UnnecessaryImport.xml

<?xml version="1.0" encoding="UTF-8"?>
<test-data
    xmlns="http://pmd.sourceforge.net/rule-tests"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://pmd.sourceforge.net/rule-tests http://pmd.sourceforge.net/rule-tests_1_0_0.xsd">

    <test-code>
        <description>simple unused single type import</description>
        <expected-problems>1</expected-problems>
        <code><![CDATA[
import java.io.File;
public class Foo {}
        ]]></code>
    </test-code>

    <test-code>
        <description>one used single type import</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import java.io.File;
public class Foo {
    private File file;
}
        ]]></code>
    </test-code>

    <test-code>
        <description>2 unused single-type imports</description>
        <expected-problems>2</expected-problems>
        <code><![CDATA[
import java.io.File;
import java.util.List;
public class Foo {
}
        ]]></code>
    </test-code>

    <test-code>
        <description>1 used single type import</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import java.security.AccessController;
public class Foo {
    public void foo() {
        AccessController.doPrivileged(null);
    }
}
        ]]></code>
    </test-code>

    <test-code>
        <description>1 import stmt, used only in throws clause</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import java.rmi.RemoteException;
public class Foo {
    public void foo() throws RemoteException {}
}
        ]]></code>
    </test-code>

    <test-code>
        <description>for loop</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import java.util.ArrayList;
public class Foo {
    public void foo(ArrayList list) {
        for (String s : list) {}
    }
}
        ]]></code>
    </test-code>

    <test-code>
        <description>Generics</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import foo.TestInterfaceTwo;
import java.util.*;
public class Foo {
    private List<TestInterfaceTwo> x = new ArrayList<TestInterfaceTwo>();
}
        ]]></code>
    </test-code>

    <test-code>
        <description>Generics 2</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import java.util.Collection;
import java.util.List;
import java.util.ArrayList;
public class Foo {
    private List<Collection> x = new ArrayList<Collection>();
}
        ]]></code>
    </test-code>

    <test-code>
        <description>Annotations</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import foo.annotation.Retention;
import foo.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
public @interface Foo {
}
        ]]></code>
    </test-code>

    <test-code>
        <description>Annotations 2</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import foo.FooAnnotation1;
import foo.FooAnnotation2;
@FooAnnotation1
@FooAnnotation2
public class Foo {}
        ]]></code>
    </test-code>

    <test-code>
        <description>import from default package</description>
        <expected-problems>1</expected-problems>
        <expected-messages>
            <message>Unnecessary import from the current package 'Bar'</message>
        </expected-messages>
        <code><![CDATA[
import Bar;
public class Foo {
    public Bar foo() {}
}
        ]]></code>
    </test-code>
    <test-code>
        <description>import from default package from somewhere else</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
package somewhere;
import Bar;
public class Foo {
    public Bar foo() {}
}
        ]]></code>
    </test-code>

    <test-code>
        <description>import from default package</description>
        <expected-problems>1</expected-problems>
        <code><![CDATA[
package somewhere;
import Bar;
public class Foo {
    public void foo() {}
}
        ]]></code>
    </test-code>

    <test-code disabled="true">
        <!-- This doesn't work anymore since the import is unresolved -->
        <description>Used static import</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import static com.foo.MyClass.staticMethod;
public class Foo {
    public Foo(){
        staticMethod("This is OK");
    }
}
        ]]></code>
    </test-code>

    <test-code>
        <description>Unused static import</description>
        <expected-problems>1</expected-problems>
        <code><![CDATA[
import static com.foo.MyClass.staticMethod;
public class Foo {
    public Foo() {
    }
}
        ]]></code>
    </test-code>

    <test-code>
        <description>On demand import</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import java.util.*;
public class Foo {
    List list = new ArrayList();
}
        ]]></code>
    </test-code>

    <test-code>
        <description>imports used in javadoc comment, see also bug #254</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import java.util.LinkedList;
import java.util.File;
import java.util.NoSuchElementException;
import java.io.IOException;

public class Foo {
    /**
     * {@linkplain  List list}
     * {@link  ArrayList  arraylist}
     * {@link  LinkedList}
     * {@value  Calendar#DATE}
     * @see File
     * @throws NoSuchElementException no such element
     * @exception IOException IO operation exception
     */
    public void test() {}
}
        ]]></code>
    </test-code>

