CodeGym /ื‘ืœื•ื’ Java /Random-HE /ืื•ืจืงืœ ืžื•ืกืžืš ืฉื•ืชืฃ ื‘ืคื•ืขืœ. ืžืชื›ื•ื ื ื™ื ืœื”ืกืžื›ื”
John Squirrels
ืจึธืžึธื”
San Francisco

ืื•ืจืงืœ ืžื•ืกืžืš ืฉื•ืชืฃ ื‘ืคื•ืขืœ. ืžืชื›ื•ื ื ื™ื ืœื”ืกืžื›ื”

ืคื•ืจืกื ื‘ืงื‘ื•ืฆื”
ื”ื™ื•ื ืื ื™ ืจื•ืฆื” ืœื“ื‘ืจ ืขืœ ืื™ืš ืขื‘ืจืชื™ ืืช ื”ื”ืกืžื›ื” ื”ืจืืฉื•ื ื” ืฉืœื™ ื‘-Oracle. ืื•ืจืงืœ ืžื•ืกืžืš ืฉื•ืชืฃ ื‘ืคื•ืขืœ.  ื”ื›ื ื” ืœื”ืกืžื›ื” - 1

ื”ืžื‘ื—ืŸ

Oracle Certified Associate Java SE Programmer (1Z0-808) ื”ื•ื ื”ืฉืœื‘ ื”ืจืืฉื•ืŸ ืฉืœ ื”ืกืžื›ื” ืฉืœ Oracle ื‘ื“ืจืš ืœื”ืคื•ืš ืœืžืคืชื— Java ืžืงืฆื•ืขื™. ื”ืกืžื›ื” ื–ื• ืžื”ื•ื•ื” ืื™ืฉื•ืจ ืœื›ืš ืฉื™ืฉ ืœืš ื™ื“ืข ื‘ืกื™ืกื™ ื‘ืฉืคื”. ื ื™ืชื ื•ืช ืœืš 2.5 ืฉืขื•ืช ืœืกื™ื™ื ืืช ื”ื‘ื—ื™ื ื”. ื”ื•ื ืžื•ืจื›ื‘ ืž-70 ืฉืืœื•ืช ืจื‘ ื‘ืจื™ืจื”. ืฆื™ื•ืŸ ืขื•ื‘ืจ ื”ื•ื 65%. ื ื™ืชืŸ ืœืžืฆื•ื ืจืฉื™ืžื” ืฉืœ ื ื•ืฉืื™ื ื‘ื“ืฃ ื”ื‘ื—ื™ื ื” ื‘ืœืฉื•ื ื™ืช ืกืงื™ืจืช ื ื•ืฉืื™ ื‘ื—ื™ื ื•ืช. ื”ื‘ื—ื™ื ื” ืขื•ืœื” 150 ื“ื•ืœืจ.

ืžื˜ืจื•ืช

ืœืžืขืŸ ื”ืืžืช, ื”ืจื‘ื” ื–ืžืŸ ืœื ื™ื›ื•ืœืชื™ ืœื”ื—ืœื™ื˜ ืื ื›ื“ืื™ ืœืงื‘ืœ ืชืขื•ื“ื” ื‘ื›ืœืœ. ืื ืฉื™ื ืจื‘ื™ื ื—ื•ืฉื‘ื™ื ืฉื–ื” ื‘ื–ื‘ื•ื– ื–ืžืŸ ืžื›ื™ื•ื•ืŸ ืฉื”ื‘ื™ืฆื•ืขื™ื ืฉืœืš ื‘ืžื‘ื—ื ื™ื ืื™ื ื ืžืฉืงืคื™ื ืืช ืจืžืช ื”ื™ื“ืข ืฉืœืš, ืืœื ืืช ืจืžืช ื”ื”ื›ื ื” ืฉืœืš ืœื‘ื—ื™ื ื” ืžืกื•ื™ืžืช. ืื ืฉื™ื ืจื‘ื™ื ืžืจื’ื™ืฉื™ื ืฉื™ืฉ ื—ื‘ื•ืจื” ืฉืœ ืฉืืœื•ืช ื˜ืจื™ืง, ืฉื‘ื”ืŸ ืžืฉืชืžืฉื™ื ื‘ืกื•ื’ืจื™ื™ื ื‘ืงื•ื“ ื•ืœื ื‘ืกื•ื’ืจื™ื™ื ืžืกื•ืœืกืœื™ื, ื›ืš ืฉื”ื•ื ืœื ื™ืชื‘ืฆืข ืงื•ืžืคื™ืœืฆื™ื”. ืขื ื–ืืช, ื”ื™ื• ืœื™ ืกื™ื‘ื•ืช ืžืฉืœื™:
  1. ื–ื• ื”ื–ื“ืžื ื•ืช ืœื”ืฉืœื™ื ืืช ื”ื—ืกืจ ื‘ื™ื“ืข ืฉืœื™, ืœื‘ื ื•ืช ืืช ื”ื‘ืกื™ืก ื”ืชื™ืื•ืจื˜ื™ ืฉืœื™ ื•ืœื”ืขืžื™ื“ ื”ื›ืœ ื‘ืžืงื•ืžื•.
  2. ื”ืคื™ื›ืชื™ ืœืื™ืฉ ืžืงืฆื•ืข ืžื•ืกืžืš ืžื•ืฉื›ืช ืืช ืชืฉื•ืžืช ื”ืœื‘ ืฉืœ ืžื’ื™ื™ืกื™ื ืžื—ื‘ืจื•ืช ืฉื•ื ื•ืช, ื•ื‘ืžืฉื ื•ืžืชืŸ ื™ื›ื•ืœืชื™ ืœื”ืฉืชืžืฉ ื‘ืชืขื•ื“ื” ื›ืขื™ืœื” ืœื”ืขืœืื” ื‘ืฉื›ืจ.
  3. ื•ืื ื”ืžืขืกื™ืง ื”ื•ืœืš ืœืฉืœื, ืื– ืœืžื” ืœื?

