PDF Version DemoBooking the 1Z0-819日本語 exam is an investment, and a failed attempt means paying the registration fee all over again. With 297 practice questions from Getcertkey, you walk into the Oracle Java SE 11 Developer (1Z0-819日本語版) exam knowing exactly where you stand.
Oracle 1Z0-819日本語 Exam Overview:
| Certification Vendor: | Oracle |
|---|---|
| Exam Name: | Java SE 11 Developer |
| Exam Number: | 1z0-819 |
| Real Exam Qty: | 80 |
| Related Certifications: | Oracle Certified Professional: Java SE 11 Developer |
| Exam Format: | Multiple Choice, Multiple Select |
| Available Languages: | Portuguese, Chinese, English, Japanese, Spanish |
| Exam Duration: | 90 minutes |
| Passing Score: | 68% |
| Exam Price: | $245 USD |
| Certificate Validity Period: | Lifetime (no expiration, but recertification recommended to stay current) |
| Sample Questions: |  |
| Exam Way: | Pearson VUE testing centers (online proctored exam also available) |
| Pre Condition: | Oracle recommends but does not require candidates to first obtain the Oracle Certified Professional: Java SE 11 Programmer I (1Z0-815) certification. However, 1Z0-819 can be taken directly without 1Z0-815. |
| Official Syllabus URL: | https://education.oracle.com/java/java-se/product_oss_279 |
Oracle 1Z0-819日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Controlling Program Flow | 10% | - Use switch statements - Use for, while, and do/while loops - Use if and if/else statements - Use Java control statements - Use break and continue statements |
| Topic 2: Annotations | 5% | - Apply standard annotations to classes and methods - Create custom annotations - Describe the purpose of annotations |
| Topic 3: Working with Java data types | 12% | - Differentiate between object reference variables and primitive variables - Declare and initialize variables - Call methods on objects - Explain an object's lifecycle (creation, dereferencing via garbage collection) - Create and manipulate strings - Read or write to object fields - Manipulate data using the StringBuilder class and its methods |
| Topic 4: Secure Coding in Java SE Application | 5% | - Prevent Denial of Service (DoS) attacks - Validate user input - Secure sensitive data - Prevent SQL injection and other attacks |
| Topic 5: Working with Java OOP | 15% | - Use abstract classes and interfaces - Implement encapsulation - Apply the final keyword to classes, methods, and fields - Implement inheritance - Implement polymorphism - Apply the static keyword to methods and fields - Create inner classes and use them within other classes |
| Topic 6: Concurrency | 10% | - Use ExecutorService to concurrently execute tasks - Use java.util.concurrent atomic classes and ForkJoinPool - Use parallel streams to improve performance - Use synchronized blocks and the volatile keyword - Identify potential threading problems - Create worker threads using Runnable and Thread objects |
| Topic 7: Working with Streams and Lambda expressions | 13% | - Describe the Stream interface and pipeline - Perform decomposition using the reduce(), collect(), partition(), and groupingBy() methods - Use the Stream API to perform terminal operations - Use functional interfaces with lambda expressions - Use method references with streams - Filter a collection using lambda expressions |
| Topic 8: Java Platform Module System | 10% | - Explain the concept of module exports and requires - Explain the default modules and class path - Deploy and execute modules - Use jdeps to determine dependencies - Declare module dependencies - Migrate applications to use modules |
| Topic 9: Working with Arrays and Collections | 8% | - Create a list, set, map, or queue collection - Iterate through a collection - Sort elements in a collection - Search for elements in a collection - Use generic types and diamond operator - Filter a collection using lambda expressions |
| Topic 10: I/O (Fundamentals and NIO2) | 7% | - Read and write console and file input/output using Java I/O system - Use NIO2 API to work with file systems and file attributes - Use Path interface to manipulate file paths - Use Stream API with files |
| Topic 11: Exception Handling and Localization | 10% | - Use resource bundles and locale classes for internationalization - Create try-catch blocks and understand exception propagation - Use assertions - Use standard exception classes - Create and throw custom exceptions - Describe the advantages of exception handling |
| Topic 12: Database Applications with JDBC | 5% | - Execute queries and process results - Use parameterized queries - Connect to a database using JDBC - Describe the advantages of using a connection pool |
Common Questions About the Oracle 1Z0-819日本語 Exam
What is the Oracle Java SE 11 Developer (1Z0-819日本語版) exam all about?
The 1Z0-819日本語 exam is the official Oracle exam behind the Oracle Java SE certification, validating the skills measured by the Oracle Java SE 11 Developer (1Z0-819日本語版) credential. It sits at the Professional level of the Oracle certification program. It also connects to Oracle Certified Professional: Java SE 11 Developer, so the knowledge you build here carries over to those tracks as well.
How many questions are on the 1Z0-819日本語 exam, and how much time do I get?
