The following issues were found

src/test/java/com/alibaba/json/bvt/writeClassName/WriteClassNameTest6.java
6 issues
JUnit 4 tests that execute tests should use the @Test annotation, JUnit 5 tests should use @Test, @RepeatedTest, @TestFactory, @TestTemplate or @ParameterizedTest
Design

Line: 13 

               * Created by wenshao on 14/08/2017.
 */
public class WriteClassNameTest6 extends TestCase {
    public void test_for_writeClassName() throws Exception {
        String json = "{\"@type\":\"java.util.HashMap\",\"@type\":\"com.alibaba.json.bvt.writeClassName.WriteClassNameTest6$Model\",\"id\":1001}";

        Model model = (Model) JSON.parse(json);
        assertNotNull(model);
    }

Reported by PMD.

JUnit assertions should include a message
Design

Line: 17 

                      String json = "{\"@type\":\"java.util.HashMap\",\"@type\":\"com.alibaba.json.bvt.writeClassName.WriteClassNameTest6$Model\",\"id\":1001}";

        Model model = (Model) JSON.parse(json);
        assertNotNull(model);
    }

    public void test_for_writeClassName_1() throws Exception {
        String json = "{\"@type\":\"java.util.HashMap\",\"@type\":\"com.alibaba.json.bvt.writeClassName.WriteClassNameTest6$Model\",\"id\":1001}";

Reported by PMD.

JUnit 4 tests that execute tests should use the @Test annotation, JUnit 5 tests should use @Test, @RepeatedTest, @TestFactory, @TestTemplate or @ParameterizedTest
Design

Line: 20 

                      assertNotNull(model);
    }

    public void test_for_writeClassName_1() throws Exception {
        String json = "{\"@type\":\"java.util.HashMap\",\"@type\":\"com.alibaba.json.bvt.writeClassName.WriteClassNameTest6$Model\",\"id\":1001}";

        Model model = JSON.parseObject(json, Model.class);
        assertNotNull(model);
    }

Reported by PMD.

JUnit assertions should include a message
Design

Line: 24 

                      String json = "{\"@type\":\"java.util.HashMap\",\"@type\":\"com.alibaba.json.bvt.writeClassName.WriteClassNameTest6$Model\",\"id\":1001}";

        Model model = JSON.parseObject(json, Model.class);
        assertNotNull(model);
    }

    @JSONType
    public static class Model {
        public int id;

Reported by PMD.

Avoid unused imports such as 'com.alibaba.fastjson.annotation.JSONField'
Design

Line: 4 

              package com.alibaba.json.bvt.writeClassName;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.annotation.JSONField;
import com.alibaba.fastjson.annotation.JSONType;
import com.alibaba.fastjson.serializer.SerializerFeature;
import junit.framework.TestCase;

/**

Reported by PMD.

Avoid unused imports such as 'com.alibaba.fastjson.serializer.SerializerFeature'
Design

Line: 6 

              import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.annotation.JSONField;
import com.alibaba.fastjson.annotation.JSONType;
import com.alibaba.fastjson.serializer.SerializerFeature;
import junit.framework.TestCase;

/**
 * Created by wenshao on 14/08/2017.
 */

Reported by PMD.

src/test/java/com/alibaba/json/bvt/writeClassName/WriteClassNameTest.java
6 issues
System.out.println is used
Design

Line: 19 

                      A a = new A();
        a.setB(new B());
        String text = JSON.toJSONString(a, SerializerFeature.WriteClassName);
        System.out.println(text);
        Assert.assertEquals("{\"@type\":\"com.alibaba.json.bvt.writeClassName.WriteClassNameTest$A\",\"b\":{}}", text);
        
        A a1 = (A) JSON.parse(text);
        
        Assert.assertNotNull(a1.getB());

Reported by PMD.

JUnit 4 tests that set up tests should use the @Before annotation, JUnit5 tests should use @BeforeEach or @BeforeAll
Design

Line: 11 

              
public class WriteClassNameTest extends TestCase {

    protected void setUp() throws Exception {
        com.alibaba.fastjson.parser.ParserConfig.getGlobalInstance().addAccept(this.getClass().getName() + ".");
    }

    public void test_list() throws Exception {
        A a = new A();

Reported by PMD.

