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‎Java-JsonPojo-Example/README.md‎

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# Java JsonPojo Examples
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## 1. Import source code into Eclipse
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### 1. Import source code into Eclipse
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Menu **File –> Import –> Maven –> Existing Maven Projects**
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Browse to your source code location
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Click **Finish** button to finish the importing
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## 2. Run the example
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### 2. Run the example
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Open the **JsonPojoUtils.java**
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Open the GsonTest.java and JacksonTest.java
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**Right click -> Run As -> Java Application** or use the shortcut: **Alt+Shift+x, j** to start the main method
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Source code are described in **[Convert Java Objects To JSON And Vice Versa](http://howtoprogram.xyz/2016/07/01/convert-java-objects-json-vice-versa/)**
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**Right click -> Run As -> Java Application** or use the shortcut: **Alt+Shift+x, t** to start the JUnit test methods.
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Source code are described in [Convert Java Objects To JSON And Vice Versa With Jackson and Gson](http://howtoprogram.xyz/2016/07/01/convert-java-objects-json-vice-versa/)
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## Related articles
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### Related articles
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### [Simple Java REST Client Using java.net.URL package](http://howtoprogram.xyz/2016/07/02/simple-java-rest-client-using-java-net-url-package)
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[Simple Java REST Client Using java.net.URL package](http://howtoprogram.xyz/2016/07/02/simple-java-rest-client-using-java-net-url-package)
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### [Java REST Client Using Spring RestTemplate](http://howtoprogram.xyz/2016/07/03/java-rest-client-using-spring-resttemplate/)
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[Java REST Client Using Spring RestTemplate](http://howtoprogram.xyz/2016/07/03/java-rest-client-using-spring-resttemplate/)
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### [Java REST Client Using Apache Httpcomponents](http://howtoprogram.xyz/2016/07/04/java-rest-client-using-apache-httpcomponents/)
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[Java REST Client Using Jersey Client](http://howtoprogram.xyz/2016/07/05/java-rest-client-using-jersey-client/)
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### [Java REST Client Using Jersey Client](http://howtoprogram.xyz/2016/07/05/java-rest-client-using-jersey-client/)
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[Java REST Client Using Resteasy Client](http://howtoprogram.xyz/2016/07/12/java-rest-client-using-resteasy-client/)
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### [Java REST Client Using Resteasy Client](http://howtoprogram.xyz/2016/07/12/java-rest-client-using-resteasy-client/)
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[Java REST Client Using Resteasy Client Proxy Framework](http://howtoprogram.xyz/2016/07/13/java-rest-client-using-resteasy-client-proxy-framework/)
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### [Java REST Client Using Resteasy Client Proxy Framework](http://howtoprogram.xyz/2016/07/13/java-rest-client-using-resteasy-client-proxy-framework/)
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[Java REST Client Using Apache CXF Proxy based API](http://howtoprogram.xyz/2016/07/15/java-rest-client-using-apache-cxf-proxy-based-api/)
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### [Java REST Client Using Apache CXF Proxy based API](http://howtoprogram.xyz/2016/07/15/java-rest-client-using-apache-cxf-proxy-based-api/)
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[Java REST Client Using Netflix Feign](http://howtoprogram.xyz/2016/07/18/java-rest-client-using-netflix-feign/)
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### [Java REST Client Using Netflix Feign](http://howtoprogram.xyz/2016/07/18/java-rest-client-using-netflix-feign/)
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### [Java REST Client Using Unirest Java API](http://howtoprogram.xyz/2016/07/27/java-rest-client-using-unirest-java-api/)
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[Java REST Client Using Unirest Java API](http://howtoprogram.xyz/2016/07/27/java-rest-client-using-unirest-java-api/)