    <test-code>
        <description>#1280 False Positive in UnusedImports when import used in javadoc</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import some.pack.SomeUtility;

public class Foo {
    /**
     * The {@link SomeUtility#someHelperMethod(String, SomeObject)} method does something.
     */
    public void someMethod() {
    }
}
        ]]></code>
    </test-code>

    <test-code>
        <description>#1720 False Positive in UnusedImports for Javadoc link with array type</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import some.pack.SomeUtility;

public class Foo {
    /**
     * The {@link SomeUtility#someHelperMethod(String, SomeObjectArray[])} method does something.
     */
    public void someMethod() {
    }
}
        ]]></code>
    </test-code>

    <test-code>
        <description>Bug 2606609 : False "UnusedImports" positive in package-info.java</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
@DefaultAnnotation(NonNull.class)
package net.sourceforge.pmd.test;

import edu.umd.cs.findbugs.annotations.DefaultAnnotation;
import edu.umd.cs.findbugs.annotations.NonNull;
        ]]></code>
    </test-code>

    <test-code>
        <description>bug #254 False+ : UnusedImport with Javadoc @link</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import java.util.ArrayList;
import java.util.Collections;
import java.util.NoSuchElementException;

public class Test {
    /**
     * {@link ArrayList#add(Object)}
     * @see Collections
     * @throws NoSuchElementException no such element
     */
    String[] getList() { }
}
        ]]></code>
    </test-code>

    <test-code>
        <description>#1181 unused import false positive if used as parameter in javadoc only.</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Vector;

public class Foo {
    /**
     * See here: {@link Collections#reverse(List, Collection)}
     * @see Collections#reverse(ArrayList, Vector)
     */
    public Object bar() {}
}
        ]]></code>
    </test-code>

    <test-code>
        <description>#1280 False Positive in UnusedImports when import used in javadoc</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import some.pack.SomeUtility;

public class Foo {
    /**
     * The {@link SomeUtility#someHelperMethod(String, test.SomeObject)} method does something.
     */
    public void someMethod() {
    }
}
        ]]></code>
    </test-code>

    <test-code>
        <description>#914 False +ve from UnusedImports with wildcard static imports</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import static org.junit.Assert.*;
import org.junit.Test;
import static java.lang.Math.*;

public class FooTest {
    @Test
    public void testStuff() {
        assertEquals( "a", "a" );
        assertFalse( false );
        assertTrue( true );
        assertNull( null );
    }
    public static void main(String[] args) {
        System.out.println(PI);
    }
}
        ]]></code>
    </test-code>

    <test-code>
        <description>#1465 False Positve UnusedImports with javadoc @link</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import a.b.c.d.AgentState;
import a.b.c.d.OtherState;

public interface Foo {
    /**
     * Gets all active AgentHandles.
     * <p/>
     * An agent is active if it has not posted a {@link AgentStateChangeEvent} containing {@link AgentState#TERMINATED}.
     *
     * @return agent handles.
     * @see OtherState#TERMINATED
     */
    Iterable<AgentHandle> getAgentHandles();
}
        ]]></code>
    </test-code>

    <test-code>
        <description>#1547 False Positve UnusedImports with javadoc for identifiers with underscores</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import java.net.HttpURLConnection;

import foo.bar.Some_Thing;
import foo.bar.Under_Score_Exception;
import foo.bar.Fixed_Values;

/**
 * {@link HttpURLConnection#HTTP_NOT_ACCEPTABLE}
 *
 * {@value Fixed_Values#FOO_BAR}
 *
 * @see Some_Thing#SOMETHING_ELSE
 */
public interface Interface {

    /**
     * @throws Under_Score_Exception
     */
    void doSomething();

}
        ]]></code>
    </test-code>

    <test-code>
        <description>#348 False Positive UnusedImports with javadoc for public static inner classes of imports</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import javax.swing.GroupLayout;

public class Foo {

    /**
     * {@link Bar#doSomething(GroupLayout.Group)}
     */
    void doSomething();
}
        ]]></code>
    </test-code>