Potential violation of Law of Demeter (static property access)
Design

Line: 12 

              public class WriteClassNameTest extends TestCase {

    protected void setUp() throws Exception {
        com.alibaba.fastjson.parser.ParserConfig.getGlobalInstance().addAccept(this.getClass().getName() + ".");
    }

    public void test_list() throws Exception {
        A a = new A();
        a.setB(new B());

Reported by PMD.

Potential violation of Law of Demeter (method chain calls)
Design

Line: 12 

              public class WriteClassNameTest extends TestCase {

    protected void setUp() throws Exception {
        com.alibaba.fastjson.parser.ParserConfig.getGlobalInstance().addAccept(this.getClass().getName() + ".");
    }

    public void test_list() throws Exception {
        A a = new A();
        a.setB(new B());

Reported by PMD.

JUnit 4 tests that execute tests should use the @Test annotation, JUnit 5 tests should use @Test, @RepeatedTest, @TestFactory, @TestTemplate or @ParameterizedTest
Design

Line: 15 

                      com.alibaba.fastjson.parser.ParserConfig.getGlobalInstance().addAccept(this.getClass().getName() + ".");
    }

    public void test_list() throws Exception {
        A a = new A();
        a.setB(new B());
        String text = JSON.toJSONString(a, SerializerFeature.WriteClassName);
        System.out.println(text);
        Assert.assertEquals("{\"@type\":\"com.alibaba.json.bvt.writeClassName.WriteClassNameTest$A\",\"b\":{}}", text);

Reported by PMD.

Potential violation of Law of Demeter (object not created locally)
Design

Line: 24 

                      
        A a1 = (A) JSON.parse(text);
        
        Assert.assertNotNull(a1.getB());
    }

    private static class A {

        private B b;

Reported by PMD.

src/test/java/com/alibaba/json/test/benchmark/basic/LongBenchmark.java
6 issues
System.out.println is used
Design

Line: 46 

                          JSON.parseObject(json, Model.class);
        }
        long millis = System.currentTimeMillis() - start;
        System.out.println("millis : " + millis);
    }

    public static void perf2() {
        long start = System.currentTimeMillis();
        for (int i = 0; i < 1000 * 1000 * 10; ++i) {

Reported by PMD.

System.out.println is used
Design

Line: 55 

                          JSON.parseObject(json2, Model.class);
        }
        long millis = System.currentTimeMillis() - start;
        System.out.println("millis : " + millis);
    }

    public static void perf3() {
        long start = System.currentTimeMillis();
        for (int i = 0; i < 1000 * 1000 * 10; ++i) {

Reported by PMD.

System.out.println is used
Design

Line: 64 

                          JSON.parseObject(json3, Model.class);
        }
        long millis = System.currentTimeMillis() - start;
        System.out.println("millis : " + millis);
    }

    public static class Model {
        public long v1;
        public long v2;

Reported by PMD.

All methods are static. Consider using a utility class instead. Alternatively, you could add a private constructor or make the class abstract to silence this warning.
Design

Line: 10 

              /**
 * Created by wenshao on 04/08/2017.
 */
public class LongBenchmark {
    static String json = "{\"v1\":-1883391953414482124,\"v2\":-3019416596934963650,\"v3\":6497525620823745793,\"v4\":2136224289077142499,\"v5\":-2090575024006307745}";
    static String json2 = "{\"v1\":\"-1883391953414482124\",\"v2\":\"-3019416596934963650\",\"v3\":\"6497525620823745793\",\"v4\":\"2136224289077142499\",\"v5\":\"-2090575024006307745\"}";
    static String json3 = "{\n" +
            "\t\"v1\":-1883391953414482124,\n" +
            "\t\"v2\":-3019416596934963650,\n" +

Reported by PMD.

A method/constructor should not explicitly throw java.lang.Exception
Design

Line: 21 

                          "\t\"v5\":-2090575024006307745\n" +
            "}";

    public static void main(String[] args) throws Exception {
//        Model model = new Model();
//        model.v1 = new Random().nextLong();
//        model.v2 = new Random().nextLong();
//        model.v3 = new Random().nextLong();
//        model.v4 = new Random().nextLong();

Reported by PMD.

