The following issues were found

src/test/java/com/alibaba/json/bvt/WriteClassNameTest2.java
7 issues
System.out.println is used
Design

Line: 18 

                  public void test_0() throws Exception {
        Entity entity = new Entity(3, "jobs");
        String text = JSON.toJSONString(entity, SerializerFeature.WriteClassName, SerializerFeature.PrettyFormat);
        System.out.println(text);
        
        Entity entity2 = (Entity) JSON.parseObject(text, Object.class);
        
        Assert.assertEquals(entity.getId(), entity2.getId());
        Assert.assertEquals(entity.getName(), entity2.getName());

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 

              import com.alibaba.fastjson.serializer.SerializerFeature;

public class WriteClassNameTest2 extends TestCase {
    protected void setUp() throws Exception {
        ParserConfig.global.addAccept("com.alibaba.json.bvt.WriteClassNameTest2");
    }

    public void test_0() throws Exception {
        Entity entity = new Entity(3, "jobs");

Reported by PMD.

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

Line: 12 

              
public class WriteClassNameTest2 extends TestCase {
    protected void setUp() throws Exception {
        ParserConfig.global.addAccept("com.alibaba.json.bvt.WriteClassNameTest2");
    }

    public void test_0() throws Exception {
        Entity entity = new Entity(3, "jobs");
        String text = JSON.toJSONString(entity, SerializerFeature.WriteClassName, SerializerFeature.PrettyFormat);

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 

                      ParserConfig.global.addAccept("com.alibaba.json.bvt.WriteClassNameTest2");
    }

    public void test_0() throws Exception {
        Entity entity = new Entity(3, "jobs");
        String text = JSON.toJSONString(entity, SerializerFeature.WriteClassName, SerializerFeature.PrettyFormat);
        System.out.println(text);
        
        Entity entity2 = (Entity) JSON.parseObject(text, Object.class);

Reported by PMD.

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

Line: 22 

                      
        Entity entity2 = (Entity) JSON.parseObject(text, Object.class);
        
        Assert.assertEquals(entity.getId(), entity2.getId());
        Assert.assertEquals(entity.getName(), entity2.getName());
    }

    public static class Entity {

Reported by PMD.

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

Line: 23 

                      Entity entity2 = (Entity) JSON.parseObject(text, Object.class);
        
        Assert.assertEquals(entity.getId(), entity2.getId());
        Assert.assertEquals(entity.getName(), entity2.getName());
    }

    public static class Entity {

        private int    id;

Reported by PMD.

The class 'Entity' is suspected to be a Data Class (WOC=0.000%, NOPA=0, NOAM=4, WMC=6)
Design

Line: 26 

                      Assert.assertEquals(entity.getName(), entity2.getName());
    }

    public static class Entity {

        private int    id;
        private String name;

        public Entity(){

Reported by PMD.

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

Line: 18 

                  public void test_0() throws Exception {
        Entity entity = new Entity(3, "jobs");
        String text = JSON.toJSONString(entity, SerializerFeature.WriteClassName);
        System.out.println(text);

        Entity entity2 = (Entity) JSON.parseObject(text, Object.class);

        Assert.assertEquals(entity.getId(), entity2.getId());
        Assert.assertEquals(entity.getName(), entity2.getName());

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 

              import com.alibaba.fastjson.serializer.SerializerFeature;

public class WriteClassNameTest extends TestCase {
    protected void setUp() throws Exception {
        ParserConfig.global.addAccept("com.alibaba.json.bvt.WriteClassNameTest.");
    }

    public void test_0() throws Exception {
        Entity entity = new Entity(3, "jobs");

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 {
        ParserConfig.global.addAccept("com.alibaba.json.bvt.WriteClassNameTest.");
    }

    public void test_0() throws Exception {
        Entity entity = new Entity(3, "jobs");
        String text = JSON.toJSONString(entity, SerializerFeature.WriteClassName);

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 

                      ParserConfig.global.addAccept("com.alibaba.json.bvt.WriteClassNameTest.");
    }

    public void test_0() throws Exception {
        Entity entity = new Entity(3, "jobs");
        String text = JSON.toJSONString(entity, SerializerFeature.WriteClassName);
        System.out.println(text);

        Entity entity2 = (Entity) JSON.parseObject(text, Object.class);

Reported by PMD.