    <test-code>
        <description>#925 [java] UnusedImports false positive for static import</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport;

            import static net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.ClassWithConstants.*;

            public class ClassWithImport {

                public static void main(String[] args) {
                    System.out.println("List 1: " + LIST1);
                    System.out.println("List 2: " + LIST2);
                }
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>#1404 [java] UnusedImports false positive for static import</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport;

            import static net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.ClassWithStringConstants.*;

            public class ClassWithImport {

                public static void main(String[] args) {
                    if (CONST1.equals("a")) {
                        System.out.println("CONST1 is a");
                    }
                }
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>#1209 [java] UnusedImports false positive for static import with package-private method usage</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport;

            import static net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.PackagePrivateUtils.*;
            import static net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.PublicUtils.*;

            public class Imports {

                int importtest() {
                    int i = 0;
                    i = f1(i);
                    i = g1(i);
                    i = f2(i);
                    i = g2(i);
                    i = f3(i);
                    i = g3(i);
                    return i;
                }
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>#1625 [java] UnusedImports false positive for method parameter type in @see Javadoc</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport;

import java.io.File;
import java.io.FileInputStream;

public class Derived extends FileInputStream {
    /** @see #FileInputStream(File) */
    void main() {}
}
        ]]></code>
    </test-code>

    <test-code>
        <description>#1720 False Positive in UnusedImports for Javadoc @see with array type</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport;

import java.io.File;
import java.io.FileInputStream;

public class Derived extends FileInputStream {
    /** @see #FileInputStream(File, File[]) */
    void main() {}
}
        ]]></code>
    </test-code>

    <test-code>
        <description>#2025 False Positive in UnusedImports for params when using @see with FQCN</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import spark.Response; // flaged, should not

/**
 * @see foo.bar.MyController#startTransaction(Response)
 */
public class VendingV2PaymentRequest {
}
        ]]></code>
    </test-code>

    <test-code>
        <description>#2025 False Positive in UnusedImports for params when using @link with FQCN</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import spark.Request; // flaged, should not

/**
 * {@link foo.bar.MyController#startTransaction(Request)}
 */
public class VendingV2PaymentRequest {
}
        ]]></code>
    </test-code>

    <test-code>
        <description>#2016 [java] UnusedImports: False positive if wildcard is used and only static methods</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport;

// star import is important here for the test case!!
import java.util.*;

/**
 * Note: In order for this test case to work, the class "Issue2016" must also be compiled and available
 * on the auxclasspath.
 */
public class Issue2016 {
    public void testFunction() {
        Objects.toString(null);
    }
}
        ]]></code>
    </test-code>

    <test-code>
        <description>resolve ambiguous static on-demand imports (#2277)</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import static java.lang.Integer.*;
import static java.lang.Long.valueOf;
import static java.lang.Long.*;

public class Foo {
    public void foo() {
        // the "valueOf" method is both in Integer.* and Long.*
        // we need an explicit static import to specify one of them, e.g. Long.valueOf
        valueOf("123", 10);

        // covered by Integer.*
        int i = parseInt("123");

        // covered by Long.*
        long l = parseLong("123");
    }
}
     ]]></code>
    </test-code>

    <test-code>
        <description>[java] UnusedImports with static imports on subclasses #3132</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport;

import static net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.HelloMore.*; // flagged as unused

public class Test {
    public static void main(String... args) {
        sayHello();
    }
}
        ]]></code>
    </test-code>

    <test-code>
        <description>Unused import with member inherited AND imported</description>
        <expected-problems>1</expected-problems>
        <code><![CDATA[
package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport;

import static net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.HelloMore.sayHello;

public class Test extends HelloMore {
    public static void main(String... args) {
        // import is unused as the method is inherited here
        sayHello();
    }
}
        ]]></code>
    </test-code>