‎Java-JsonPojo-Example/pom.xml‎

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<version>0.0.1-SNAPSHOT</version>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<java.version>1.8</java.version>
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<junit.version>4.12</junit.version>
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<junit.jupiter.version>5.0.0</junit.jupiter.version>
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<junit.vintage.version>${junit.version}.0</junit.vintage.version>
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<junit.jupiter.version>5.0.0</junit.jupiter.version>
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<junit.platform.version>1.0.0</junit.platform.version>
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</properties>
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<dependencies>
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<artifactId>jackson-databind</artifactId>
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<version>2.7.5</version>
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</dependency>
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<dependency>
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<groupId>com.google.code.gson</groupId>
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<artifactId>gson</artifactId>
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<version>2.8.1</version>
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<scope>compile</scope>
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</dependency>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter-engine</artifactId>
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<version>${junit.jupiter.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>${junit.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.junit.platform</groupId>
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<artifactId>junit-platform-runner</artifactId>
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<version>${junit.platform.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.junit.vintage</groupId>
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<artifactId>junit-vintage-engine</artifactId>
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<version>${junit.vintage.version}</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.7.0</version>
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<configuration>
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<source>${java.version}</source>
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<target>${java.version}</target>
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</configuration>
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</plugin>
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<plugin>
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<artifactId>maven-surefire-plugin</artifactId>
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<version>2.19.1</version>
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<configuration>
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<includes>
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<include>**/Test*.java</include>
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<include>**/*Test.java</include>
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<include>**/*Tests.java</include>
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<include>**/*TestCase.java</include>
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</includes>
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</configuration>
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<dependencies>
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<dependency>
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<groupId>org.junit.platform</groupId>
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<artifactId>junit-platform-surefire-provider</artifactId>
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<version>${junit.platform.version}</version>
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</dependency>
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</dependencies>
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</plugin>
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</plugins>
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</build>
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</project>

‎Java-JsonPojo-Example/src/test/java/com/howtoprogram/gson/GsonTest.java‎

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package com.howtoprogram.gson;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import org.junit.jupiter.api.Test;
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import com.google.gson.Gson;
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import com.google.gson.GsonBuilder;
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import com.howtoprogram.jsonpojo.Book;
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public class GsonTest {
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@Test
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public void testConvertOjectToJsonTest() {
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Book milkHoneyBook = new Book(1000L, "Milk and Honey", "Rupi Kaur");
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Gson gson = new GsonBuilder().setPrettyPrinting().create();
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String json = gson.toJson(milkHoneyBook);
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assertTrue(json.contains("Milk and Honey"));
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System.out.print(json);
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}
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@Test
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public void testConvertListToJsonTest() {
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Book sfBook = new Book(1001L, "StrengthsFinder 2.0", "Tom Rath");
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Book pHBook = new Book(1002L, "The Power of Habit", "Charles Duhigg");
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List<Book> books = new ArrayList<Book>();
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books.add(sfBook);
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books.add(pHBook);
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// Converts the list to JSON
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Gson gson = new GsonBuilder().setPrettyPrinting().create();
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String json = gson.toJson(books);
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assertTrue(json.contains("StrengthsFinder 2.0"));
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assertTrue(json.contains("The Power of Habit"));
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System.out.println(json);
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}
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@Test
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public void testConvertSetToJsonTest() {
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Book litteFireBook = new Book(1001L, "Little Fires Everywhere", "Celeste Ng");
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Book leoDaVinciBook = new Book(1002L, "Leonardo da Vinci", "Walter Isaacson");
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Set<Book> books = new HashSet<Book>();
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books.add(litteFireBook);
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books.add(leoDaVinciBook);
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// Converts the set to JSON
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Gson gson = new GsonBuilder().setPrettyPrinting().create();
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String json = gson.toJson(books);
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assertTrue(json.contains("Little Fires Everywhere"));
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assertTrue(json.contains("Leonardo da Vinci"));
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System.out.println(json);
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}
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@Test
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public void testConvertMapToJsonTest() {
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Book eoBook = new Book(1l, "Extreme Ownership", "Jocko Willink");
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Book lopBook = new Book(2l, "The 48 Laws of Power", "Robert Greene");
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Map<Long, Book> booksMap = new HashMap<Long, Book>();
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booksMap.put(eoBook.getId(), eoBook);
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booksMap.put(lopBook.getId(), lopBook);
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Gson gson = new GsonBuilder().setPrettyPrinting().create();
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String json = gson.toJson(booksMap);
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assertTrue(json.contains("Extreme Ownership"));
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assertTrue(json.contains("The 48 Laws of Power"));
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System.out.println(json);
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}
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}

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