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

Line: 22 

              
        Entity entity2 = (Entity) JSON.parseObject(text, Object.class);

        Assert.assertEquals(entity.getId(), entity2.getId());
        Assert.assertEquals(entity.getName(), entity2.getName());
    }

    public static class Entity {

Reported by PMD.

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

Line: 23 

                      Entity entity2 = (Entity) JSON.parseObject(text, Object.class);

        Assert.assertEquals(entity.getId(), entity2.getId());
        Assert.assertEquals(entity.getName(), entity2.getName());
    }

    public static class Entity {

        private int    id;

Reported by PMD.

The class 'Entity' is suspected to be a Data Class (WOC=0.000%, NOPA=0, NOAM=4, WMC=6)
Design

Line: 26 

                      Assert.assertEquals(entity.getName(), entity2.getName());
    }

    public static class Entity {

        private int    id;
        private String name;

        public Entity(){

Reported by PMD.

src/test/java/com/alibaba/json/bvt/BooleanArrayFieldTest_primitive.java
7 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: 12 

              
public class BooleanArrayFieldTest_primitive extends TestCase {

    public void test_array() throws Exception {
        Assert.assertEquals("[true]", JSON.toJSONString(new boolean[] { true }));

    }

    public void test_codec_null() throws Exception {

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: 17 

              
    }

    public void test_codec_null() throws Exception {
        V0 v = new V0();

        SerializeConfig mapping = new SerializeConfig();
        mapping.setAsmEnable(false);

Reported by PMD.

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

Line: 28 

              
        V0 v1 = JSON.parseObject(text, V0.class);

        Assert.assertEquals(v1.getValue(), v.getValue());
    }

    public void test_codec_null_1() throws Exception {
        V0 v = new V0();

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: 31 

                      Assert.assertEquals(v1.getValue(), v.getValue());
    }

    public void test_codec_null_1() throws Exception {
        V0 v = new V0();

        SerializeConfig mapping = new SerializeConfig();
        mapping.setAsmEnable(false);

Reported by PMD.

Returning 'value' may expose an internal array.
Design

Line: 46 

                      private boolean[] value;

        public boolean[] getValue() {
            return value;
        }

        public void setValue(boolean[] value) {
            this.value = value;
        }

Reported by PMD.

The user-supplied array 'value' is stored directly.
Design

Line: 49 

                          return value;
        }

        public void setValue(boolean[] value) {
            this.value = value;
        }

    }
}

Reported by PMD.

Consider using varargs for methods or constructors which take an array the last parameter.
Design

Line: 49 

                          return value;
        }

        public void setValue(boolean[] value) {
            this.value = value;
        }

    }
}

Reported by PMD.

src/test/java/com/alibaba/json/bvt/BooleanArrayFieldTest_primitive_private.java
7 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: 12 

              
public class BooleanArrayFieldTest_primitive_private extends TestCase {

    public void test_array() throws Exception {
        Assert.assertEquals("[true]", JSON.toJSONString(new boolean[] { true }));

    }

    public void test_codec_null() throws Exception {

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: 17 

              
    }

    public void test_codec_null() throws Exception {
        V0 v = new V0();

        SerializeConfig mapping = new SerializeConfig();
        mapping.setAsmEnable(false);

Reported by PMD.

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

Line: 28 

              
        V0 v1 = JSON.parseObject(text, V0.class);

        Assert.assertEquals(v1.getValue(), v.getValue());
    }

    public void test_codec_null_1() throws Exception {
        V0 v = new V0();

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: 31 

                      Assert.assertEquals(v1.getValue(), v.getValue());
    }

    public void test_codec_null_1() throws Exception {
        V0 v = new V0();

        SerializeConfig mapping = new SerializeConfig();
        mapping.setAsmEnable(false);

Reported by PMD.

Returning 'value' may expose an internal array.
Design

Line: 46 

                      private boolean[] value;

        public boolean[] getValue() {
            return value;
        }

        public void setValue(boolean[] value) {
            this.value = value;
        }

Reported by PMD.

The user-supplied array 'value' is stored directly.
Design

Line: 49 

                          return value;
        }

        public void setValue(boolean[] value) {
            this.value = value;
        }

    }
}

Reported by PMD.

