2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Cov no yog:
- ConsoleAppender: Console Appends ntxiv cov xwm txheej teev cia rau System. …
- FileAppender: Ntxiv cov xwm txheej teev cia rau hauv cov ntaub ntawv. …
- RollingFileAppender, DailyRollingFileAppender: Ob leeg yog cov khoom siv dav tshaj plaws uas muab kev txhawb nqa los sau cov ntawv teev cia.
Yuav ua li cas ntawm cov hauv qab no yog qhov kev txiav txim siab siv tau?
A - log4j yog qhov txhim khu kev qha, nrawm thiab hloov pauv hloov pauv (APIs) sau hauv Java, uas tau muab faib raws li Apache Software License. B - log4j tau xa mus rau C, C ++, C, Perl, Python, Ruby, thiab Eiffel lus. C - log4j yog configurable heev los ntawm sab nraud configuration ntaub ntawv ntawm runtime.
Yuav ua li cas sau npe Appenders?
Tus appender yog yog ib feem ntawm kev kaw lus uas yog lub luag haujlwm xa cov lus kaw mus rau qee qhov chaw lossis nruab nrab.
Qhov twg hauv qab no yog cov khoom tseem ceeb ntawm log4j?
log4j muaj peb yam tseem ceeb:
- loggers: Lub luag haujlwm rau kev ntes cov ntaub ntawv nkag.
- appenders: Lub luag haujlwm tshaj tawm cov ntaub ntawv nkag mus rau ntau qhov chaw nyiam.
- layouts: Lub luag haujlwm rau formatting logging cov ntaub ntawv nyob rau hauv ntau hom.
Log4j cov ntaub ntawv yog dab tsi?
Apache Log4j yog a Java-based logging utility. Nws yog Ameslikas sau los ntawm Ceki Gülcü thiab yog ib feem ntawm Apache LoggingKev pab cuam ntawm Apache Software Foundation. Log4j yog ib qho ntawm ntau Java logging moj khaum.
Pom zoo:
Cov khoom xyaw twg hauv qab no ua cov tshuaj tsw qab hauv cov tshuaj txhuam hniav?
Sodium lauryl sulfate (SLS) yog surfactant feem ntau siv. YPuas yog tshuaj txhuam hniav puas yog surfactant? Surfactants. Ntau, txawm tias tsis yog tag nrho, tshuaj txhuam hniav muaj sodium lauryl sulfate (SLS) lossis lwm yam surfactants (detergents).
Ntawm qhov twg ntawm cov ces kaum hauv qab no yog cov haujlwm cosecant tsis tau txhais?
Qhov tseeb, tus nqi xa rov qab los ntawm kev ua haujlwm cosecant rau lub kaum sab xis ntawm xoom degrees lossis ib puas yim caum degrees yog suav tias yog tsis tau txhais, txij li qhov sib npaug csc (θ)= 1 / sin θ ) yuav suav nrog kev faib los ntawm xoom.
Ntawm twg ntawm cov ces kaum hauv qab no yog cov haujlwm secant tsis tau txhais?
Qhov tseeb, tus nqi xa rov qab los ntawm kev ua haujlwm secant rau ib lub kaum sab xis ntawm cuaj caum degrees lossis ob puas thiab xya caum degrees yog suav tias yog tsis tau txhais, txij li qhov sib npaug sec (θ)= 1 / cos θ ) yuav suav nrog kev faib los ntawm xoom.
Dab tsi ntawm cov hauv qab no yog siv rau hauv cov thermite vuam?
In thermite welding, aluminium hmoov yog siv nrog rau ferric oxide. Aluminium muaj ntau affinity ntawm oxygen thiab nws txo cov ferric oxide rau elemental hlau thaum vuam thiab kuj ua rau kub heev. Lub molten elemental hlau yog li tsim yuav kaw qhov tawg kom muaj kev sib raug zoo.
Leej twg ntawm cov hauv qab no tau yeej txoj kev xav ntawm organicism?
Thaum tig ntawm lub xyoo pua 18th, Immanuel Kanttau txhawb nqa kev xav ntawm cov organicisitic los ntawm kev ntxhov siab, hauv nws cov ntawv sau, "kev cuam tshuam ntawm lub cev thiab nws qhov chaw [,] thiab lub voj voog causality "