Avoid unused imports such as 'java.util.Random'
Design

Line: 5 

              
import com.alibaba.fastjson.JSON;

import java.util.Random;

/**
 * Created by wenshao on 04/08/2017.
 */
public class LongBenchmark {

Reported by PMD.

src/test/java/com/alibaba/json/test/a/JTest.java
6 issues
System.out.println is used
Design

Line: 26 

              		Group clz = new Group();
		clz.setUulist(list);
		String json = JSON.toJSONString(clz);
		System.out.println(json);
		Group clz1 = JSON.parseObject(json, Group.class);
		System.out.println(clz1.getUulist().get(1)[1].getName());
	}

}

Reported by PMD.

System.out.println is used
Design

Line: 28 

              		String json = JSON.toJSONString(clz);
		System.out.println(json);
		Group clz1 = JSON.parseObject(json, Group.class);
		System.out.println(clz1.getUulist().get(1)[1].getName());
	}

}

Reported by PMD.

All methods are static. Consider using a utility class instead. Alternatively, you could add a private constructor or make the class abstract to silence this warning.
Design

Line: 10 

              
import com.alibaba.fastjson.JSON;

public class JTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {

Reported by PMD.

Potential violation of Law of Demeter (object not created locally)
Design

Line: 28 

              		String json = JSON.toJSONString(clz);
		System.out.println(json);
		Group clz1 = JSON.parseObject(json, Group.class);
		System.out.println(clz1.getUulist().get(1)[1].getName());
	}

}

Reported by PMD.

Potential violation of Law of Demeter (method chain calls)
Design

Line: 28 

              		String json = JSON.toJSONString(clz);
		System.out.println(json);
		Group clz1 = JSON.parseObject(json, Group.class);
		System.out.println(clz1.getUulist().get(1)[1].getName());
	}

}

Reported by PMD.

Potential violation of Law of Demeter (method chain calls)
Design

Line: 28 

              		String json = JSON.toJSONString(clz);
		System.out.println(json);
		Group clz1 = JSON.parseObject(json, Group.class);
		System.out.println(clz1.getUulist().get(1)[1].getName());
	}

}

Reported by PMD.

src/test/java/com/alibaba/json/test/benchmark/basic/FloatBenchmark_obj.java
6 issues
System.out.println is used
Design

Line: 34 

                          JSON.parseObject(json, Model.class);
        }
        long millis = System.currentTimeMillis() - start;
        System.out.println("millis : " + millis);
    }

    public static void perf2() {
        long start = System.currentTimeMillis();
        for (int i = 0; i < 1000 * 1000; ++i) {

Reported by PMD.

System.out.println is used
Design

Line: 43 

                          JSON.parseObject(json2, Model.class);
        }
        long millis = System.currentTimeMillis() - start;
        System.out.println("millis : " + millis);
    }

    public static class Model {
        public Float v1;
        public Float v2;

Reported by PMD.

All methods are static. Consider using a utility class instead. Alternatively, you could add a private constructor or make the class abstract to silence this warning.
Design

Line: 8 

              /**
 * Created by wenshao on 04/08/2017.
 */
public class FloatBenchmark_obj {
    static String json = "{\"v1\":0.012671709,\"v2\":0.6042485,\"v3\":0.13231707,\"v4\":0.80090785,\"v5\":0.6192943}";
    static String json2 = "{\"v1\":\"0.012671709\",\"v2\":\"0.6042485\",\"v3\":\"0.13231707\",\"v4\":\"0.80090785\",\"v5\":\"0.6192943\"}";

    public static void main(String[] args) throws Exception {
        Model model = new Model();

Reported by PMD.

A method/constructor should not explicitly throw java.lang.Exception
Design

Line: 12 

                  static String json = "{\"v1\":0.012671709,\"v2\":0.6042485,\"v3\":0.13231707,\"v4\":0.80090785,\"v5\":0.6192943}";
    static String json2 = "{\"v1\":\"0.012671709\",\"v2\":\"0.6042485\",\"v3\":\"0.13231707\",\"v4\":\"0.80090785\",\"v5\":\"0.6192943\"}";

    public static void main(String[] args) throws Exception {
        Model model = new Model();
//        model.v1 = new Random().nextFloat();
//        model.v2 = new Random().nextFloat();
//        model.v3 = new Random().nextFloat();
//        model.v4 = new Random().nextFloat();

Reported by PMD.