    <test-code>
        <description>NPE with static import on interface</description>
        <expected-problems>1</expected-problems>
        <code><![CDATA[
import static javax.swing.WindowConstants.*; //warn

class NPEImport {}
        ]]></code>
    </test-code>

    <!-- Test cases for duplicate imports -->

    <test-code>
        <description>duplicate single type imports</description>
        <expected-problems>2</expected-problems>
        <expected-linenumbers>2,3</expected-linenumbers>
        <expected-messages>
            <message>Unused import 'java.util.*'</message>
            <message>Duplicate import 'java.io.File'</message>
        </expected-messages>
        <code><![CDATA[
            import java.io.File;
            import java.util.*;
            import java.io.File;
            public class Foo {
                File f;
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>duplicate wildcard imports</description>
        <expected-problems>1</expected-problems>
        <expected-linenumbers>2</expected-linenumbers>
        <expected-messages>
            <message>Duplicate import 'java.io.*'</message>
        </expected-messages>
        <code><![CDATA[
            import java.io.*;
            import java.io.*;
            public class Foo {
                File f;
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>single type import after wildcard import</description>
        <expected-problems>1</expected-problems>
        <expected-linenumbers>1</expected-linenumbers>
        <expected-messages>
            <message>Unused import 'java.io.*'</message>
        </expected-messages>
        <code><![CDATA[
            import java.io.*;
            import java.io.File;
            public class Foo {
                File f;
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>subpackage import, ok</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            import java.util.*;
            import java.util.logging.*;
            public class Foo {
                List c; Logger f;
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>674394, disambiguation import should be allowed</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            import java.awt.*;
            import java.util.*;
            import java.util.List; //False positive

            class Foo{
                Color color;
                List list;
                Set set;
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>674394, disambiguation import because of conflict with java.lang</description>
        <expected-problems>1</expected-problems>
        <expected-linenumbers>1</expected-linenumbers>
        <code><![CDATA[
            import foo.*;
            import foo.System;  //False positive

            class Foo {
                System system;  //No, I do not mean java.lang.System
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>#1306 False positive on duplicate when using static imports</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            import static org.junit.Assert.*;
            import static net.sourceforge.pmd.lang.java.rule.codestyle.UnnecessaryImportTest.*;
            import static org.junit.Assert.assertTrue;
            // this import is needed for disambiguation - as DuplicateImportsTest
            // defines assertTrue with the same signature, too.

            public class DuplicateImports {
                static {
                    assertTrue("", true); // the one from the disambiguation import
                    assertSomething("", true); // from UnnecessaryImportTest.*
                    assertFalse("", true); // from Assert.*
                }
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>Static on-demand import is used</description>
        <expected-problems>0</expected-problems>
        <!-- Technically we could report assertTrue, but for now we don't. -->
        <code><![CDATA[
            import static org.junit.Assert.*;
            import static org.junit.Assert.assertTrue;

            public class DuplicateImports {
                static {
                    assertTrue("", true);
                    assertFalse("", true);
                }
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>[java]  similar imports static/nonstatic with method #2546</description>
        <expected-problems>1</expected-problems>
        <expected-linenumbers>2</expected-linenumbers>
        <expected-messages>
            <message>Unused import 'net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.NonStaticContainer.*'</message>
        </expected-messages>
        <code><![CDATA[
            // imports NonStatic -- unused
            import net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.NonStaticContainer.*;
            // imports foo -- used
            import static net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.NonStaticContainer.*;

            public class DuplicateImports {
                static {
                    foo();
                }
            }
            ]]></code>
    </test-code>
    <test-code>
        <description>[java] #2546 -- similar imports static/nonstatic - static is used</description>
        <expected-problems>1</expected-problems>
        <expected-linenumbers>2</expected-linenumbers>
        <expected-messages>
            <message>Unused import 'net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.NonStaticContainer.*'</message>
        </expected-messages>
        <code><![CDATA[
            // imports NonStatic -- unused
            import net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.NonStaticContainer.*;
            // imports Static
            import static net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.NonStaticContainer.*;

            public class DuplicateImports {
                static {
                    Static b;
                }
            }
            ]]></code>
    </test-code>
    <test-code>
        <description>[java] #2546 -- similar imports static/nonstatic - static is unused</description>
        <expected-problems>1</expected-problems>
        <expected-linenumbers>4</expected-linenumbers>
        <expected-messages>
            <message>Unused static import 'net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.NonStaticContainer.*'</message>
        </expected-messages>
        <code><![CDATA[
            // imports NonStatic
            import net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.NonStaticContainer.*;
            // imports Static -- unused
            import static net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.NonStaticContainer.*;