ืชื–ืžื•ืŸ ื•ืขืžืœื•ืช

ื›ื“ื™ ืœื”ื™ืžื ืข ืžื“ื—ื™ื™ื ื•ืช ื•ื›ื“ื™ ืœืงื‘ื•ืข ืœืขืฆืžื™ ืื™ื–ืฉื”ื• ืžื•ืขื“ ืื—ืจื•ืŸ, ื”ื—ืœื˜ืชื™ ืœืฉืœื ืขืœ ื”ื”ืกืžื›ื” ืžื™ื“ ื•ืงื‘ืขืชื™ ืืช ืžื•ืขื“ ื”ื‘ื—ื™ื ื” ืœ-3 ืฉื‘ื•ืขื•ืช ื‘ื—ื•ืฅ. ื›ื“ื™ ืœืขืฉื•ืช ื–ืืช, ืืชื” ืฆืจื™ืš ืœืžืฆื•ื ืžืจื›ื– ื‘ื“ื™ืงื” ื‘ืขื™ืจ ืฉืœืš (ื‘ื“ืจืš ื›ืœืœ Pearson VUE ), ืœื”ื™ืจืฉื ื”ืŸ ื‘ืืชืจ ื”ืื™ื ื˜ืจื ื˜ ืฉืœื”ื ื•ื”ืŸ ื‘ืืชืจ ืื•ืจืงืœ, ื•ืœืื—ืจ ืžื›ืŸ ืœืงืฉืจ ืืช ื”ื—ืฉื‘ื•ื ื•ืช. ื”ืงืคื“ ืœื”ื–ื™ืŸ ืืช ื”ื ืชื•ื ื™ื ื”ืื™ืฉื™ื™ื ืฉืœืš ื‘ืฆื•ืจื” ื ื›ื•ื ื”, ืžื›ื™ื•ื•ืŸ ืฉืืชื” ื™ื›ื•ืœ ืœืฉื ื•ืช ืื•ืชื ืจืง ืขืœ ื™ื“ื™ ืคื ื™ื™ื” ืœืฉื™ืจื•ืช ืชืžื™ื›ืช ื”ืœืงื•ื—ื•ืช. ืœืื—ืจ ืฉื ืจืฉืžืช, ืขืœื™ืš ืœื‘ื—ื•ืจ ื‘ื—ื™ื ื”, ืžืจื›ื– ื”ืกืžื›ื” ืžืงื•ืžื™, ืืช ื”ืชืืจื™ืš ื•ื”ืฉืขื” ืฉืœ ื”ื‘ื“ื™ืงื” ื•ืœื‘ืฆืข ืืช ื”ืชืฉืœื•ื ืฉืœืš. ื™ืฉื ืŸ ืฉืชื™ ืืคืฉืจื•ื™ื•ืช ืชืฉืœื•ื: ื‘ืืžืฆืขื•ืช ืฉื˜ืจ ืฉื”ื•ืฆื ืขืœ ื™ื“ื™ ืื•ืจืงืœ (ืœื ื‘ืจื•ืจ ืื™ืš ืœืฉืœื ื•ื™ืฉ ืชื•ืกืคืช ืฉืœ 20% ืขืžืœื”), ืื• ื™ืฉื™ืจื•ืช ื“ืจืš Pearson VUE. ืขื“ื™ืฃ ืœืฉืœื ื“ืจืš ืžืจื›ื– ื”ื‘ื“ื™ืงื•ืช - ื ื•ื— ื™ื•ืชืจ ื•ืคื—ื•ืช ื™ืงืจ.