Avoid unused local variables such as 'model'.
Design

Line: 13 

                  static String json2 = "{\"v1\":\"0.012671709\",\"v2\":\"0.6042485\",\"v3\":\"0.13231707\",\"v4\":\"0.80090785\",\"v5\":\"0.6192943\"}";

    public static void main(String[] args) throws Exception {
        Model model = new Model();
//        model.v1 = new Random().nextFloat();
//        model.v2 = new Random().nextFloat();
//        model.v3 = new Random().nextFloat();
//        model.v4 = new Random().nextFloat();
//        model.v5 = new Random().nextFloat();

Reported by PMD.

Found 'DU'-anomaly for variable 'model' (lines '13'-'26').
Error

Line: 13 

                  static String json2 = "{\"v1\":\"0.012671709\",\"v2\":\"0.6042485\",\"v3\":\"0.13231707\",\"v4\":\"0.80090785\",\"v5\":\"0.6192943\"}";

    public static void main(String[] args) throws Exception {
        Model model = new Model();
//        model.v1 = new Random().nextFloat();
//        model.v2 = new Random().nextFloat();
//        model.v3 = new Random().nextFloat();
//        model.v4 = new Random().nextFloat();
//        model.v5 = new Random().nextFloat();

Reported by PMD.

src/test/java/com/alibaba/json/test/benchmark/basic/FloatBenchmark_arrayMapping_obj.java
6 issues
System.out.println is used
Design

Line: 35 

                          JSON.parseObject(json, Model.class, Feature.SupportArrayToBean);
        }
        long millis = System.currentTimeMillis() - start;
        System.out.println("millis : " + millis);
    }

    public static void perf2() {
        long start = System.currentTimeMillis();
        for (int i = 0; i < 1000 * 1000; ++i) {

Reported by PMD.

System.out.println is used
Design

Line: 44 

                          JSON.parseObject(json2, Model.class, Feature.SupportArrayToBean);
        }
        long millis = System.currentTimeMillis() - start;
        System.out.println("millis : " + millis);
    }

    public static class Model {
        public Float v1;
        public Float v2;

Reported by PMD.

All methods are static. Consider using a utility class instead. Alternatively, you could add a private constructor or make the class abstract to silence this warning.
Design

Line: 9 

              /**
 * Created by wenshao on 04/08/2017.
 */
public class FloatBenchmark_arrayMapping_obj {
    static String json = "[0.012671709,0.6042485,0.13231707,0.80090785,0.6192943]";
    static String json2 = "[\"0.012671709\",\"0.6042485\",\"0.13231707\",\"0.80090785\",\"0.6192943\"]";

    public static void main(String[] args) throws Exception {
        Model model = new Model();

Reported by PMD.

A method/constructor should not explicitly throw java.lang.Exception
Design

Line: 13 

                  static String json = "[0.012671709,0.6042485,0.13231707,0.80090785,0.6192943]";
    static String json2 = "[\"0.012671709\",\"0.6042485\",\"0.13231707\",\"0.80090785\",\"0.6192943\"]";

    public static void main(String[] args) throws Exception {
        Model model = new Model();
//        model.v1 = new Random().nextFloat();
//        model.v2 = new Random().nextFloat();
//        model.v3 = new Random().nextFloat();
//        model.v4 = new Random().nextFloat();

Reported by PMD.

Avoid unused local variables such as 'model'.
Design

Line: 14 

                  static String json2 = "[\"0.012671709\",\"0.6042485\",\"0.13231707\",\"0.80090785\",\"0.6192943\"]";

    public static void main(String[] args) throws Exception {
        Model model = new Model();
//        model.v1 = new Random().nextFloat();
//        model.v2 = new Random().nextFloat();
//        model.v3 = new Random().nextFloat();
//        model.v4 = new Random().nextFloat();
//        model.v5 = new Random().nextFloat();

Reported by PMD.

