Translate to Japanese (日本語).

Language code: ja.

### Grammar and tone

1) Use polite, instructional Japanese (です/ます調).
2) Keep the tone concise and technical (match existing Japanese FastAPI docs).

### Headings

1) Follow the existing Japanese style: short, descriptive headings (often noun phrases), e.g. 「チェック」.
2) Do not add a trailing period at the end of headings.

### Quotes

import jakarta.validation.constraints.Size;

/**
 * Form class for creating Kuromoji dictionary entries.
 * Kuromoji is a Japanese morphological analyzer and this form allows
 * administrators to add custom dictionary entries for better Japanese text analysis.
 *
 */
public class CreateForm {

    /**
     * Creates a new CreateForm instance.
     */
    public CreateForm() {

import org.lastaflute.web.ruts.multipart.MultipartFormFile;
import org.lastaflute.web.validation.Required;

/**
 * Form for uploading Kuromoji dictionary files to the Fess search engine.
 * Kuromoji is a Japanese morphological analyzer used for tokenizing Japanese text.
 * This form is used in the admin interface to upload custom user dictionaries for Kuromoji.
 */
public class UploadForm {

    /**

        // Test with English
        List<AnalyzeToken> tokensEn = analyzer.analyze(text, field, "en");
        assertNotNull(tokensEn);
        assertEquals(2, tokensEn.size());

        // Test with Japanese
        List<AnalyzeToken> tokensJa = analyzer.analyze(text, field, "ja");
        assertNotNull(tokensJa);
        assertEquals(2, tokensJa.size());

        // Test with null language

    @Test
    public void testConvertWithJapaneseText() throws IOException {
        // Test convert with Japanese text
        String text = "テスト";
        String field = "content";

        List<String> results = converter.convert(text, field, "ja");

        assertNotNull(results);
        // Should use Japanese analyzer and transliterator
    }

    @Test

/**
 * Form class for editing Kuromoji dictionary entries in the admin interface.
 * This form extends CreateForm to include fields necessary for updating existing Kuromoji dictionary entries.
 * Kuromoji is a Japanese morphological analyzer, and this dictionary manages custom tokenization rules.
 */
public class EditForm extends CreateForm {

    /**
     * Creates a new EditForm instance.
     */
    public EditForm() {

**Test Count**: 10 tests

**Key Scenarios**:
- ✅ Valid filename extraction
- ✅ Null parameters handling
- ✅ Empty/missing resource name
- ✅ Special characters in filename (Japanese, paths)
- ✅ Input stream not consumed (only validated)
- ✅ Whitespace and empty string handling

---

### 3. ArchiveExtractorErrorHandlingTest.java
**Purpose**: Test improved error handling in archive extractors.

        assertEquals(1, readings.size());
        assertEquals("TEST@#$%123", readings.get(0));
    }

    @Test
    public void testConvertWithJapaneseText() throws IOException {
        // Test convert with Japanese text
        testConverter.setJapaneseMode(true);
        converter.init();
        String text = "東京";
        String field = "content";

        List<String> readings = converter.convert(text, field, "ja");

    }

    /**
     * Test with special characters in the target name.
     */
    @Test
    void testSpecialCharacters() {
        String specialChars = "サーバー名/ドメイン.com-123!@#$"; // Japanese characters and symbols
        AvTargetName avTargetName = new AvTargetName(specialChars);
        assertEquals(specialChars, avTargetName.getTargetName(), "Special characters should be handled correctly");
    }

    }

    @Test
    public void testWithJapaneseCharacters() {
        // Test with Japanese characters
        String word = "日本語テスト";
        float boost = 2.0f;
        List<String> readings = Arrays.asList("ニホンゴテスト");
        List<String> fields = Arrays.asList("content_ja");
        List<String> tags = Arrays.asList("japanese");
        List<String> roles = Arrays.asList("admin");