Code commit for BAEL-4992 (#10952)

* code commit for BAEL-4992

* tab/space change for pom.xml

json-2/pom.xml

@@ -14,6 +14,11 @@
     </parent>
 
     <dependencies>
+        <dependency>
+            <groupId>org.jsonschema2pojo</groupId>
+            <artifactId>jsonschema2pojo-core</artifactId>
+            <version>1.1.1</version>
+        </dependency>
         <dependency>
             <groupId>com.jsoniter</groupId>
             <artifactId>jsoniter</artifactId>

json-2/src/main/java/com/baeldung/jsontojavaclass/JsonToJavaClassConversion.java

@@ -0,0 +1,42 @@
+package com.baeldung.jsontojavaclass;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.URL;
+
+import org.jsonschema2pojo.DefaultGenerationConfig;
+import org.jsonschema2pojo.GenerationConfig;
+import org.jsonschema2pojo.Jackson2Annotator;
+import org.jsonschema2pojo.SchemaGenerator;
+import org.jsonschema2pojo.SchemaMapper;
+import org.jsonschema2pojo.SchemaStore;
+import org.jsonschema2pojo.SourceType;
+import org.jsonschema2pojo.rules.RuleFactory;
+
+import com.sun.codemodel.JCodeModel;
+
+public class JsonToJavaClassConversion {
+
+    public Object convertJsonToJavaClass(URL inputJson, File outputJavaClassDirectory, String packageName, String className) throws IOException {
+        JCodeModel jcodeModel = new JCodeModel();
+
+        GenerationConfig config = new DefaultGenerationConfig() {
+            @Override
+            public boolean isGenerateBuilders() {
+                return true;
+            }
+
+            @Override
+            public SourceType getSourceType() {
+                return SourceType.JSON;
+            }
+        };
+
+        SchemaMapper mapper = new SchemaMapper(new RuleFactory(config, new Jackson2Annotator(config), new SchemaStore()), new SchemaGenerator());
+        mapper.generate(jcodeModel, className, packageName, inputJson);
+
+        jcodeModel.build(outputJavaClassDirectory);
+        return mapper;
+    }
+
+}