Found 'DU'-anomaly for variable 'model' (lines '14'-'27').
Error

Line: 14 

                  static String json2 = "[\"0.012671709\",\"0.6042485\",\"0.13231707\",\"0.80090785\",\"0.6192943\"]";

    public static void main(String[] args) throws Exception {
        Model model = new Model();
//        model.v1 = new Random().nextFloat();
//        model.v2 = new Random().nextFloat();
//        model.v3 = new Random().nextFloat();
//        model.v4 = new Random().nextFloat();
//        model.v5 = new Random().nextFloat();

Reported by PMD.

src/test/java/com/alibaba/json/bvt/builder/BuilderTest2.java
6 issues
JUnit 4 tests that execute tests should use the @Test annotation, JUnit 5 tests should use @Test, @RepeatedTest, @TestFactory, @TestTemplate or @ParameterizedTest
Design

Line: 13 

              
public class BuilderTest2 extends TestCase {
    
    public void test_create() throws Exception {
        VO vo = JSON.parseObject("{\"id\":12304,\"name\":\"ljw\"}", VO.class);
        
        Assert.assertEquals(12304, vo.getId());
        Assert.assertEquals("ljw", vo.getName());
    }

Reported by PMD.

Potential violation of Law of Demeter (object not created locally)
Design

Line: 16 

                  public void test_create() throws Exception {
        VO vo = JSON.parseObject("{\"id\":12304,\"name\":\"ljw\"}", VO.class);
        
        Assert.assertEquals(12304, vo.getId());
        Assert.assertEquals("ljw", vo.getName());
    }

    @JSONType(builder=VOBuilder.class)
    public static class VO {

Reported by PMD.

Potential violation of Law of Demeter (object not created locally)
Design

Line: 17 

                      VO vo = JSON.parseObject("{\"id\":12304,\"name\":\"ljw\"}", VO.class);
        
        Assert.assertEquals(12304, vo.getId());
        Assert.assertEquals("ljw", vo.getName());
    }

    @JSONType(builder=VOBuilder.class)
    public static class VO {
        private int id;

Reported by PMD.

The class 'VO' is suspected to be a Data Class (WOC=0.000%, NOPA=0, NOAM=4, WMC=4)
Design

Line: 21 

                  }

    @JSONType(builder=VOBuilder.class)
    public static class VO {
        private int id;
        private String name;

        public void setId(int id) {
            this.id = id;

Reported by PMD.

Private field 'vo' could be made final; it is only initialized in the declaration or constructor.
Design

Line: 45 

                  @JSONPOJOBuilder(buildMethod="xxx")
    public static class VOBuilder {

        private VO vo = new VO();

        public VO xxx() {
            return vo;
        }

Reported by PMD.

Found non-transient, non-static member. Please mark as transient or provide accessors.
Error

Line: 45 

                  @JSONPOJOBuilder(buildMethod="xxx")
    public static class VOBuilder {

        private VO vo = new VO();

        public VO xxx() {
            return vo;
        }

Reported by PMD.

src/main/java/com/alibaba/fastjson/asm/FieldWriter.java
6 issues
Found non-transient, non-static member. Please mark as transient or provide accessors.
Error

Line: 39 

               */
public final class FieldWriter {

    FieldWriter       next;

    /**
     * Access flags of this field.
     */
    private final int access;

Reported by PMD.

Found non-transient, non-static member. Please mark as transient or provide accessors.
Error

Line: 44 

                  /**
     * Access flags of this field.
     */
    private final int access;

    /**
     * The index of the constant pool item that contains the name of this method.
     */
    private final int name;

Reported by PMD.

Found non-transient, non-static member. Please mark as transient or provide accessors.
Error

Line: 49 

                  /**
     * The index of the constant pool item that contains the name of this method.
     */
    private final int name;

    /**
     * The index of the constant pool item that contains the descriptor of this field.
     */
    private final int desc;

Reported by PMD.

Found non-transient, non-static member. Please mark as transient or provide accessors.
Error

Line: 54 

                  /**
     * The index of the constant pool item that contains the descriptor of this field.
     */
    private final int desc;

    // ------------------------------------------------------------------------
    // Constructor
    // ------------------------------------------------------------------------

Reported by PMD.

Potential violation of Law of Demeter (method chain calls)
Design

Line: 99 

                   */
    void put(final ByteVector out) {
        final int mask = 393216; // Opcodes.ACC_DEPRECATED | ClassWriter.ACC_SYNTHETIC_ATTRIBUTE | ((access & ClassWriter.ACC_SYNTHETIC_ATTRIBUTE) / (ClassWriter.ACC_SYNTHETIC_ATTRIBUTE / Opcodes.ACC_SYNTHETIC));
        out.putShort(access & ~mask).putShort(name).putShort(desc);
        int attributeCount = 0;
        out.putShort(attributeCount);
    }
}

Reported by PMD.