The 1Z0-819日本語 exam contains 80 questions to be completed within 90 minutes. Before exam day, divide the available time by the question count to work out a comfortable per-question pace, and mark any item that eats into it so you can return later instead of getting stuck. Timed sessions in the Getcertkey test engines make that pacing automatic — run at least two full-length mock exams under the clock so time pressure never becomes the reason you drop points.
What score do I need to pass the 1Z0-819日本語 exam, and what does it cost?
The passing score for the 1Z0-819日本語 exam is 68%, and the official registration fee is $245 USD. Retakes are not discounted — every new attempt means paying the full fee again — so it pays to measure yourself before you book. Work through the 297 practice questions on Getcertkey, sit a timed practice test, and schedule your exam only when your scores are consistently comfortable. That simple habit is the cheapest exam strategy there is.
Are there any prerequisites for the 1Z0-819日本語 exam?
Oracle recommends but does not require candidates to first obtain the Oracle Certified Professional: Java SE 11 Programmer I (1Z0-815) certification. However, 1Z0-819 can be taken directly without 1Z0-815. Requirements can change when Oracle revises its certification program, so confirm the current eligibility rules on the official exam page before you register.
Can I try the 1Z0-819日本語 practice questions before I buy?
Yes. Getcertkey provides a free 1Z0-819日本語 PDF demo so you can review the question style and answer quality before purchasing. Every purchase also includes 365 days of free updates — if Oracle revises the exam during that period, the updated material reaches you at no cost. Once the free-update year ends, you can extend your update service at a 50% discount.
What if I fail the 1Z0-819日本語 exam, and how is my order delivered?
Every Oracle Java SE 11 Developer (1Z0-819日本語版) purchase on Getcertkey is covered by a 100% money-back guarantee with clear conditions: if you take the corresponding exam within 60 days of your purchase and do not pass, you can claim a full refund by submitting a scanned copy of your exam enrollment slip and your official score report as a PDF within two days of the exam date; claims are processed within seven days of submission. The guarantee does not apply to exams taken within three days of purchase, to material that was downloaded but never used in an exam attempt, or to free products and expired orders, and the candidate name must match the payer name. If you would rather not take a refund, you can instead exchange your purchase for two free exam preparation products of equal value and keep the update service on your original product.
Delivery is instant: your download is sent to your email within one minute of payment, with no limit on how many computers you may install the material on. If nothing arrives within two hours, check your spam folder and contact customer service for help.
What topics are covered in the 1Z0-819日本語 exam?
The Oracle Java SE 11 Developer (1Z0-819日本語版) exam blueprint is organized into 12 domains. The first three are:
- Controlling Program Flow — 10% of the exam
- Annotations — 5% of the exam
- Concurrency — 10% of the exam
For the complete domain-by-domain breakdown, scroll up to the full exam topics outline above and use it to plan how you distribute your study time.
Oracle Java SE 11 Developer (1Z0-819日本語版) Sample Questions:
Question 1
次のコードフラグメントがあるとします:
通貨の値を 100.00 ドルとして表示します。
1 行目に挿入されたどのコードがこれを実現しますか?
A. NumberFormat フォーマッタ = NumberFormat.getInstance(locale).getCurrency();
B. NumberFormat フォーマッタ = NumberFormat.getCurrencyInstance(locale);
C. NumberFormat フォーマッタ = NumberFormat.getInstance(locale);
D. NumberFormat フォーマッタ = NumberFormat.getCurrency(locale);
Question 2
次のコードフラグメントがあるとします:
結果はどうなりましたか？
A. 真 偽 偽
B. 偽 偽 真
C. 偽 真 真
D. 偽 真 偽
Question 3
有効な Java Path インスタンスを作成する 2 つの式はどれですか? (2 つ選択してください。)
A. 新しいパス("foo")
B. Paths.get(URL.create("file:///domains/oracle/test.txt"))
C. Paths.getPath("too")
D. Paths.get("foo")
E. Path.get(新しいURI("file:///domains/oracle/test.txt"))
Question 4
組織では、クラウド顧客にmlib.jarを提供しています。mlib.jarの新機能の開発中に、顧客が参照できるメソッドpublic void enableService(String hostName, String portNumber)が以下のコードフラグメントを実行していることに気付きました。
この権限付与はセキュリティ ポリシー ファイル内にあります。
これにより、クラウド顧客のコードにどのようなセキュリティ上の脆弱性が露呈することになりますか?
A. 顧客のコードベースにもSocketPermissionを付与する必要があるため、なし
B. 任意のmlibサーバーに対するXMLインジェクション攻撃
C. 顧客コードを実行しているOSに対する権限昇格攻撃
D. 指定されたホストとポートに対するSQLインジェクション攻撃
E. 到達可能なマシンに対するサービス拒否攻撃
Question 5
与えられた条件:
結果はどうなりましたか？
A. 5 4 3 2 1
B. 何もない
C. 5 4 3 2 1 4 3 2 1 3 2 1 2 1 1
D. 5
Solutions:
| Question 1 Answer: A | Question 2 Answer: D | Question 3 Answer: B,D | Question 4 Answer: D | Question 5 Answer: B |
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