ื”ื›ื ื”

ืœื”ื›ื ื”, ื”ืฉืชืžืฉืชื™ ื‘ืฉื ื™ ืžืงื•ืจื•ืช:
  1. ื”ืกืคืจ OCA/OCP Java SE 8 Programmer Practice Tests ืžืืช ืกืงื•ื˜ ืกืœื™ืงื•ืฃ ื•ื–'ืืŸ ื‘ื•ื™ืืจืกืงื™.

    ื”ื•ื ืžื›ื™ืœ 450 ืฉืืœื•ืช ืœื“ื•ื’ืžื” ื•ื‘ื—ื™ื ืช ืชืจื’ื•ืœ ืจื‘-ื‘ืจื™ืจื” ืื—ืช ื‘ืช 80 ืฉืืœื•ืช, ื›ืžื• ื’ื ื”ืกื‘ืจื™ื. ืžื˜ืขืžื™ ื ื•ื—ื•ืช, ืืชื” ื™ื›ื•ืœ ืœื”ืฉืชืžืฉ ื‘ืืชืจ ื–ื” ื•ืœื’ืฉืช ืœื‘ื—ื™ื ื•ืช ื”ืชืจื’ื•ืœ ื‘ืื•ืคืŸ ืžืงื•ื•ืŸ . ื–ื” ืกื•ืคืจ ื ื•ื— - ืืชื” ื™ื›ื•ืœ ืœื’ืœื•ืช ืžื™ื“ ืื ื”ืชืฉื•ื‘ื•ืช ืฉืœืš ื ื›ื•ื ื•ืช, ืœืงืจื•ื ื”ืกื‘ืจื™ื ื”ืงืฉื•ืจื™ื ื•ืœืจืื•ืช ืกื˜ื˜ื™ืกื˜ื™ืงื•ืช ื›ืœืœื™ื•ืช ืขื‘ื•ืจ ื›ืœ ื”ืžื‘ื—ื ื™ื. ื›ื‘ืจ ื”ื›ืจืชื™ ืืช ื”ืกืคืจ ื”ื–ื”. ื—ืœืง ืžื”ืžื™ื“ืข ืžื•ืคืจืฉ, ื•ื”ืฆื™ื•ืŸ ื”ืžืžื•ืฆืข ืฉืœื™ ื‘ื›ืœ ื”ืžื‘ื—ื ื™ื ื”ื™ื” 79%.

    ื™ืฉ ืœื™ ืจื’ืฉื•ืช ืžืขื•ืจื‘ื™ื ืœื’ื‘ื™ ื”ืกืคืจ ื”ื–ื”: ื™ืฉ ื”ืจื‘ื” ืฉื’ื™ืื•ืช ื”ืงืœื“ื”, ื”ืจื‘ื” ืฉืืœื•ืช ื˜ืจื™ืง ืžื™ื•ืชืจื•ืช ื•ื”ืฉืืœื•ืช ื‘ื“ืจืš ื›ืœืœ ื”ืจื‘ื” ื™ื•ืชืจ ืงืœื•ืช ืžืืฉืจ ื‘ื‘ื—ื™ื ื” ืขืฆืžื”. ืื– ื‘ื”ื›ื ื•ืช ืฉืœืš, ืœื ื”ื™ื™ืชื™ ืžืžืœื™ืฅ ืœื”ื’ื‘ื™ืœ ืืช ืขืฆืžืš ืœืกืคืจ ื”ื–ื”.

  2. ื”ื“ืจื›ื” ืž- Enthuware .

    ื–ื” 10 $ ืขื‘ื•ืจ ืžื ื•ื™ ื—ืฆื™ ืฉื ืชื™ ืœื’ืจืกืช ื”ืื™ื ื˜ืจื ื˜ ื›ืžื• ื’ื ืœื’ืจืกืช ืฉื•ืœื—ืŸ ื”ืขื‘ื•ื“ื” ื”ื‘ืœืชื™ ืžื•ื’ื‘ืœืช.

