Language detection is a feature that we needed in a past project. I wrote an article in 2020 regarding the use of kju2 fork of the Optimaize Language Detector java library. The Optimaize library hasn't been updated since 2015 and the kju2 fork was placed in read-only mode on Apr 16, 2023.
I evaluated the Lingua java library. It claims to be the "The most accurate natural language detection library for Java and the JVM, suitable for long and short text alike" and also appears to be actively updated & supported. In my small unit test, Lingua seemed to be slightly slower and couldn't correctly identify Malay text.
The detection time for both java libraries was fairly random for English. Sometimes it would return a response in 295 ms and other times it would be 48,000+ ms. (Maybe it's just my developer PC.) kju2 seemed to be faster on average.
I also found a third-party Detect Language API that supports 165 languages and claims to have "high accuracy". It requires an API key and offers both free & premium plans.
If you're performing language detection with Java and/or ColdFusion/CFML, what are you using?
| Should Be | kju2 lang | kju2 ms | lingua lang | lingua ms | api lang | api ms | Sample Text |
|---|---|---|---|---|---|---|---|
| ENGLISH | ENGLISH | 2272 | ENGLISH | 570 | en | 537 | A great way to learn Spanish vocabulary is by reading texts, stories or articles that are completely in the language. That is why we have written are own short reading passages in Spanish about different topics. |
| GREEK | GREEK | 6 | GREEK | 12 | el | 105 | Βίβλος γενέσεως Ἰησοῦ Χριστοῦ υἱοῦ Δαυεὶδ υἱοῦ Ἀβραάμ. |
| FRENCH | FRENCH | 61 | FRENCH | 78 | fr | 70 | En hiver, il fait froid en France. Le soleil se lève tard. Il fait encore nuit quand je vais au travail. Parfois, il y a même de la neige. |
| HEBREW | HEBREW | 3 | HEBREW | 11 | iw | 110 | כל ישראל יש להם חלק לעולם הבא, שנאמר ועמך כולם צדיקים, לעולם יירשו ארץ, נצר מטעי מעשה ידי להתפאר. |
| ARABIC | ARABIC | 2 | ARABIC | 19 | ar | 81 | عندما يريد العالم أن يتكلّم ، فهو يتحدّث بلغة يونيكود. تسجّل الآن لحضور المؤتمر الدولي العاشر ليونيكود |
| CHINESE | CHINESE | 2 | CHINESE | 8 | zh | 74 | 虽然它长得不好看，但是它有一颗无比善良的心。小猴子乐乐的家被大水冲垮了，无家可归。丑丑就让乐乐住在自己的家，还把自己最喜欢吃的巧克力分给乐乐吃。不仅如此，谁头痛、生病了，没钱买药，它都会尽其所能进行帮助。 |
| KOREAN | KOREAN | 12 | KOREAN | 3 | ko | 120 | 안녕하십니까 할리데이비슨 대구점 MC 우제헌입니다. 포티에잇 문의 전달받고 전화 드렸습니다만 연결되지 않아 문자 드립니다. |
| SPANISH | SPANISH | 0 | SPANISH | 116 | es | 92 | Habitualmente este término se aplica a todas las pistas donde aterrizan aviones, sin embargo el término correcto es aeródromo. |
| THAI | THAI | 1 | THAI | 14 | th | 105 | ข้อ 1 มนุษย์ทั้งหลายเกิดมามีอิสระและเสมอภาคกันในเกียรติศักด[เกียรติศักดิ์]และสิทธิ ต่างมีเหตุผลและมโนธรรม และควรปฏิบัติต่อกันด้วยเจตนารมณ์แห่งภราดรภาพ |
| VIETNAMESE | VIETNAMESE | 2 | VIETNAMESE | 14 | vi | 98 | Tất cả mọi người sinh ra đều được tự do và bình đẳng về nhân phẩm và quyền lợi. Mọi con người đều được tạo hóa ban cho lý trí và lương tâm và cần phải đối xử với nhau trong tình anh em. |
| TURKISH | TURKISH | 3 | TURKISH | 93 | tr | 212 | Yukarda mavi gök, asağıda yağız yer yaratıldıkta; ikisinin arasında insan oğlu yaratılmış. İnsan oğulları üzerine ecdadım Bumın hakan, İstemi hakan tahta oturmuş; oturarak Türk milletinin ülkesini, türesini, idare edivermiş, tanzim edivermis. Dört taraf hep düşman imiş. Asker sevk edip dört taraftaki kavmi hep (itaati altına) almış hep muti kılmış. Başlılara baş eğdirmiş, dizlilere diz çöktürmüş. |
| JAPANESE | JAPANESE | 3 | JAPANESE | 7 | ja | 194 | 幸運こううんにも、息子むすこはこの四月しがつから保育園ほいくえんに入はいることができ、私わたしはまた働はたらき始はじめた。 |
| RUSSIAN | RUSSIAN | 2 | RUSSIAN | 1393 | ru | 96 | Все люди рождаются свободными и равными в своем достоинстве и правах. Они наделены разумом и совестью и должны поступать в отношении друг друга в духе братства. |
| FINNISH | FINNISH | 6 | FINNISH | 383 | fi | 125 | Jokaisella on oikeus saada opetusta. Opetuksen on oltava ainakin alkeis- ja perusopetuksen osalta maksutonta. Alkeisopetuksen on oltava pakollinen. Teknistä ja ammattiopetusta on oltava yleisesti saatavilla, ja korkeamman opetuksen on oltava avoinna yhtäläisesti kaikille heidän kykyjensä mukaan. |
| URDU | URDU | 1 | URDU | 22 | ur | 104 | ایک ملک پر سخت گیر بادشاہ حکومت کرتا تھا۔وہ رعایا پر طرح طرح کے ٹیکس عائد کرتا اور ٹیکس کے پیسے دوسرے ممالک میں جاکر فضولیات میں ضائع کرتا۔ |
| THAI | THAI | 1 | THAI | 2 | th | 78 | Hello World สวัสดีชาวโลก |
| MALAY | MALAY | 2 | UNKNOWN | 291 | id | 88 | Pesan moral dari Cerita Rakyat Bawang Merah Bawang Putih adalah Jangan terlalu tamak dan serakah. Setiap orang sudah memiliki rezekinya masing-masing. Orang yang terlalu serakah akan mendapatkan balasan yang setimpal dengan perbuatannya. Selalu berbuat baik lah dalam setiap tingkah laku, maka kita akan mendapatkan kebaikan dan kebahagiaan. |
Source Code
https://gist.github.com/JamoCA/b883fbddf0303df8f4b0d597cfc2ae25
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