Cov txheej txheem:

Dab tsi yog qhov kev siv ntawm super lo lus tseem ceeb hauv Java?
Dab tsi yog qhov kev siv ntawm super lo lus tseem ceeb hauv Java?

Video: Dab tsi yog qhov kev siv ntawm super lo lus tseem ceeb hauv Java?

Video: Dab tsi yog qhov kev siv ntawm super lo lus tseem ceeb hauv Java?
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Kev siv Java super Keyword

  • super tuaj yeem yog siv xa mus rau tam sim niam txiv chav piv txwv piv txwv.
  • super tuaj yeem yog siv kom hu ua niam txiv txoj hauv kev tam sim ntawd.
  • super () ua tau siv kom hu tam sim niam txiv chav tsev tsim.

Ntxiv mus, dab tsi yog qhov kev siv ntawm super lo lus tseem ceeb?

Cov super lo lus tseem ceeb hais txog superclass (niam txiv) khoom. Nws yog siv los hu rau superclass txoj kev, thiab nkag mus rau lub superclass constructor. Feem ntau siv ntawm super lo lus tseem ceeb yog kom tshem tawm qhov tsis meej pem ntawm superclasses thiab subclasses uas muaj cov txheej txheem nrog tib lub npe.

Tsis tas li ntawd, peb qhov kev siv ntawm Java super lo lus tseem ceeb hauv Java yog dab tsi?

  • super variable hais txog tam sim niam txiv hauv chav kawm piv txwv.
  • super variable tuaj yeem hu tam sim niam txiv txoj hauv kev.
  • super() ua raws li cov niam txiv tam sim hauv chav tsev tsim thiab yuav tsum yog thawj kab hauv tus menyuam chav tsev tsim.

Ib yam li ntawd, koj tuaj yeem nug, dab tsi yog siv lo lus tseem ceeb hauv Java?

Lus txhais thiab Kev siv Qhov no lo lus tseem ceeb hais txog cov khoom tam sim no nyob rau hauv ib txoj kev los yog constructor. Feem ntau siv qhov no lo lus tseem ceeb yog kom tshem tawm qhov tsis meej pem ntawm chav kawm cov yam ntxwv thiab cov tsis muaj tib lub npe (vim tias chav kawm tus cwj pwm yog shadowed los ntawm ib txoj kev los yog constructor parameter).

Dab tsi yog siv lo lus tseem ceeb kawg hauv Java?

Hauv Java programming lus, lo lus tseem ceeb kawg yog siv nyob rau hauv ob peb lub ntsiab lus los txhais ib qho chaw uas tsuas yog muab ib zaug xwb. Ib zaug ib kawg variable tau raug muab, nws ib txwm muaj tib tus nqi.

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