Potential violation of Law of Demeter (method chain calls)
Design

Line: 99 

                   */
    void put(final ByteVector out) {
        final int mask = 393216; // Opcodes.ACC_DEPRECATED | ClassWriter.ACC_SYNTHETIC_ATTRIBUTE | ((access & ClassWriter.ACC_SYNTHETIC_ATTRIBUTE) / (ClassWriter.ACC_SYNTHETIC_ATTRIBUTE / Opcodes.ACC_SYNTHETIC));
        out.putShort(access & ~mask).putShort(name).putShort(desc);
        int attributeCount = 0;
        out.putShort(attributeCount);
    }
}

Reported by PMD.

src/main/java/com/alibaba/fastjson/support/spring/MappingFastJsonValue.java
6 issues
The class 'MappingFastJsonValue' is suspected to be a Data Class (WOC=16.667%, NOPA=0, NOAM=4, WMC=9)
Design

Line: 29 

               * @see JSONPObject
 */
@Deprecated
public class MappingFastJsonValue implements JSONSerializable {
    private static final String SECURITY_PREFIX = "/**/";
    private static final int BrowserSecureMask = SerializerFeature.BrowserSecure.mask;

    private Object value;
    private String jsonpFunction;

Reported by PMD.

Potential violation of Law of Demeter (object not created locally)
Design

Line: 82 

                      }


        if ((features & BrowserSecureMask) != 0 || (writer.isEnabled(BrowserSecureMask))) {
            writer.write(SECURITY_PREFIX);
        }

        writer.write(jsonpFunction);
        writer.write('(');

Reported by PMD.

Potential violation of Law of Demeter (object not created locally)
Design

Line: 86 

                          writer.write(SECURITY_PREFIX);
        }

        writer.write(jsonpFunction);
        writer.write('(');
        serializer.write(value);
        writer.write(')');
    }
}

Reported by PMD.

Potential violation of Law of Demeter (object not created locally)
Design

Line: 87 

                      }

        writer.write(jsonpFunction);
        writer.write('(');
        serializer.write(value);
        writer.write(')');
    }
}

Reported by PMD.

Potential violation of Law of Demeter (object not created locally)
Design

Line: 89 

                      writer.write(jsonpFunction);
        writer.write('(');
        serializer.write(value);
        writer.write(')');
    }
}

Reported by PMD.

Found 'DU'-anomaly for variable 'writer' (lines '74'-'90').
Error

Line: 74 

                  }

    public void write(JSONSerializer serializer, Object fieldName, Type fieldType, int features) throws IOException {
        SerializeWriter writer = serializer.out;

        if(jsonpFunction == null){
            serializer.write(value);
            return;
        }

Reported by PMD.

src/test/java/com/alibaba/fastjson/deserializer/issues3796/bean/ObjectF1.java
6 issues
The class 'ObjectF1' is suspected to be a Data Class (WOC=0.000%, NOPA=0, NOAM=34, WMC=34)
Design

Line: 8 

              import java.util.List;


public class ObjectF1 {
    
    long a = -1;
    int b = 0;
    
    long c = 0;

Reported by PMD.

Too many fields
Design

Line: 8 

              import java.util.List;


public class ObjectF1 {
    
    long a = -1;
    int b = 0;
    
    long c = 0;

Reported by PMD.

Avoid using redundant field initializer for 'b'
Performance

Line: 11 

              public class ObjectF1 {
    
    long a = -1;
    int b = 0;
    
    long c = 0;
    
    int d = 0;

Reported by PMD.

Avoid using redundant field initializer for 'c'
Performance

Line: 13 

                  long a = -1;
    int b = 0;
    
    long c = 0;
    
    int d = 0;
    
    int e = 0;

Reported by PMD.

Avoid using redundant field initializer for 'd'
Performance

Line: 15 

                  
    long c = 0;
    
    int d = 0;
    
    int e = 0;


    @JSONField(serialize = false)

Reported by PMD.

Avoid using redundant field initializer for 'e'
Performance

Line: 17 

                  
    int d = 0;
    
    int e = 0;


    @JSONField(serialize = false)
    String f = "";

Reported by PMD.