            public class DuplicateImports {
                static {
                    NonStatic b;
                }
            }
            ]]></code>
    </test-code>
    <test-code>
        <description>[java] #2546 -- similar imports static/nonstatic - both are used</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            // imports NonStatic
            import net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.NonStaticContainer.*;
            // imports Static
            import static net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.NonStaticContainer.*;

            public class DuplicateImports {
                static {
                    // both are used
                    NonStatic a;
                    Static b;
                }
            }
            ]]></code>
    </test-code>
    <test-code>
        <description>[java] #2546 -- similar imports static/nonstatic - both are used (method)</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            // imports NonStatic
            import net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.NonStaticContainer.*;
            // imports foo()
            import static net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.NonStaticContainer.*;

            public class DuplicateImports {
                static {
                    // both are used
                    NonStatic a;
                    foo();
                }
            }
            ]]></code>
    </test-code>


    <test-code>
        <description>ImportFromSamePackage: simple failure</description>
        <expected-problems>1</expected-problems>
        <code><![CDATA[
            package foo;
            import foo.Bar;
            public class Baz {
                Bar bar;
            }
        ]]></code>
    </test-code>

    <test-code>
        <description>ImportFromSamePackage: class in default package importing from sub package</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            package foo;
            import foo.buz.Bar;
            public class Baz{
                Bar b;
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>ImportFromSamePackage: importing all from same package</description>
        <expected-problems>1</expected-problems>
        <expected-messages>
            <message>Unused import 'foo.bar.*'</message>
        </expected-messages>
        <code><![CDATA[
            package foo.bar;
            import foo.bar.*;
            public class Baz{}
            ]]></code>
    </test-code>

    <!-- From DontImportJavaLang   -->

    <test-code>
        <description>import java.lang.String (used)</description>
        <expected-problems>1</expected-problems>
        <expected-messages>
            <message>Unnecessary import from the java.lang package 'java.lang.String'</message>
        </expected-messages>
        <code><![CDATA[
            import java.lang.String;
            public class Foo {
                String foo;
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>import java.lang.String (unused)</description>
        <expected-problems>1</expected-problems>
        <expected-messages>
            <message>Unused import 'java.lang.String'</message>
        </expected-messages>
        <code><![CDATA[
            import java.lang.String;
            public class Foo { }
            ]]></code>
    </test-code>

    <test-code>
        <description>import java.lang type when it shadows a same package type</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            // this package redefines a String type
            package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.javalang;

            import java.lang.String;
            public class Foo {
                String foo;
            }
            ]]></code>
    </test-code>
    <test-code>
        <description>import java.lang type when it shadows a same package type (unused)</description>
        <expected-problems>1</expected-problems>
        <expected-messages>
            <message>Unused import 'java.lang.String'</message>
        </expected-messages>
        <code><![CDATA[
            // this package redefines a String type
            package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.javalang;

            import java.lang.String;
            public class Foo { }
            ]]></code>
    </test-code>

    <test-code>
        <description>import java.lang.*</description>
        <expected-problems>1</expected-problems>
        <code><![CDATA[
            import java.lang.*;
            public class Foo {}
            ]]></code>
    </test-code>

    <test-code>
        <description>import java.lang.ref/reflect/annotation/instrument/management</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            import java.lang.ref.*;
            import java.lang.reflect.*;
            import java.lang.annotation.*;
            import java.lang.management.*;
            public class Foo {
                Annotation a; Method m; WeakReference r;
                RuntimeMXBean x;
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>Static Java imports are OK</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            import static java.lang.String.*;
            public class Foo {
                static {
                    valueOf(1);
                }
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>Importing java.lang.Thread.UncaughtExceptionHandler, unused</description>
        <expected-problems>1</expected-problems>
        <expected-messages>
            <message>Unused import 'java.lang.Thread.UncaughtExceptionHandler'</message>
        </expected-messages>
        <code><![CDATA[
            import java.lang.Thread.UncaughtExceptionHandler;
            public class Foo {
                Thread.UncaughtExceptionHandler unused;
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>Importing java.lang.Thread.UncaughtExceptionHandler</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            import java.lang.Thread.UncaughtExceptionHandler;
            public class Foo {
                UncaughtExceptionHandler used;
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>import java.lang.ProcessBuilder.Redirect: #1031 false DontImportJavaLang</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            import java.lang.ProcessBuilder.Redirect;

