.err not allowed - use logger instead" />
    </module>
    <module name="RegexpMultiline">
        <property name="format" value="\.printStackTrace\(\s*\)" />
        <property name="message" value="Calling printStackTrace on an exception is not allowed - use logger instead" />
    </module>
    <module name="RegexpMultiline">
        <property name="format" value="java\.util\.(Date|Calendar)"/>
        <property name="message" value="DO NOT USE java.util.Date or java.util.Calendar! Use Joda time instead!"/>
    </module>
    <module name="RegexpMultiline">
        <property name="format" value="(System|Runtime\.getRuntime\(\))\.exit"/>
        <property name="message" value="Should not exit the JVM."/>
    </module>

</module>

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<?xml version="1.0"?>

<!DOCTYPE module PUBLIC

"-//Puppy Crawl//DTD Check Configuration 1.1//EN"

"http://www.puppycrawl.com/dtds/configuration_1_1.dtd">

</module>

</module>

</module>

</module>

</module>

</module>

</module>

</module>

</module>

</module>

</module>

</module>

</module>

</module>

</module>

</module>

</module>

</module>

</module>

src/main/resources/checkstyle/myapp-suppressions.xml

<?xml version="1.0"?>
<!DOCTYPE suppressions PUBLIC
    "-//Puppy Crawl//DTD Suppressions 1.1//EN"
    "http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">

<suppressions>
  <!--
    Turn off all checks for Generated and Test code.
  -->

  <!-- Suppressions for test code -->
  <suppress checks="IllegalCatch" files="[/\\]test[/\\]"/>
  <suppress checks="ImportControl" files="[/\\]test[/\\]"/>
  <suppress checks="MethodLength" files="[/\\]test[/\\]"/>
  <suppress checks="MethodName" files="[/\\]test[/\\]"/>
  <suppress checks="TypeName" files="[/\\]test[/\\]"/>
  <suppress checks="MagicNumber" files="[/\\]test[/\\]"/>
  <suppress checks="JavadocMethod" files="[/\\]test[/\\]"/>
  <suppress checks="JavadocStyle" files="[/\\]test[/\\]"/>
  <suppress checks="JavadocType" files="[/\\]test[/\\]"/>
  <suppress checks="JavadocVariable" files="[/\\]test[/\\]"/>
  <suppress checks="IllegalThrows" files="[/\\]test[/\\]"/>
  <suppress checks="IllegalInstantiation" files="[/\\]test[/\\]"/>
  <suppress checks="ParameterNumberCheck" files="[/\\]test[/\\]"/>
  <suppress id="warningCyclomaticComplexity" files="[/\\]test[/\\]"/>
  <suppress id="warningFileLength" files="[/\\]test[/\\]"/>

  <!-- don't check generated code, this to work on Unix (/) and Windows (\) -->
  <suppress checks="." files="[/\\]generated-sources[/\\]"/>
  <!-- End of test code suppressions -->

</suppressions>

<?xml version="1.0"?>

<!DOCTYPE suppressions PUBLIC

"-//Puppy Crawl//DTD Suppressions 1.1//EN"

"http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">

<!--

Turn off all checks for Generated and Test code.

-->

</suppressions>

Step 3: Running via mvn command.

…

Converting POJOs to Pentaho meta objects and then passing to a Kettle transformation

This extends the tutorials on Pentaho DI 1) Part 1: Pentaho with user defined Java transformer tutorial. 2) Part 2: Invoking a Pentaho DI (i.e. Kettle) transformation from Java. 2) Part 3: Passing Pentaho DI (i.e. … Read more ›...

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Creating a Maven profile to compile using a different JDK version tutorial

Profiles are very handy in maven to use different JDK versions, include different files for different environments, etc.

Step 1: Say you have a pom.xml file using Java 7 to compile.

<properties> 
    <javac.src.version>1.7</javac.src.version>
    <javac.target.version>1.7</javac.target.version>
</properties> 

<plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>3.2</version>
      <configuration>
           <source>${javac.src.version}</source>
           <target>${javac.target.version}</target>
       </configuration>
</plugin>

<javac.src.version>1.7</javac.src.version>

<javac.target.version>1.7</javac.target.version>

</properties>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-compiler-plugin</artifactId>

<source>${javac.src.version}</source>

<target>${javac.target.version}</target>

</configuration>

</plugin>

Step 2: Say now you want to compile using Java 1.5.

…

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