プロジェクトマネージャ試験対策 vs Oracle Java SE 21 Developer

［選択］で、学習する問題を選びます。午前2問題のみの選択もできます。 ［問題］で、選択肢から、解答を選びます。解答を選ぶと［解説］画面に変わります。 ［解説］で、○（正解）、×（間違い）を確認します。全ての問題の解説を記載しています。チェックをつけておけば、あとから振り返るときに便利です。 ［一覧］は、選択した学習問題の一覧です。 ［集計］は、解答日別に、解答数、正解数、間違い数、正答率を表示します。 [メモ] は、メモを8つまで作成できます。問題によってはpointを登録していますので、メモに追加できます。共有ボタン(□に↑)をタッチすれば、メモをファイルに保存したり、メールで送ることができます。

Prepare for Oracle Java SE 21 Developer with one connected flow from core concepts to practice, review, and mock exams. Official credential reference: Oracle Java SE 21 Developer Professional The current question bank contains 500 questions. Study in 50-question sets or focus by domain, subdomain, and difficulty. Single-select and multiple-select items are supported where applicable. Immediately after answering, check the correct-answer explanation and the reasoning for every choice so you understand both why the answer is correct and why the alternatives do not fit. Structured study and records • 50-question set learning plus domain, subdomain, and difficulty filters • Immediate grading, correct-answer explanations, and choice-by-choice rationales • Separate saved progress and resume for set, domain, and difficulty study and for mock exams • A study-history calendar with daily question and key-term activity, monthly totals, and study streaks • Review of wrong answers, repeated misses, review notes, and weak-area analysis • Timed mock exams that hide explanations until submission, allow answer changes before submission, and show results by domain • Weekly goal reminders with a configurable notification time • Light, dark, and system themes A smooth learning flow Move quickly among Home, Study, Review, Mock Exam, and Settings. Each mode keeps its own learning state, and moving to the next item after a long explanation automatically returns the new question card to the top. Basic terms and optional audio study Use the basic-term flashcards as the primary memorization tool. When useful, turn on automatic audio playback to repeat key terms while walking, resting, or preparing for sleep without continuously reading the screen. The questions in this app are current as of August 2026, and we plan to review and update every exam’s question bank at least once a year. The questions are independently authored for study and do not reproduce live exam items, dumps, leaked questions, or third-party question banks. This is an independent study app and is not affiliated with, endorsed by, or sponsored by any certification body, exam provider, or trademark owner. Exam names and trademarks belong to their respective owners.