json-2/src/main/java/com/baeldung/jsontojavaclass/pojo/SamplePojo.java

@@ -0,0 +1,214 @@
+
+package com.baeldung.jsontojavaclass.pojo;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.annotation.Generated;
+
+import com.fasterxml.jackson.annotation.JsonAnyGetter;
+import com.fasterxml.jackson.annotation.JsonAnySetter;
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+
+@JsonInclude(JsonInclude.Include.NON_NULL)
+@JsonPropertyOrder({ "name", "area", "author", "id", "salary", "topics" })
+@Generated("jsonschema2pojo")
+public class SamplePojo {
+
+    @JsonProperty("name")
+    private String name;
+    @JsonProperty("area")
+    private String area;
+    @JsonProperty("author")
+    private String author;
+    @JsonProperty("id")
+    private Integer id;
+    @JsonProperty("salary")
+    private Integer salary;
+    @JsonProperty("topics")
+    private List<String> topics = new ArrayList<String>();
+    @JsonIgnore
+    private Map<String, Object> additionalProperties = new HashMap<String, Object>();
+
+    @JsonProperty("name")
+    public String getName() {
+        return name;
+    }
+
+    @JsonProperty("name")
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public SamplePojo withName(String name) {
+        this.name = name;
+        return this;
+    }
+
+    @JsonProperty("area")
+    public String getArea() {
+        return area;
+    }
+
+    @JsonProperty("area")
+    public void setArea(String area) {
+        this.area = area;
+    }
+
+    public SamplePojo withArea(String area) {
+        this.area = area;
+        return this;
+    }
+
+    @JsonProperty("author")
+    public String getAuthor() {
+        return author;
+    }
+
+    @JsonProperty("author")
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public SamplePojo withAuthor(String author) {
+        this.author = author;
+        return this;
+    }
+
+    @JsonProperty("id")
+    public Integer getId() {
+        return id;
+    }
+
+    @JsonProperty("id")
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public SamplePojo withId(Integer id) {
+        this.id = id;
+        return this;
+    }
+
+    @JsonProperty("salary")
+    public Integer getSalary() {
+        return salary;
+    }
+
+    @JsonProperty("salary")
+    public void setSalary(Integer salary) {
+        this.salary = salary;
+    }
+
+    public SamplePojo withSalary(Integer salary) {
+        this.salary = salary;
+        return this;
+    }
+
+    @JsonProperty("topics")
+    public List<String> getTopics() {
+        return topics;
+    }
+
+    @JsonProperty("topics")
+    public void setTopics(List<String> topics) {
+        this.topics = topics;
+    }
+
+    public SamplePojo withTopics(List<String> topics) {
+        this.topics = topics;
+        return this;
+    }
+
+    @JsonAnyGetter
+    public Map<String, Object> getAdditionalProperties() {
+        return this.additionalProperties;
+    }
+
+    @JsonAnySetter
+    public void setAdditionalProperty(String name, Object value) {
+        this.additionalProperties.put(name, value);
+    }
+
+    public SamplePojo withAdditionalProperty(String name, Object value) {
+        this.additionalProperties.put(name, value);
+        return this;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append(SamplePojo.class.getName())
+            .append('@')
+            .append(Integer.toHexString(System.identityHashCode(this)))
+            .append('[');
+        sb.append("name");
+        sb.append('=');
+        sb.append(((this.name == null) ? "<null>" : this.name));
+        sb.append(',');
+        sb.append("area");
+        sb.append('=');
+        sb.append(((this.area == null) ? "<null>" : this.area));
+        sb.append(',');
+        sb.append("author");
+        sb.append('=');
+        sb.append(((this.author == null) ? "<null>" : this.author));
+        sb.append(',');
+        sb.append("id");
+        sb.append('=');
+        sb.append(((this.id == null) ? "<null>" : this.id));
+        sb.append(',');
+        sb.append("salary");
+        sb.append('=');
+        sb.append(((this.salary == null) ? "<null>" : this.salary));
+        sb.append(',');
+        sb.append("topics");
+        sb.append('=');
+        sb.append(((this.topics == null) ? "<null>" : this.topics));
+        sb.append(',');
+        sb.append("additionalProperties");
+        sb.append('=');
+        sb.append(((this.additionalProperties == null) ? "<null>" : this.additionalProperties));
+        sb.append(',');
+        if (sb.charAt((sb.length() - 1)) == ',') {
+            sb.setCharAt((sb.length() - 1), ']');
+        } else {
+            sb.append(']');
+        }
+        return sb.toString();
+    }
+
+    @Override
+    public int hashCode() {
+        int result = 1;
+        result = ((result * 31) + ((this.area == null) ? 0 : this.area.hashCode()));
+        result = ((result * 31) + ((this.author == null) ? 0 : this.author.hashCode()));
+        result = ((result * 31) + ((this.topics == null) ? 0 : this.topics.hashCode()));
+        result = ((result * 31) + ((this.name == null) ? 0 : this.name.hashCode()));
+        result = ((result * 31) + ((this.id == null) ? 0 : this.id.hashCode()));
+        result = ((result * 31) + ((this.additionalProperties == null) ? 0 : this.additionalProperties.hashCode()));
+        result = ((result * 31) + ((this.salary == null) ? 0 : this.salary.hashCode()));
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (other == this) {
+            return true;
+        }
+        if ((other instanceof SamplePojo) == false) {
+            return false;
+        }
+        SamplePojo rhs = ((SamplePojo) other);
+        return ((((((((this.area == rhs.area) || ((this.area != null) && this.area.equals(rhs.area))) && ((this.author == rhs.author) || ((this.author != null) && this.author.equals(rhs.author))))
+            && ((this.topics == rhs.topics) || ((this.topics != null) && this.topics.equals(rhs.topics)))) && ((this.name == rhs.name) || ((this.name != null) && this.name.equals(rhs.name))))
+            && ((this.id == rhs.id) || ((this.id != null) && this.id.equals(rhs.id)))) && ((this.additionalProperties == rhs.additionalProperties) || ((this.additionalProperties != null) && this.additionalProperties.equals(rhs.additionalProperties))))
+            && ((this.salary == rhs.salary) || ((this.salary != null) && this.salary.equals(rhs.salary))));
+    }
+
+}

json-2/src/test/java/com/baeldung/jsontojavaclass/JsonToJavaClassConversionUnitTest.java

@@ -0,0 +1,38 @@
+package com.baeldung.jsontojavaclass;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.MalformedURLException;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+class JsonToJavaClassConversionUnitTest {
+
+    private JsonToJavaClassConversion jsonToJavaConversion = new JsonToJavaClassConversion();
+
+    @Test
+    void whenProvideInputJSON_thenGenerateJavaClass() throws MalformedURLException, IOException {
+
+        String packageName = "com.baeldung.jsontojavaclass.pojo";
+
+        // load input JSON file
+        String jsonPath = "src/test/resources/";
+        File inputJson = new File(jsonPath + "sample_input.json");
+
+        // create the local directory for generating the Java Class file
+        String outputPath = "src/main/java/";
+        File outputJavaClassDirectory = new File(outputPath);
+        outputJavaClassDirectory.mkdirs();
+
+        String className = "SamplePojo";
+
+        Object object = jsonToJavaConversion.convertJsonToJavaClass(inputJson.toURI()
+            .toURL(), outputJavaClassDirectory, packageName, className);
+        System.out.println(object);
+
+        Assertions.assertNotNull(object);
+
+    }
+
+}

json-2/src/test/resources/sample_input.json

@@ -0,0 +1,13 @@
+{
+	"name": "Baeldung",
+	"area": "tech blogs",
+	"author": "Eugen",
+	"id": 32134,
+	"salary": 70000,
+	"topics": [
+		"java",
+		"kotlin",
+		"cs",
+		"linux"
+	]
+}