An introduction to JAXB
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nguyenminhtuanfit@gmail.com
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.baeldung</groupId>
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<artifactId>jaxb</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<name>jaxb</name>
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<dependencies>
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<dependency>
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<groupId>org.glassfish.jaxb</groupId>
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<artifactId>jaxb-runtime</artifactId>
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<version>${jaxb.version}</version>
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</dependency>
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<dependency>
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<groupId>org.glassfish.jaxb</groupId>
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<artifactId>jaxb-core</artifactId>
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<version>${jaxb.version}</version>
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</dependency>
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<!-- utils -->
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<dependency>
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<groupId>com.sun.istack</groupId>
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<artifactId>istack-commons-runtime</artifactId>
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<version>3.0.2</version>
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</dependency>
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-api</artifactId>
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<version>${org.slf4j.version}</version>
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</dependency>
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<dependency>
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<groupId>ch.qos.logback</groupId>
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<artifactId>logback-classic</artifactId>
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<version>${logback.version}</version>
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</dependency>
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<dependency>
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<groupId>ch.qos.logback</groupId>
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<artifactId>logback-core</artifactId>
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<version>${logback.version}</version>
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</dependency>
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</dependencies>
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<build>
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<finalName>jaxb</finalName>
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<resources>
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<resource>
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<directory>src/main/resources</directory>
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<filtering>true</filtering>
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</resource>
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</resources>
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<pluginManagement>
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<plugins>
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<plugin>
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<groupId>org.eclipse.m2e</groupId>
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<artifactId>lifecycle-mapping</artifactId>
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<version>1.0.0</version>
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<configuration>
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<lifecycleMappingMetadata>
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<pluginExecutions>
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<pluginExecution>
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<pluginExecutionFilter>
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<groupId>org.codehaus.mojo</groupId>
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<artifactId>jaxb2-maven-plugin</artifactId>
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<versionRange>[${jaxb2-maven-plugin.version},)</versionRange>
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<goals>
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<goal>schemagen</goal>
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<goal>xjc</goal>
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</goals>
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</pluginExecutionFilter>
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<action>
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<execute />
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</action>
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</pluginExecution>
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</pluginExecutions>
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</lifecycleMappingMetadata>
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</configuration>
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</plugin>
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</plugins>
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</pluginManagement>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>${maven-compiler-plugin.version}</version>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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<!-- xjc -->
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<plugin>
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<groupId>org.codehaus.mojo</groupId>
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<artifactId>jaxb2-maven-plugin</artifactId>
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<version>${jaxb2-maven-plugin.version}</version>
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<executions>
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<execution>
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<id>xjc</id>
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<goals>
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<goal>xjc</goal>
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</goals>
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</execution>
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</executions>
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<configuration>
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<xjbSources>
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<xjbSource>src/main/resources/global.xjb</xjbSource>
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</xjbSources>
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<sources>
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<source>src/main/resources/user.xsd</source>
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</sources>
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<outputDirectory>${basedir}/src/main/java</outputDirectory>
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<clearOutputDir>false</clearOutputDir>
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</configuration>
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</plugin>
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<!-- schemagen -->
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<!--
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<plugin>
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<groupId>org.codehaus.mojo</groupId>
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<artifactId>jaxb2-maven-plugin</artifactId>
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<version>${jaxb2-maven-plugin.version}</version>
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<executions>
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<execution>
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<id>schemagen</id>
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<goals>
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<goal>schemagen</goal>
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</goals>
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</execution>
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</executions>
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<configuration>
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<sources>
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<source>src/main/java/com/baeldung/jaxb/gen</source>
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</sources>
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<outputDirectory>src/main/resources</outputDirectory>
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<clearOutputDir>false</clearOutputDir>
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<transformSchemas>
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<transformSchema>
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<uri>http://www.baeldung.com/jaxb/gen</uri>
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<toPrefix>user</toPrefix>
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<toFile>gen-schema.xsd</toFile>
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</transformSchema>
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</transformSchemas>
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</configuration>
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</plugin>
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-->
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</plugins>
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</build>
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<properties>
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<!-- jaxb -->
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<jaxb.version>2.2.11</jaxb.version>
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<!-- logging -->
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<org.slf4j.version>1.7.21</org.slf4j.version>
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<logback.version>1.1.7</logback.version>
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<!-- maven plugins -->
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<maven-compiler-plugin.version>3.5.1</maven-compiler-plugin.version>
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<jaxb2-maven-plugin.version>2.3</jaxb2-maven-plugin.version>
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</properties>
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</project>
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package com.baeldung.jaxb;
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import java.util.Date;
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import javax.xml.bind.annotation.XmlAttribute;
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import javax.xml.bind.annotation.XmlElement;
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import javax.xml.bind.annotation.XmlRootElement;
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import javax.xml.bind.annotation.XmlTransient;
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import javax.xml.bind.annotation.XmlType;
