I used Jim Breen's excellent WWWJDIC.
There's a romaji entry option on the right of the search box. I entered the phrase and found the kanji representation. (I then consulted a paper copy of Sanseido's excellent Kanji dictionary to see what it had to say, which is where I found the bit about Chinese.)
From that results page:
Search Key: やろうじだい Options: [G]oogle search, [GI] Google images, [S]anseido dictionary, [A]LC dictionary (Eijiro), [Ex]ample sentences, [V]erb conjugations.夜 郎自大 【やろうじだい】 (adj-na,n) throwing one's weight around in a small group without knowing one's real worth in a larger world outside [G][GI][S][A]
Select an action from the following and click on:
New Search Dictionary: Key Type: Text(J/E) RomajiOptions: Starting Kanji Common words Exact word-match
Examine the kanji in a selected compound (Also click on the compound you wish to examine)
Repeat this search (choose another Dictionary above)
You can then choose the option Examine the kanji in a selected compound (Also click on the compound you wish to examine). From there, you get a nice page with encoding information:
夜 4C6B [4475:96e9] U591c B8 C36 G2 S8 F487 N298 V1129 H2056 DK1301 L1037 K258 O766 DO336 MN5763 MP3.0349 E212 IN471 DS144 DF150 DH232 DT169 DC318 DJ93 DB2.17 DG406 P2-2-6 I2j6.1 Q0024.7 DR467 ZPP3-3-5 ZPP3-4-4 Yye4 Wya ヤ よ よる night; evening SOD
郎 4F3A [4726:9859] U90ce B163 G8 S9 S8 XJ1622D 【】F569 N4762 V6138 H1289 DK867 L1851 K237 O1145 DO955 MN39405P MP11.0242 E1936 IN980 DC264 DJ546 DG757 P1-6-3 I2d6.5 Q3772.7 DR844 ZSP1-6-2 Ylang2 Ylang4 Wrang ロウ リョウ おとこ T1 いら お とう もん ろ ろお son; counter for sons SOD
自 3C2B [2811:8ea9] U81ea B132 G2 S6 F19 N3841 V4900 H3525 DK2195 L36 K53 O340 DO60 MN30095 MP9.0403 E134 IN62 DS229 DF242 DH150 DT126 DC14 DJ63 DB2.19 DG1587 P4-6-2 I5c1.1 Q2600.0 DR879 Yzi4 Wja ジ シ みずか.ら おの.ずから おの.ずと T1 より oneself SOD
大 4267 [3471:91e5] U5927 B37 G1 S3 F7 N1171 V1133 H3416 DK2133 L107 K7 O48 DO32 MN5831 MP3.0367 E53 IN26 DS22 DF40 DH25 DT14 DC5 DJ87 DB2.2 DG408 P4-3-4 I0a3.18 Q4003.0 DR1463 Yda4 Ydai4 Wdae Wda Wtae ダイ タイ おお- おお.きい -おお.いに T1 うふ お おう た たかし とも はじめ ひろ ひろし まさ まさる もと わ large; big SOD
While I didn't need to do most of this in this case (I used a cut and paste that worked fine -- if it hadn't, I probably would have instead used the GIF images of each kanji that you can find at Mr. Breen's website), for lots more information about the various codings of each character, you can then visit the Unihan database which is the first link in each entry.