Consider using varargs for methods or constructors which take an array the last parameter.
Design

Line: 49 

                          return value;
        }

        public void setValue(boolean[] value) {
            this.value = value;
        }

    }
}

Reported by PMD.

src/test/java/com/alibaba/json/bvt/URLFieldTest.java
7 issues
System.out.println is used
Design

Line: 21 

                      SerializeConfig mapping = new SerializeConfig();
        mapping.setAsmEnable(false);
        String text = JSON.toJSONString(user, mapping, SerializerFeature.WriteMapNullValue);
        System.out.println(text);

        User user1 = JSON.parseObject(text, User.class);

        Assert.assertEquals(user1.getValue().toString(), user.getValue().toString());
    }

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: 14 

              
public class URLFieldTest extends TestCase {

    public void test_codec() throws Exception {
        User user = new User();
        user.setValue(new URL("http://code.alibaba-tech.com"));

        SerializeConfig mapping = new SerializeConfig();
        mapping.setAsmEnable(false);

Reported by PMD.

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

Line: 25 

              
        User user1 = JSON.parseObject(text, User.class);

        Assert.assertEquals(user1.getValue().toString(), user.getValue().toString());
    }

    public void test_codec_null() throws Exception {
        User user = new User();
        user.setValue(null);

Reported by PMD.

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

Line: 25 

              
        User user1 = JSON.parseObject(text, User.class);

        Assert.assertEquals(user1.getValue().toString(), user.getValue().toString());
    }

    public void test_codec_null() throws Exception {
        User user = new User();
        user.setValue(null);

Reported by PMD.

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

Line: 25 

              
        User user1 = JSON.parseObject(text, User.class);

        Assert.assertEquals(user1.getValue().toString(), user.getValue().toString());
    }

    public void test_codec_null() throws Exception {
        User user = new User();
        user.setValue(null);

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: 28 

                      Assert.assertEquals(user1.getValue().toString(), user.getValue().toString());
    }

    public void test_codec_null() throws Exception {
        User user = new User();
        user.setValue(null);

        SerializeConfig mapping = new SerializeConfig();
        mapping.setAsmEnable(false);

Reported by PMD.

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

Line: 38 

              
        User user1 = JSON.parseObject(text, User.class);

        Assert.assertEquals(user1.getValue(), user.getValue());
    }

    public static class User {

        private URL value;

Reported by PMD.

src/test/java/com/alibaba/fastjson/deserializer/issues3796/bean/ObjectP1_A.java
7 issues
The class 'ObjectP1_A' is suspected to be a Data Class (WOC=0.000%, NOPA=0, NOAM=12, WMC=12)
Design

Line: 8 

              


public class ObjectP1_A {
    
    private int a = 0;
    
    private int b = 0;

Reported by PMD.

Avoid using redundant field initializer for 'a'
Performance

Line: 10 

              
public class ObjectP1_A {
    
    private int a = 0;
    
    private int b = 0;
    
    private int c = 0;

Reported by PMD.

Avoid using redundant field initializer for 'b'
Performance

Line: 12 

                  
    private int a = 0;
    
    private int b = 0;
    
    private int c = 0;
    
    private boolean d = false;

Reported by PMD.

Avoid using redundant field initializer for 'c'
Performance

Line: 14 

                  
    private int b = 0;
    
    private int c = 0;
    
    private boolean d = false;
    
    private int e = 0;

Reported by PMD.

Avoid using redundant field initializer for 'd'
Performance

Line: 16 

                  
    private int c = 0;
    
    private boolean d = false;
    
    private int e = 0;
    
    private int f = 0;

Reported by PMD.

Avoid using redundant field initializer for 'e'
Performance

Line: 18 

                  
    private boolean d = false;
    
    private int e = 0;
    
    private int f = 0;

    public int getA() {
        return a;

Reported by PMD.

Avoid using redundant field initializer for 'f'
Performance

Line: 20 

                  
    private int e = 0;
    
    private int f = 0;

    public int getA() {
        return a;
    }

Reported by PMD.

src/test/java/com/alibaba/json/bvt/TypeUtilstTest.java
7 issues
Do not use the short type
Performance

Line: 73 

                      private Boolean    f2;
        private byte       f3;
        private Byte       f4;
        private short      f5;
        private Short      f6;
        private int        f7;
        private Integer    f8;
        private long       f9;
        private Long       f10;

Reported by PMD.