            public class Foo {
                Redirect r;
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>import java.lang.invoke.MethodHandles: #339 false DontImportJavaLang</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            import java.lang.invoke.MethodHandles;

            public class Foo {
                static {
                    MethodHandles.argumentsWithCombiner();// use it
                }
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>[java] UnnecessaryImport false positive for on-demand imports #2655</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.package1;

import net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.package2.*; // SUPPRESS CHECKSTYLE needed for test case

public class U {
    private void g() {
        String k = C.V;
    }
}
        ]]></code>
    </test-code>

    <test-code>
        <description>static import of a type</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport;

import static net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.ConcFlow.Subscriber;
import net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.ConcFlow.Publisher;
import static net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.ConcFlow.Subscription;

/**
 * {@link Flow.Subscription#request(long) request}
 * {@link Flow.Subscription}
 */
public class SubmissionPublisher<T> implements Publisher<T> {
    static final class ConsumerSubscriber<T> implements Subscriber<T> {
        Subscription subscription;
    }
}
        ]]></code>
    </test-code>
    <test-code>
        <description>[java] UnnecessaryImport false positive for on-demand imports of non-static nested classes</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.package1;

import net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.package2.C.*; // SUPPRESS CHECKSTYLE needed for test case

public class U {
    IC c;
}
        ]]></code>
    </test-code>

    <test-code>
        <description>[java] UnnecessaryImport false positive for static on-demand imports of static nested classes</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.package1;

import static net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.package2.C.*; // SUPPRESS CHECKSTYLE needed for test case

public class U {
    ISC sc;
}
        ]]></code>
    </test-code>

    <test-code>
        <description>Necessary imports for @snippet tags introduced with JEP 413 in Java 18</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import java.math.BigDecimal;
import java.util.ArrayList;

/**
 * {@snippet :
 *    BigDecimal n = new BigDecimal("10.0"); // @link substring="BigDecimal" target="BigDecimal"
 * }
 *
 * <p>Other example:
 * {@snippet :
 *    Sample.add(this); // @link target="ArrayList#add(Object)"
 * }
 */
public class Sample {
    // ...
}
        ]]></code>
    </test-code>
    <test-code>
        <description>#4432 - Necessary import for interface method</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            package p;

            import static p.Top2.foo;

            class Klass implements Top {
                static {
                    foo(); // This is Top2.foo
                }

                static class Child {
                    {
                        foo(); // This is also Top2.foo
                    }
                }
            }
            interface Top {
                static void foo() {}
            }
            interface Top2 {
                static void foo() {}
            }
            ]]></code>
    </test-code>
    <test-code>
        <description>#4557 - UnnecessaryImport FP with static imports of overloaded methods</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            package p;

            import static p.Static.assertThat;

            class Klass {
                static {
                    assertThat(1); // This is assertThat(Integer)
                }
            }
            class Static {

                public static Object assertThat(Integer actual) {
                    return null;
                }

                public static Object assertThat(Long actual) {
                    return null;
                }
            }
            ]]></code>
    </test-code>

    <test-code>
        <description>[java] UnnecessaryImport false-positive on generic method call with on lambda #4816</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
package net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport;

import java.util.function.Function;
import java.util.stream.Collectors; // UnnecessaryImport:	Unused import 'java.util.stream.Collectors'
import java.util.TreeSet; // UnnecessaryImport:	Unused import 'java.util.TreeSet'
import java.util.Set;

import net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.item.Item; // UnnecessaryImport:	Unused import 'net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.item.Item'
import net.sourceforge.pmd.lang.java.rule.codestyle.unnecessaryimport.item.ItemProducer;

public class Example {
    private <X> X run(Function<ItemProducer, X> f) { return null; }

    public Set<String> sample() {
        return run((producer) -> producer
            .stream()
            .map(Item::getValue)
            .collect(Collectors.toCollection(TreeSet::new)));
    }
}
]]></code>
    </test-code>
</test-data>