For instance, here is the Unihan database information about the first character (and the phrase in question is mentioned at the of the Japanese usages):
Grid Index Radical-stroke index (36.4-6)
<<< Previous Next >>> Glyphs
The Unicode Standard Your Browser 夜 Encoding Forms
Decimal UTF-8 UTF-16 UTF-32 22812 E5 A4 9C 591C 0000591C IRG Sources
G-source T-source H-source J-source K-source KP-source V-source U-source 0-5239 1-4C5F 0-4C6B 0-6528 KP0-F7E2 1-5145 Mappings to Major Standards
Chinese
GB 2312 GB 12345 CNS 11643-1986 CNS 11643-1992 CCCII Big Five HK SCS 5025 5025 1-4C5F 1-4C5F 21387E A95D Japanese
JIS X 0208 JIS X 0212 JIS X 0213 4475 Korean
KS X 1001:1992 KS X 1002:1991 KPS 9566-97 KPS 10721-2000 6908 F7E2 Other
EACC Xerox PRC Telegraph ROC Telegraph 21387E 244:100 1123 1123 Dictionary Information
IRG Indices
KangXi Morohashi Dae Jaweon Hanyu Da Zidian 0246.180 05763 0490.070 10285.010 Other Indices
Cowles Fenn Karlgren Nelson Mathews Meyer-Wempe Lau 5176 268A 187 0298 7315 3869 3378 Radical-stroke Counts
Unicode KangXi Japanese Korean Morohashi 36.5 36.5 Phonetic Data
Cantonese Mandarin Tang Japanese On Japanese Kun Sino-Korean je6 YE4 *ià YA YO YORU YA Other Dictionary Data
Definition Total Strokes Phonetic Cangjie night, dark; in night; by night 8 170 1522 1556 YONK Variants
Simplified Traditional Semantic Specialized Semantic Z U+4EB1 ( )
Chinese Compounds (drawn largely, but not exclusively, from the CEDICT dictionary file)
晝夜 jau3 ye6 day and night 夜里 ye6 lei5 at night 熬夜 ao2 ye4 ngou4 ye6 stay up late or all night 白夜 bai2 ye4 baak6 ye6 white night 半夜 ban4 ye4 bun3 ye6 midnight; in the middle of the night 半夜三更 ban4 ye4 san1 geng1 in the depth of night; late at night 不夜城 bu2 ye4cheng2 (literally) a city with lights turned on all night--a big city with gay night life 卜晝卜夜 bu3zhou4-bu3 ye4 buk1 jau3 buk1 ye6 day and night; around the clock 不分晝夜 bu4 fen zhou4-ye4 (to work) day and night 徹夜 che4ye4 chit3 ye6 all through the night; from dusk to dawn 初夜權 chuye4quan2 cho1 ye6 kyun4 "jus primae noctis" (the right of a feudal lord to the virginity of a maiden on her; wedding night in medieval Europe) 大年夜 da4nian2ye4 daai6 nin4 ye6 on the night of the lunar new year's eve 寒夜 han2ye4 hon4 ye6 cold night, chilly night 後半夜 hou4ban4ye4 hau6 bun3 ye6 after midnight; the wee hours 即夜 ji2ye4 jik1 ye6 on the very night; within the night; immediately 今夜 今夕 今晚 今宵 jin ye4 jin xi4 jin wan3 jin xiao tonight 沒日沒夜 mei2ri4-mei2ye4 mut6 yat6 mut6 ye6 day an night 每夜 mei3 ye4 mui5 ye6 nightly 年夜飯 nian2 ye4 fan4 nin4 ye6 faan6 New Year's Eve family dinner 年飯 年夜飯 nian2fan4 nian2ye4fan4 dinner for the whole family on the eve of the lunar new year 年夜 nian2ye4 nin4 ye6 New Year's Eve 前夜 qian2ye4 chin4 ye6 the night before the last 日夜 ri4 ye4 yat6 ye6 day and night; around the clock 三更半夜 sangeng-ban4ye4 late at night (usually after midnight) 上半夜 shang4ban4ye4 before midnight 深夜 shen1 ye4 sam1 ye6 very late at night 守夜 shou3ye4 sau2 ye6 to keep night watch 夙興夜寐 su4xing-ye4mei4 to rise early and sleep late; very diligent 夙夜 su4ye4 suk1 ye6 day and night 夙夜匪懈 su4ye4 fei3xie4 to work diligently day and night 天方夜譚 