Do not use the short type
Performance

Line: 120 

                          this.f4 = f4;
        }

        public short getF5() {
            return f5;
        }

        public void setF5(short f5) {
            this.f5 = f5;

Reported by PMD.

Do not use the short type
Performance

Line: 124 

                          return f5;
        }

        public void setF5(short f5) {
            this.f5 = f5;
        }

        public Short getF6() {
            return f6;

Reported by PMD.

JUnit tests should include assert() or fail()
Design

Line: 30 

              
public class TypeUtilstTest extends TestCase {

    public void test_0() throws Exception {

        List<Person> personList = new ArrayList<Person>();
        {
            Person p = new Person();
            p.setF1(true);

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: 30 

              
public class TypeUtilstTest extends TestCase {

    public void test_0() throws Exception {

        List<Person> personList = new ArrayList<Person>();
        {
            Person p = new Person();
            p.setF1(true);

Reported by PMD.

Too many fields
Design

Line: 67 

                      // CGLibExtJSONParser parser = new CGLibExtJSONParser(text);
    }

    public static class Person {

        private boolean    f1;
        private Boolean    f2;
        private byte       f3;
        private Byte       f4;

Reported by PMD.

The class 'Person' is suspected to be a Data Class (WOC=0.000%, NOPA=0, NOAM=36, WMC=36)
Design

Line: 67 

                      // CGLibExtJSONParser parser = new CGLibExtJSONParser(text);
    }

    public static class Person {

        private boolean    f1;
        private Boolean    f2;
        private byte       f3;
        private Byte       f4;

Reported by PMD.

src/test/java/com/alibaba/json/bvt/TestMultiLevelClass2.java
7 issues
System.out.println is used
Design

Line: 57 

                      a.getB().getC().setValue(123);
        
        String text = JSON.toJSONString(a);
        System.out.println(text);
        
        A a2 = JSON.parseObject(text, A.class);
    }
}

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: 50 

                      }
    }

    public void test_codec() throws Exception {
        A a = new A();
        a.setB(a.new B());
        a.getB().setC(a.b.new C());
        a.getB().getC().setValue(123);

Reported by PMD.

JUnit tests should include assert() or fail()
Design

Line: 50 

                      }
    }

    public void test_codec() throws Exception {
        A a = new A();
        a.setB(a.new B());
        a.getB().setC(a.b.new C());
        a.getB().getC().setValue(123);

Reported by PMD.

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

Line: 54 

                      A a = new A();
        a.setB(a.new B());
        a.getB().setC(a.b.new C());
        a.getB().getC().setValue(123);
        
        String text = JSON.toJSONString(a);
        System.out.println(text);
        
        A a2 = JSON.parseObject(text, A.class);

Reported by PMD.

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

Line: 54 

                      A a = new A();
        a.setB(a.new B());
        a.getB().setC(a.b.new C());
        a.getB().getC().setValue(123);
        
        String text = JSON.toJSONString(a);
        System.out.println(text);
        
        A a2 = JSON.parseObject(text, A.class);

Reported by PMD.

Avoid unused local variables such as 'a2'.
Design

Line: 59 

                      String text = JSON.toJSONString(a);
        System.out.println(text);
        
        A a2 = JSON.parseObject(text, A.class);
    }
}

Reported by PMD.

Found 'DU'-anomaly for variable 'a2' (lines '59'-'60').
Error

Line: 59 

                      String text = JSON.toJSONString(a);
        System.out.println(text);
        
        A a2 = JSON.parseObject(text, A.class);
    }
}

Reported by PMD.

src/test/java/com/alibaba/json/bvt/TestMultiLevelClass.java
7 issues
System.out.println is used
Design

Line: 57 

                      a.getB().getC().setValue(123);
        
        String text = JSON.toJSONString(a);
        System.out.println(text);
        
        A a2 = JSON.parseObject(text, A.class);
    }
}

Reported by PMD.

