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Oracle 1z0-809日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Lambda Expressions and Functional Interfaces | 15% | - Use primitive and binary variants of functional interfaces - Use method references - Use built-in functional interfaces: Predicate, Consumer, Function, Supplier - Create and use lambda expressions |
| Exceptions and Assertions | 8% | - Use assertions - Use try-catch, multi-catch, finally - Use try-with-resources - Create custom exceptions |
| Concurrency | 12% | - Control thread lifecycle and synchronization - Create threads: Thread class, Runnable, ExecutorService - Use java.util.concurrent components - Use Executors, Callable, Future |
| Generics and Collections | 15% | - Use Collections Framework: List, Set, Map, Queue - Analyze type safety and type erasure - Use generic classes, interfaces, and methods - Sort and search collections |
| Java I/O and NIO.2 | 8% | - Read/write with java.io API - Stream operations on files - Use Path, Files, FileSystem API |
| Advanced Java Class Design | 10% | - Use enumerated types - Use abstract classes and methods - Create inner classes: static, local, nested, anonymous - Use final keyword |
| Localization | 5% | - Format numbers, dates, messages - Work with resource bundles - Use Locale class |
| Java Stream API | 15% | - Describe Stream interface and pipeline - Filter, map, and process streams - Use terminal operations: collect, reduce, count - Work with Optional class |
| Java Class Design | 15% | - Override hashCode, equals, and toString methods - Create singleton and immutable classes - Use static keyword in blocks, variables, methods, classes - Implement inheritance including visibility modifiers and composition - Implement encapsulation - Implement polymorphism |
| Java SE 8 Date/Time API | 7% | - Work with Period, Duration, time zones - Format and parse dates/times - Use LocalDate, LocalTime, LocalDateTime, Instant |
| JDBC | 5% | - Process resultsets - Connect to database - Execute queries and updates |
The Oracle 1z0-809日本語 Exam: What to Know
Yes:
Build your knowledge base with official training, then go over the 209 practice questions for the Oracle Java SE 8 Programmer II (1z0-809日本語版) — that combination is the actual plan.
Must pass 1Z0-808 (Java SE 8 Programmer I) to earn the certification Rules on eligibility change occasionally, so confirm the current requirements on the official page (official 1z0-809日本語 exam page) before you pay the fee.
120 minutes for 68 questions. Adapt to the clock now: the TorrentExam SOFT and APP versions let you control test time and track scores, so the real 1z0-809日本語 exam feels like a rehearsal you've already done.
Delivery: payment triggers an automatic email within a minute — download immediately, install without limits, and if nothing arrives within 2 hours our round-the-clock support helps (check spam first). Refund: unlike vendors with slow, cumbersome processes, we keep it clear — take the corresponding 1z0-809日本語 exam within 60 days of purchase, and if you fail, send a scanned enrollment slip plus the official Score Report PDF within 2 days of the exam; the full refund is processed within 7 days. Excluded: exams within 3 days of purchase, candidate names that don't match the payer, and free or expired products. Or exchange for two equal-value products free.
Yes — three different free Oracle Java SE 8 Programmer II (1z0-809日本語版) demos are available to download. Do the demo test first to inspect the value, then decide. Purchases include 365 days of free updates, renewable at 50% off.
The Oracle Java SE 8 Programmer II (1z0-809日本語版) blueprint covers 11 domains — including Java I/O and NIO.2 (8%), Java Class Design (15%), Advanced Java Class Design (10%). Weightings point you to the heavy hitters; schedule your review accordingly. The complete outline above lists every subtopic.
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The Oracle Java SE 8 Programmer II (1z0-809日本語版) is delivered Online proctored or onsite at Pearson VUE test centers — select whichever suits you when booking.
USD $245 per attempt, with 65% as the passing score. Since a failed attempt bills again, rehearse with the 209 practice questions from TorrentExam until your tracked scores clear the mark consistently.
The Oracle Java SE 8 Programmer II (1z0-809日本語版) is Oracle's official exam for the Oracle Certified Professional, Java SE 8 Programmer credential (Professional level). Before anything else, verify the exam code and name match what you need — then build a plan around the official objectives. Related credentials include Oracle Certified Associate, Java SE 8 Programmer.
Oracle Java SE 8 Programmer II (1z0-809日本語版) Sample Questions:
Given:
設計には次のことが必要です。
-start（）メソッドが呼び出されるとき、EngineのfuelLevelはゼロより大きくなければなりません。
-エンジンのfuelLevelがゼロ以下の場合、コードを終了する必要があります。
この不変条件を表現するには、n1行目にどのコードフラグメントを追加する必要がありますか？
- A. assert fuelLevel < 0: System.exit(0);
- B. assert (fuelLevel) : "Terminating...";
- C. assert fuelLevel > 0: "Impossible fuel" ;
- D. assert (fuelLevel > 0) : System.out.println ("Impossible fuel");
Correct Answer: A 🗳️
Given:
Which two interfaces can you use to create lambda expressions?
- A. U
- B. Q
- C. S
- D. P
- E. T
- F. R
Correct Answer: C,D 🗳️
Empクラスの定義が与えられた場合：
public class Emp
private String eName;
private Integer eAge;
Emp(String eN, Integer eA) {
this.eName = eN;
this.eAge = eA;
}
public Integer getEAge () {return eAge;}
public String getEName () {return eName;}
}
およびコードの断片：
List<Emp>li = Arrays.asList(new Emp("Sam", 20), New Emp("John", 60), New Emp("Jim", 51)); Predicate<Emp> agVal = s -> s.getEAge() <= 60;//line n1 li = li.stream().filter(agVal).collect(Collectors.toList()); Stream<String> names = li.stream()map.(Emp::getEName);//line n2 names.forEach(n -> System.out.print(n + " ")); 結果は何ですか？
- A. 行n1でコンパイルエラーが発生します。
- B. ジョンジム
- C. サムジョンジム
- D. コンパイルエラーが行n2で発生します。
Correct Answer: A 🗳️
Given:
class CheckClass {
public static int checkValue (String s1, String s2) {
return s1 length() ?s2.length();
}
}
and the code fragment:
String[] strArray = new String [] {"Tiger", "Rat", "Cat", "Lion"}
//line n1
for (String s : strArray) {
System.out.print (s + " ");
}
Which code fragment should be inserted at line n1 to enable the code to print Rat Cat Lion Tiger?
- A. Arrays.sort(strArray, CheckClass : : new : : checkValue);
- B. Arrays.sort(strArray, (CheckClass : : new).checkValue);
- C. Arrays.sort(strArray, CheckClass : : checkValue);
- D. Arrays.sort(strArray, (CheckClass : : new) : : checkValue);
Correct Answer: C 🗳️
Given:
and the code fragment:
What is the result?
- A. 1500.0
- B. A compilation error occurs.
- C. 2000.0
- D. 0.0
Correct Answer: A 🗳️
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