    ื”ื”ื›ื ื” ื”ื–ืžื™ื ื” ื›ืืŸ ื”ื™ื ื‘ืขืจืš ื›ืžื• ืขื ื”ืกืคืจ ื”ืžื•ื–ื›ืจ ื‘ืคืกืงื” ื”ืจืืฉื•ื ื”: 600+ ืฉืืœื•ืช ื™ื—ื“ ืขื ื”ืกื‘ืจื™ื. ืื‘ืœ ื”ืฉืืœื•ืช ื›ืืŸ ืœื ื›ื•ืœืœื•ืช ื˜ืขื•ื™ื•ืช. ืœื›ืœ ืฉืืœื” ืžืกืคืจ ืชืฉื•ื‘ื•ืช ืืคืฉืจื™ื•ืช, ื•ืœื›ืœ ืฉืืœื” ื™ืฉ ื”ืกื‘ืจื™ื ื‘ืกื•ืฃ ื”ืกืคืจ.

    ื•ื–ื” ืžืžืฉ ืฉื•ื•ื” ืืช ื–ื”. ื”ืฉืืœื•ืช ื‘ืžื‘ื—ื ื™ ื”ืžื“ื•ืžื” ื”ืชื‘ืจืจื• ื›ื”ืชืืžื” ืžื•ืฉืœืžืช, ืื ืœื, ืื– ื”ื›ื™ ื“ื•ืžื•ืช ืœืฉืืœื•ืช ื‘ื‘ื—ื™ื ื” ื”ืืžื™ืชื™ืช. ืื– ืื ื™ ืžืžืœื™ืฅ ื‘ื—ื•ื ืœื‘ื–ื‘ื– ืืช $10 ื•ืœืงื‘ืœ ื’ื™ืฉื” ืœืžืฉืื‘ ื”ื”ื“ืจื›ื” ื”ื ื”ื“ืจ ื”ื–ื”. ื›ืืŸ ื”ืฆื™ื•ืŸ ื”ืžืžื•ืฆืข ืฉืœื™ ื‘ืžื‘ื—ื ื™ื ื”ื™ื” 69%.

ืขื•ื‘ืจ ืืช ื”ื‘ื—ื™ื ื”