tian fang ye4 tan2 tin1 fong1 ye6 taam4 "Arabian Nights 屋漏偏遭連夜雨 wu lou4 pian zao lian2 ye4 yu3 (literally) The rain fell throughout the night with the roof already leaking--an added misfortune 午夜 wu3 ye4 ng5 ye6 midnight 戊夜 wu4ye4 mou6 ye6 the pre-dawn hours 下半夜 xia4ban4 ye4 after midnight; wee hours 小夜曲 xiao3 ye4 qu3 siu2 ye6 kuk1 serenade 小年夜 xiao3nian2ye4 siu2 nin4 ye6 the night before lunar New Year's Eve 宵夜 xiaoye4 siu1 ye6 a snack before going to bed 巡夜 xun2ye4 cheun4 ye6 to make nightly patrols; a night-watch 夜 ye4 ye6 night 夜不閉戶 ye4 bu2 bi4hu4 There's no need to close doors at night (a description often used to indicate efficient government administration) 夜間 ye4 jian1 ye6 gaan1 nighttime 夜晚 ye4 wan3 ye6 maan5 night 夜以繼日 ye4 yi3 ji4 ri4 night and day; around the clock; day in and day out 夜鶯 ye4 ying1 ye6 ang1 nightingale 夜班 ye4ban ye6 baan1 night shifts; night work 夜半 ye4ban4 ye6 bun3 midnight 夜(叉) ye4cha (in Chinese mythology) a monstrous-looking devil 夜長夢多 ye4chang2-meng4duo (literally) The night is long and dreams many. --There'll be twists and obstacles if a problem or an issue is not settled promptly 夜場 ye4chang3 (chang) ye6 cheung4 night show 夜車 ye4che night train 夜度資 ye4du4zi ye6 dou6 ji1 money charged by a prostitute for boudoir favors for a night 夜工 ye4gong ye6 gung1 night work 夜光杯 ye4guangbei ye6 gwong1 bui1 a wine glass 夜光錶 ye4guangbiao3 ye6 gwong1 biu1 a watch with luminous markings on the dial 夜合花 ye4he2hua ye6 hap6 fa1 magnolia pumila 夜壺 ye4hu2 ye6 wu4 a chamer-pot 夜間 夜晚 夜(裡) ye4jian ye4wan3 ye4li5 the night; night time 夜間部 ye4jianbu4 ye6 gaan1 bou6 the night department (of a school, college, or university) 夜禁 ye4jin4 night curfew 夜驚 ye4jing ye6 ging1 nocturnal phobia 夜景 ye4jing3 ye6 ging2 night scenes (of a locality) 夜靜 ye4jing4 ye6 jing6 the dead of the night; the still of the night 夜課 ye4ke4 ye6 fo3 night classes 夜來香 ye4lai2xiang ye6 loi4 heung1 the tuberose 夜闌人靜 夜深人靜 ye4lan2-ren2jing4 ye4shen-ren2jing4 (in) the quiet of the late night; deep in the night 夜郎自大 ye4lang2 zi4da4 ye6 long4 ji6 daai6 the megalomania of the king of Yelang who asked the envoy of Han which was bigger--the Han Empire or the tiny state of Yelang--braggadocio; ignorant and boastful 夜涼如水 ye4liang2 ru2 shui3 ye6 leung4 yu4 seui2 the chilling (autumn)night 夜盲症 ye4mang2zheng4 night-blindness, of hemeralopia 夜貓子 ye4maozi5 ye6 maau1 ji2 the owl; a person who enjoys night life 夜明珠 ye4ming2zhu ye6 ming4 jyu1 a pearl that shines at night, a legendary treasure 夜勤 ye4qin2 ye6 kan4 night shift; night work (esp. referring to doctors, policemen, newsmen, etc.) 夜色蒼茫 ye4se4 cangmang2 ye6 sik1 chong1 mong4 twilight at dusk 夜市 ye4shi4 ye6 si5 business activities in night hours; markets devoted to nighttime business 夜襲 ye4xi2 ye6 jaap6 night attack; to launch an attack under the cover of night 夜戲 ye4xi4 ye6 hei3 night show; evening performance 夜校 ye4xiao4 a night school 夜行軍 ye4xing2jun night march 夜行人 ye4xing2ren2 night traveles; thieves, etc. who move about at night 夜夜 ye4ye4 ye6 ye6 every night; night after night 夤夜 yin2ye4 yan4 ye6 deep in the night 永夜 yong3ye4 wing5 ye6 a long night 子夜 zi3ye4 ji2 ye6 midnight
