Nyob hauv Java, kev sau npe yog qhov tseem ceeb uas pab cov neeg tsim tawm kom taug qab qhov yuam kev. Java yog hom lus programming uas los nrog kev nkag mus kom ze. Nws muab qhov Kev Nkag Siab API uas tau qhia hauv Java 1.4 version. Nws muab lub peev xwm los ntes cov ntaub ntawv teev cia.
Vim li cas peb thiaj li xav tau ntawv?
Muab cov ntaub ntawv tsim nyog - Kev txiav yog yog qhov tseem ceeb ntawm cov ntoouas yog siv rau ntau tus tib neeg xav tau xws li muab cov khoom siv, flooring ntoo, rooj tog zaum, roj rau kev lag luam thiab tsev, khoom siv ncaws pob thiab lwm yam khoom siv.
Puas yog kev txiav txim siab cuam tshuam rau kev ua haujlwm Java?
Java logging hnyav cuam tshuam rau kev ua haujlwm ntawm koj daim ntawv thov. Nws qhov kev nkag siab zoo uas ntau koj nkag, ntau koj ua cov ntaub ntawv IO uas ua rau koj daim ntawv thov qeeb. Yog vim li cas thiaj xaiv java logging theem rau txhua lo lus tseem ceeb heev.
Kev txiav txim siab txo qis kev ua haujlwm?
Puas kev kaw tseg txo qis kev ua haujlwm ntawm daim ntawv thov? Yes.
Puas GC logging cuam tshuam kev ua haujlwm?
1 Teb. Yes it do. Thaum koj pom koj tus kheej nyob rau hauv ib qho chaw uas koj yuav tsum tau qhib JVM thiab / lossis GC, qhov ntawd txhais tau tias koj lub cev muaj teeb meem tuav lub nra.