ื‘ื™ื•ื ื”ื ื‘ื—ืจ ื™ืฉ ืœื”ื’ื™ืข ืœืžืจื›ื– ื”ื”ืกืžื›ื” 20 ื“ืงื•ืช ืœืคื ื™ ื”ื‘ื—ื™ื ื”. ื—ืฉื•ื‘ ืœืฆื™ื™ืŸ ื›ื™ ื™ืฉ ืœื”ื‘ื™ื ืขืžื›ื ืฉืชื™ ืฆื•ืจื•ืช ื–ื™ื”ื•ื™. ืคืกืคืกืชื™ ืืช ื”ื ืงื•ื“ื” ื”ื–ื•, ืื‘ืœ ืœืžื–ืœื™ ื‘ื ื•ืกืฃ ืœืจื™ืฉื™ื•ืŸ ื”ื ื”ื™ื’ื” ื”ื™ื” ืœื™ ืืช ื”ื“ืจื›ื•ืŸ ื‘ื›ื™ืก ื”ื–'ืงื˜. ืœืžื” ื–ื” ื ื“ืจืฉ, ืื ื™ ืขื“ื™ื™ืŸ ืœื ืžื‘ื™ืŸ, ืื‘ืœ ืขื“ื™ื™ืŸ, ื›ื“ืื™ ืœื–ื›ื•ืจ. ืœืื—ืจ ืฉืชืžืœืื• ืืช ื›ืœ ื”ื˜ืคืกื™ื, ืชืชื‘ืงืฉื• ืœืจื•ืงืŸ ืืช ื”ื›ื™ืกื™ื ืžืชื›ื•ืœืชื (ืชืขื•ื“ื•ืช ื–ื”ื•ืช, ืžืคืชื—ื•ืช, ืฉืขื•ื ื™ื, ื›ืจื˜ื™ืกื™ ื‘ื ืง, ืฆ'ืงื™ื ื•ื›ืœ ื”ืฉืืจ). ื•ืื– ื”ื ื™ื•ื‘ื™ืœื• ืื•ืชืš ืœืžื—ืฉื‘ ืฉืœืš. ื”ื‘ื—ื™ื ื” ืžืชื•ืขื“ืช ื‘ื•ื™ื“ืื•. ื”ื ื ื•ืชื ื™ื ืœืš ื’ื™ืœื™ื•ืŸ ืœืžื™ื ืฆื™ื” ื•ื˜ื•ืฉ ืฉืืชื” ื™ื›ื•ืœ ืœื”ืฉืชืžืฉ ื‘ื”ื ื›ื“ื™ ืœืจืฉื•ื ื›ืžื” ื”ืขืจื•ืช. ื”ื‘ื—ื™ื ื” ื”ืชื‘ืจืจื” ื›ืงืฉื”. ื›ืฉื”ืชื›ื•ื ื ืชื™, ืงืจืืชื™ ืฉื•ื‘ ื•ืฉื•ื‘ ืฉืžื‘ื—ื ื™ Enthuware ืงืฉื™ื ื™ื•ืชืจ ืžื”ื‘ื—ื™ื ื” ื‘ืคื•ืขืœ, ื•ืžื›ื™ื•ื•ืŸ ืฉื ื›ืฉืœืชื™ ืจืง ื‘ืื—ืช ืžืชื•ืš ืฉืžื•ื ื” ื‘ื—ื™ื ื•ืช ืชืจื’ื•ืœ ืฉืœ Enthuware, ื”ื’ืขืชื™ ื‘ื‘ื™ื˜ื—ื•ืŸ ืžืœื ืฉืืขื‘ื•ืจ. ืœืžืขืฉื”, ืื ื™ ืœื ื™ื›ื•ืœ ืœื•ืžืจ ืฉื”ืฉืืœื•ืช ื”ื™ื• ืงืœื•ืช ื™ื•ืชืจ. ื”ื ื”ื™ื• ื“ื•ืžื™ื, ืื‘ืœ ื‘ื”ื—ืœื˜ ืœื ืงืœื™ื ื™ื•ืชืจ. ื›ืžื• ื›ืŸ, ืœื ื”ื™ื™ืชื” ืฉืืœืช ื˜ืจื™ืง ืื—ืช. ืขื‘ืจืชื™ ืืช ื”ื‘ื—ื™ื ื” ื‘ืฆื™ื•ืŸ ืฉืœ 81%. ื”ื ื”ื•ื“ื™ืขื• ืœื™ ืขืœ ื”ืฆื™ื•ืŸ ืฉืœื™ ืžื™ื“ ืขื ืกื™ื•ื ื”ื‘ื—ื™ื ื”. ืชื•ืš 30 ื“ืงื•ืช ืงื™ื‘ืœืชื™ ืืช ื”ืชื•ืฆืื•ืช ื‘ืžื™ื™ืœ, ื•ืชื•ืš 48 ืฉืขื•ืช ืงื™ื‘ืœืชื™ ืืช ื”ืชืขื•ื“ื” ืขืฆืžื” ื‘ืฆื•ืจื” ืืœืงื˜ืจื•ื ื™ืช. ื”ืชื•ืฆืื•ืช ื›ื•ืœืœื•ืช ืจืฉื™ืžื” ืฉืœ ื ื•ืฉืื™ื ืฉื‘ื”ื ืขืฉื™ืช ื˜ืขื•ื™ื•ืช. ืื’ื‘, ื›ืš ื ืจืื™ืช ื”ืชืขื•ื“ื” ืขืฆืžื”: ืื•ืจืงืœ ืžื•ืกืžืš ืฉื•ืชืฃ ื‘ืคื•ืขืœ.  ื”ื›ื ื” ืœื”ืกืžื›ื” - 2ื‘ืกื•ืคื• ืฉืœ ื“ื‘ืจ, ืื ื™ ื™ื›ื•ืœ ืœื•ืžืจ ืฉืื ื™ ืœื ืžืชื—ืจื˜ ืขืœ ื”ื–ืžืŸ ืฉื”ืฉืงืขืชื™ ื›ื“ื™ ืœื”ืฉื™ื’ ืืช ื”ื”ืกืžื›ื”. ื”ื™ื• ื”ืจื‘ื” ืฉืืœื•ืช ืžืขื ื™ื™ื ื•ืช ืœืžื‘ื—ืŸ, ื•ื”ื ื•ืฉืื™ื ืฉื ืกืงืจื• (ื‘ืžื™ื•ื—ื“ ื‘ื‘ื—ื™ื ื” ื–ื•) ื”ื ื“ื‘ืจื™ื ื”ืžืฉืžืฉื™ื ื‘ืขื‘ื•ื“ื” ื™ื•ืžื™ื•ืžื™ืช. ื–ื›ื™ืชื™ ืœืชื•ืืจ ืžื•ืžื—ื” ืžื•ืกืžืš, ืื‘ืœ ื”ื›ื™ ื—ืฉื•ื‘, ื—ื™ื–ืงืชื™ ืืช ื”ื™ื“ืข ืฉืœื™.
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