Japanese Compounds (drawn from the EDICT dictionary file)
お七夜 おしちや name-giving ceremony 暗夜 あにゃ dark night 暗夜 あんや dark night 闇夜 あにゃ dark night 闇夜 あんや dark night 闇夜 やみよ dark night 一昨々夜 いっさくさくや two nights before last 一昨昨夜 いっさくさくや two nights before last 一昨夜 いっさくや night before last 一昼夜 いっちゅうや a whole day and night/24 hours 一日一夜 いちにちいちや all day and night 一夜 いちや one night/all night/overnight/one evening 一夜 ひとや one night/all night/overnight/one evening 一夜 ひとよ one night/all night/overnight/one evening 一夜乞食 いちやこじき a person made homeless by fire 一夜妻 いちやづま temporary consort/prostitute 一夜妻 ひとよづま temporary consort/prostitute 一夜造り いちやずくり built in a night/stopgap/hastily written 一夜大臣 いちやだいじん overnight millionaire 一夜中 いちやじゅう all night through 一夜中 ひとやじゅう all night through 一夜漬け いちやづけ salted just overnight/cramming 乙夜 いつや about 10 p.m. 乙夜 おつや about 10 p.m. 寒夜 かんや cold night 金剛夜叉妙王 こんごうやしゃみょうおう Vajra-yaksa Vidya-raja (Budd.) 月夜 つきよ moonlit night 甲夜 こうや 8 p.m. 今夜 こんや this evening/tonight 昨夜 さくや last night 昨夜 ゆうべ last night 三日三夜 みっかみよ 3 days and 3 nights 七夜 しちや celebration of a child's seventh day 十五夜 じゅうごや night of the full moon/the night of the 15th day of the 8 lunar month 十三夜 じゅうさんや 13th day (of the moon)/the night of he 13th day of 9th lunar month 十六夜 いざよい 16-day-old moon 夙夜 しゅくや from morning till night/day and night/always 初夜 しょや first night/first watch of the night/bridal night 除夜 じょや New Year's Eve 深夜 しんや late at night 真夜中 まよなか dead of night/midnight 星夜 せいや starry night/starlight night 晴夜 せいや clear night 静夜 せいや quiet night 先夜 せんや few nights ago 千一夜 せんいちや Thousand and One Nights 千夜 せんや many nights 前夜 ぜんや last night/the previous night 前夜祭 ぜんやさい Christmas Eve/the eve (of festival) 昼も夜も ひるもよるも day and night 昼夜 ちゅうや day & night 昼夜を舎かず ちゅうやをおかず continuing day and night 昼夜兼行 ちゅうやけんこう around-the-clock/(working) day and night 通夜 つや all-night vigil over a body/a wake 徹夜 てつや all night/all night vigil/sleepless night 同夜 どうや the same night/that night 日夜 にちや day & night/always 白河夜船 しらかわよふね be fast asleep (and totally unaware of what is going on around one) 白夜 びゃくや white (arctic) night/short night 半夜 はんや midnight 百鬼夜行 ひゃっきやぎょう a veritable pandemonium/a large number of people plotting and doing evil/a scandalous scene 百鬼夜行 ひゃっきやこう a veritable pandemonium/a large number of people plotting and doing evil/a scandalous scene 不夜城 ふやじょう nightless gay quarters/nightless city 夜 よる evening/night 夜々 よよ every evening/night after night 夜々中 よるよなか midnight 夜ごと よごと nightly 夜なべ よなべ night work 夜な夜な よなよな every evening/night after night 夜もすがら よもすがら all night 夜暗 やあん dead of night/shades of night 夜陰 やいん shades of evening/dead of night 夜烏 よがらす night crow 夜雨 やう night rain 夜営 やえい encamping at night 夜伽 よとぎ watching/vigil/watcher 夜稼ぎ よかせぎ night work/burglary 夜会 やかい evening party 夜会結び やかいむすび evening hairdo 夜会服 やかいふく evening dress 夜回り よまわり night watch/night watchman 夜学 やがく evening course/night-school 夜学校 やがっこう night school 夜寒 よさむ night cold/cold night 夜寒 よざむ night cold/cold night 夜間 やかん at night/nighttime 夜間営業 やかんえいぎょう open at night 夜間勤務 やかんきんむ night work 夜間撮影 やかんさつえい night photography 夜間中学 やかんちゅうがく evening middle school 夜間部 やかんぶ night-school