JUnit tests should include assert() or fail()
Design

Line: 50 

                      }
    }

    public void test_codec() throws Exception {
        A a = new A();
        a.setB(new A.B());
        a.getB().setC(new A.B.C());
        a.getB().getC().setValue(123);

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: 50 

                      }
    }

    public void test_codec() throws Exception {
        A a = new A();
        a.setB(new A.B());
        a.getB().setC(new A.B.C());
        a.getB().getC().setValue(123);

Reported by PMD.

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

Line: 54 

                      A a = new A();
        a.setB(new A.B());
        a.getB().setC(new A.B.C());
        a.getB().getC().setValue(123);
        
        String text = JSON.toJSONString(a);
        System.out.println(text);
        
        A a2 = JSON.parseObject(text, A.class);

Reported by PMD.

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

Line: 54 

                      A a = new A();
        a.setB(new A.B());
        a.getB().setC(new A.B.C());
        a.getB().getC().setValue(123);
        
        String text = JSON.toJSONString(a);
        System.out.println(text);
        
        A a2 = JSON.parseObject(text, A.class);

Reported by PMD.

Avoid unused local variables such as 'a2'.
Design

Line: 59 

                      String text = JSON.toJSONString(a);
        System.out.println(text);
        
        A a2 = JSON.parseObject(text, A.class);
    }
}

Reported by PMD.

Found 'DU'-anomaly for variable 'a2' (lines '59'-'60').
Error

Line: 59 

                      String text = JSON.toJSONString(a);
        System.out.println(text);
        
        A a2 = JSON.parseObject(text, A.class);
    }
}

Reported by PMD.

src/test/java/com/alibaba/json/bvt/bug/Bug_for_yunban.java
7 issues
System.out.println is used
Design

Line: 33 

                      //ParserConfig.getGlobalInstance().setAutoTypeSupport(true);
        //String a = JSON.toJSONString(relationItemList, SerializerFeature.WriteClassName);
        String a1 = JSON.toJSONString(relationItemList);
        System.out.println(a1);


        //ParserConfig.getGlobalInstance().setAutoTypeSupport(true);
        List<RelationItem> relationItemList1 = JSON.parseObject(a1, new com.alibaba.fastjson.TypeReference<List<RelationItem>>(){});

Reported by PMD.

System.out.print is used
Design

Line: 39 

                      //ParserConfig.getGlobalInstance().setAutoTypeSupport(true);
        List<RelationItem> relationItemList1 = JSON.parseObject(a1, new com.alibaba.fastjson.TypeReference<List<RelationItem>>(){});

        System.out.print("fdafda");
    }

    public static class RelationItem {
        private String sourceId;
        private Map<String, String> ext;

Reported by PMD.

JUnit tests should include assert() or fail()
Design

Line: 12 

              import java.util.Map;

public class Bug_for_yunban extends TestCase {
    public void test_for_issue() throws Exception {
        List<RelationItem> relationItemList = new LinkedList<RelationItem>();

        Map<String, String> ext = new HashMap<String, String>();
        ext.put("a", "b");
        ext.put("c", "d");

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: 12 

              import java.util.Map;

public class Bug_for_yunban extends TestCase {
    public void test_for_issue() throws Exception {
        List<RelationItem> relationItemList = new LinkedList<RelationItem>();

        Map<String, String> ext = new HashMap<String, String>();
        ext.put("a", "b");
        ext.put("c", "d");

Reported by PMD.

Avoid unused local variables such as 'relationItemList1'.
Design

Line: 37 

              

        //ParserConfig.getGlobalInstance().setAutoTypeSupport(true);
        List<RelationItem> relationItemList1 = JSON.parseObject(a1, new com.alibaba.fastjson.TypeReference<List<RelationItem>>(){});

        System.out.print("fdafda");
    }

    public static class RelationItem {

Reported by PMD.

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

Line: 42 

                      System.out.print("fdafda");
    }

    public static class RelationItem {
        private String sourceId;
        private Map<String, String> ext;

        public String getSourceId() {
            return sourceId;

Reported by PMD.

Found 'DU'-anomaly for variable 'relationItemList1' (lines '37'-'40').
Error

Line: 37 

              

        //ParserConfig.getGlobalInstance().setAutoTypeSupport(true);
        List<RelationItem> relationItemList1 = JSON.parseObject(a1, new com.alibaba.fastjson.TypeReference<List<RelationItem>>(){});

        System.out.print("fdafda");
    }

    public static class RelationItem {

Reported by PMD.