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@XmlRootElement(name = "book")
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@XmlType(propOrder = { "id", "name", "date" })
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public class Book {
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private Long id;
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private String name;
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private String author;
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private Date date;
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@XmlAttribute
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public void setId(Long id) {
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this.id = id;
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}
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@XmlElement(name = "title")
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public void setName(String name) {
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this.name = name;
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}
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@XmlTransient
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public void setAuthor(String author) {
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this.author = author;
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}
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public String getName() {
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return name;
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}
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public Date getDate() {
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return date;
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}
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public void setDate(Date date) {
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this.date = date;
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}
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public Long getId() {
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return id;
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}
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public String getAuthor() {
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return author;
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}
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@Override
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public String toString() {
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return "Book [id=" + id + ", name=" + name + ", author=" + author + ", date=" + date + "]";
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}
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}
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package com.baeldung.jaxb;
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import java.text.DateFormat;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import javax.xml.bind.annotation.adapters.XmlAdapter;
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public class DateAdapter extends XmlAdapter<String, Date> {
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private static final ThreadLocal<DateFormat> dateFormat = new ThreadLocal<DateFormat>() {
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@Override
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protected DateFormat initialValue() {
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return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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}
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};
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@Override
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public Date unmarshal(String v) throws Exception {
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return dateFormat.get().parse(v);
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}
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@Override
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public String marshal(Date v) throws Exception {
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return dateFormat.get().format(v);
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}
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}
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package com.baeldung.jaxb;
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import java.io.File;
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import java.io.FileReader;
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import java.io.IOException;
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import java.util.Date;
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import javax.xml.bind.JAXBContext;
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import javax.xml.bind.JAXBException;
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import javax.xml.bind.Marshaller;
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import javax.xml.bind.Unmarshaller;
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public class Main {
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public static void marshal() throws JAXBException, IOException {
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Book book = new Book();
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book.setId(1L);
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book.setName("Book1");
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book.setAuthor("Author1");
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book.setDate(new Date());
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JAXBContext context = JAXBContext.newInstance(Book.class);
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Marshaller marshaller = context.createMarshaller();
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marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
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marshaller.marshal(book, new File("./book.xml"));
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}
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public static Book unMashal() throws JAXBException, IOException {
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JAXBContext context = JAXBContext.newInstance(Book.class);
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Unmarshaller unmarshaller = context.createUnmarshaller();
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Book book = (Book) unmarshaller.unmarshal(new FileReader("./book.xml"));
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return book;
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}
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public static void main(String[] args) throws JAXBException, IOException {
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marshal();
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Book book = unMashal();
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System.out.println(book.toString());
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}
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}
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<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
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<jaxb:bindings version="2.0" xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
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xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc" xmlns:xs="http://www.w3.org/2001/XMLSchema"
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jaxb:extensionBindingPrefixes="xjc">
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<jaxb:globalBindings>
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<xjc:simple />
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<xjc:serializable uid="-1" />
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<jaxb:javaType name="java.util.Calendar" xmlType="xs:dateTime"
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parseMethod="javax.xml.bind.DatatypeConverter.parseDateTime"
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printMethod="javax.xml.bind.DatatypeConverter.printDateTime" />
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</jaxb:globalBindings>
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</jaxb:bindings>
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<?xml version="1.0" encoding="UTF-8"?>
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<configuration>
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<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
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<layout class="ch.qos.logback.classic.PatternLayout">
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<pattern>%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} - %msg %n</pattern>
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</layout>
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</appender>
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<logger name="com.baeldung.hazelcast" level="INFO" additivity="false">
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<appender-ref ref="STDOUT" />
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</logger>
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<root level="DEBUG">
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<appender-ref ref="STDOUT" />
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</root>
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</configuration>
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<?xml version="1.0" encoding="UTF-8"?>
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<schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.baeldung.com/jaxb/gen"
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xmlns:userns="http://www.baeldung.com/jaxb/gen" elementFormDefault="qualified">
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<element name="userRequest" type="userns:UserRequest"></element>
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<element name="userResponse" type="userns:UserResponse"></element>
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<complexType name="UserRequest">
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<sequence>
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<element name="id" type="int" />
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<element name="name" type="string" />
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</sequence>
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</complexType>
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<complexType name="UserResponse">
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<sequence>
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<element name="id" type="int" />
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<element name="name" type="string" />
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<element name="gender" type="string" />
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<element name="created" type="dateTime" />
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</sequence>
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</complexType>
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</schema>
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