season 夜間預金々庫 やかんよきんきんこ night-deposit safe 夜間預金金庫 やかんよきんきんこ night-deposit safe 夜気 やき night air/stillness of night/cool evening 夜汽車 よぎしゃ night train 夜詰め よづめ night watch 夜宮 よみや eve of a festival vigil 夜泣き よなき (vs) crying (of an infant) at night (due to colic) 夜業 やぎょう night work/night shift 夜曲 やきょく nocturne 夜勤 やきん night shift 夜具 やぐ bedding 夜空 よぞら night sky 夜景 やけい night view 夜警 やけい night watchman 夜見の国 よみのくに hades/realm of the dead/the next world 夜見世 よみせ night shop/night fair 夜光 やこう nocturnal luminescence 夜光時計 やこうどけい luminous watch 夜光虫 やこうちゅう phosphorescent animalcule 夜光塗料 やこうとりょう luminous paint 夜攻め よぜめ night attack 夜更かし よふかし staying up late/keeping late hours/sitting up late at night/nighthawk 夜更け よふけ late at night 夜更し よふかし staying up late/keeping late hours/sitting up late at night/nighthawk 夜行 やぎょう walking around at night/night train/night travel 夜行 やこう walking around at night/night train/night travel 夜叉 やしゃ female demon 夜桜 よざくら cherry trees at evening 夜晒 よざらし leaving things exposed outside all night 夜仕事 よしごと night work 夜市 よいち night market 夜襲 やしゅう night attack/nocturnal assault 夜商い よあきない night trading 夜商人 よあきんど night shopkeeper 夜上がり よあがり weather clearing at night 夜色 やしょく shades of night/night scene 夜食 やしょく supper/night meal 夜深い よぶかい (staying) up late at night 夜深け よふけ late at night 夜戦 やせん night warfare 夜船 よふね night boat 夜前 やぜん last night 夜想曲 やそうきょく nocturne 夜鷹 よたか nighthawk/street walker 夜着 よぎ night-clothes/heavy kimono-like quilt 夜中 やちゅう all night/the whole night 夜中 よじゅう all night/the whole night 夜中 よなか midnight/dead of night 夜昼 よるひる day and night 夜長 よなが long night 夜鳥 やちょう nocturnal bird 夜通し よどおし all night 夜釣り よづり night angling 夜店 よみせ night shop/night fair 夜盗 やとう night burglar 夜盗虫 やとうむし cutworm/army worm 夜討ち ようち night attack 夜逃げ よにげ night flight 夜働き よばたらき night work 夜道 よみち street at night/making a night journey 夜凪 よなぎ evening calm 夜尿症 やにょうしょう bed-wetting/enuresis 夜這い よばい night crawling/sneaking visit 夜泊 やはく night mooring 夜半 やはん midnight/dead of night 夜半 よわ midnight/dead of night 夜番 やばん night watch/night sentry 夜番 よばん night watch/night sentry 夜風 よかぜ night wind 夜分 やぶん evening/night/nighttime 夜歩き よあるき walking around at night 夜毎 よごと every night 夜霧 よぎり night fog 夜明かし よあかし staying up all night/all night vigil 夜明け よあけ dawn/daybreak 夜明けの明星 よあけのみょうじょう morning star 夜鳴き よなき crying or singing (of bird, etc.) at night 夜盲症 やもうしょう night blindness 夜目にも明るい よめにもあかるい luminous in the dark 夜夜 よよ every evening/night after night 夜夜中 よるよなか midnight 夜遊び よあそび night amusements 夜来 やらい overnight/since last night 夜嵐 よあらし night storm 夜立ち よだち setting out at night 夜露 よつゆ evening dew/night dew 夜郎自大 やろうじだい throwing one's weight around in a small group without knowing ones' real worth in a larger world outside 夜話 やわ night talks/evening tea parties 夜話 よばなし night talks/evening tea parties 連日連夜 れんじつれんや every day and every night
Other Data
Data type Value kFourCornerCode 0024.7kGSR 0800jkCihaiT 341.401kGradeLevel 2kKangXi 0246.180kFennIndex 621.01kRSAdobe_Japan1_6 C+3831+8.2.6 C+3831+36.3.5kHanyuPinlu ye4(799)kFrequency 3kVietnamese dạkIICore 2.1kHKGlyph 0831kMorohashi 05763kHanYu 10285.010kDaeJaweon 0490.070kHangul 야kSBGY 422.55