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Certifications/Oracle/Oracle 1Z0-809
Oracle专业级📚 其他

Java SE 8 Programmer II (1Z0-809)

Oracle Java SE 8 Programmer II exam prep covering generics, collections, lambda expressions, streams, concurrency, I/O, JDBC, localization, and advanced language features. Includes 176 practice questions with explanations, a 150-minute exam format, and a 65% passing score.

Start PracticeBrowse Learning Path
85
Questions per exam
176
Question bank total
150m
Exam Duration
65/100
Passing Score
$245
Exam Fee

At a glance

176 questions
Best forJava developers who already know the basics and want the next certification step, IT professionals preparing for the Oracle Java SE 8 Programmer II exam
Prep pace5-7 weeks with experience
Course pack7 chapters · 60 hours
Learner signal0 enrolled · 0/5
Exam Guide
?
Bottom line · It depends

Java SE 8 OCP II 是 Java 开发岗位最硬核的语言认证，但 SE 8 版本已过时，新考生建议直接考 1Z0-830（SE 21）。

What this certification covers

This page is structured for quick scanning first: exam format, fit, prep time, and the actual study scope.

Java SE 8 Programmer II（1Z0-809）是 Oracle Certified Professional（OCP）认证的第二阶段考试，要求先通过 1Z0-808（OCA）。85 题 150 分钟，65% 通过，考试费 $245。这不是"写 Hello World"级别的考试 — 它考的是 Lambda 表达式、Stream API、并发包（java.util.concurrent）、NIO.2 文件操作这些 Java 8 引入的核心特性。

考试难度集中在两个方面：一是 泛型和集合框架的边界条件（wildcard ? extends/super 的区别、类型擦除的行为），二是 多线程并发的正确性（CyclicBarrier vs CountDownLatch、Fork/Join 框架、线程池的选择）。很多 3-5 年经验的 Java 开发者第一次模考也只拿 50-60%。

Oracle 在 2025 年推出了 Java SE 21 版本的 OCP（1Z0-830），SE 8 版本虽然还能考，但市场认可度已开始下降。如果你纯粹为了职业发展，建议直接考 SE 21 版本。但如果你的项目还在用 Java 8（大量金融系统仍是 Java 8），1Z0-809 的知识点直接对口。

You will work with

Oracle 技术数据库管理系统架构性能优化故障排除

After preparation

  • Prepare for the Oracle 1Z0-809 exam with a realistic study path
  • Use advanced Java language features with more confidence
  • Build the Java depth needed for higher-level development roles
  • Strengthen your position for the Oracle Java certification track

Exam details

Exam Code
1Z0-809
Provider
Oracle
Duration
150 minutes
Question Count
85 questions
Passing Score
65/100
Validity
0 years
Exam Fee
$245 USD
Question Types
Single choice, Multiple select
Languages
English, 日本語
Official Page
Open AWS page

Who should take it

Good fit

  • Java developers who already know the basics and want the next certification step
  • IT professionals preparing for the Oracle Java SE 8 Programmer II exam
  • Developers who want stronger skills in streams, concurrency, and the Java API
  • Anyone moving from Java fundamentals into more advanced Java development

Before you start

  • You should already be comfortable with Java SE 8 basics
  • Hands-on coding practice with classes, exceptions, and collections is recommended
  • The course assumes you are ready for more advanced Java topics

Is it worth it? Career value

Salary ranges, target job titles, and the real career impact of holding Oracle 1Z0-809.

澳洲
$95K-140KAUD
美国
$110K-170KUSD
中国
¥250K-500KCNY
Java DeveloperBackend EngineerJava 高级开发工程师后端架构师

OCP 在 Java 岗位招聘中的实际作用

Oracle OCP 认证在金融、保险、电信这类 Java 重度使用行业的简历筛选里有明确加分。澳洲四大银行（CBA、NAB、ANZ、Westpac）的 Java 岗位 JD 里，约 30% 提到 "Oracle Certified" 或 "OCP preferred"。

但 OCP 不是万能的：前端转 Java 的人不建议考这个 — 它不教你 Spring Boot、微服务、Docker 这些实际工作中用得最多的东西。OCP 考的是语言层面的细节（泛型、并发、IO），对已经在写 Java 的人是锦上添花，对新人来说性价比不如直接学 Spring 生态。

适合考的人：已经有 1-2 年 Java 开发经验，想在简历上加一个"语言能力背书"的工程师。不适合：完全没写过 Java 的转行者。

Study preparation

With hands-on AWS

5-7 weeks

From scratch

10-14 weeks

Daily pace

1.5-2 hours/day

Learning path preview

7 chapters
1
1Z0-809 Exam Overview and Study Plan
30 min
2
Generics and Collections
60 min
3
Lambda Expressions and Functional Programming
70 min
4
Stream API and Pipeline Operations
80 min
5
Concurrency and Thread Management
90 min
6
I/O, JDBC, and Localization
100 min
+ 1 more chapters inside the full path

Step-by-step preparation

A concrete week-by-week plan from past test-takers — not generic advice.

1

第一阶段：Java 8 新特性突击（2 周）

集中攻克 Lambda、Stream API、Optional、Date/Time API（java.time）。每个特性写 10+ 个小程序练手，重点理解 Stream 的 lazy evaluation 和 terminal operation 的区别。

2

第二阶段：并发和泛型深度学习（2-3 周）

这是 1Z0-809 的"地狱区域"。把 java.util.concurrent 包里的 ExecutorService、Future、CyclicBarrier、CountDownLatch、ReentrantLock 全部写 demo 跑一遍。泛型部分重点搞清楚 PECS 原则（Producer Extends, Consumer Super）。

3

第三阶段：按章节刷题 + 查漏补缺（2-3 周）

每天 30-40 题，做完对答案。错题整理到 Notion，按知识点分类。NIO.2 文件操作、JDBC 基础、异常处理的链式调用这些容易忽略的小章节也要覆盖到。

Real test-taker experiences

What it actually took for real candidates to pass — prep time, scores, and lessons learned.

并发那部分比我预期难很多，Fork/Join 框架实际工作中几乎没用过但考试考得很细。建议把 Enthuware 的模考做 3 遍以上，题库质量比 Whizlabs 好。

Z. Chen78/100
Java 后端 4 年 · 6 weeks prep

险过。最大的教训是不能只看书不写代码，Stream API 的 flatMap 和 reduce 这些东西必须自己写才能理解。光背 API 签名没用，考试给你一段代码问输出结果。

应届 CS 毕业生69/100
刚入职 Java 岗 · 12 weeks prep

Certification comparison

Oracle 1Z0-809Oracle 1Z0-808Oracle 1Z0-829
ProviderOracleOracleOracle
Level专业级助理级专业级
Fee$245$245$245
Duration150 min150 min90 min
Questions per exam857750
Validity0 yrs0 yrs0 yrs

Study tips and common mistakes

💡

**Enthuware 模考是必备** — $12 买一套，题目风格和真题最接近，比 Whizlabs 和 Udemy 的都靠谱。

💡

**150 分钟 85 题，平均 1.76 分钟/题** — 遇到长代码题先看选项再看代码，排除法效率更高。

💡

**多选题策略** — 如果不确定选几个，默认选 2-3 个最有把握的，不要贪多。

💡

**代码输出题先找编译错误** — 如果代码有编译问题，直接选"Compilation fails"，不用分析运行逻辑。

💡

**考前一周只做全真模考** — 不要再学新知识，把错题过一遍，保持手感。

⚠️

**忽略编译错误选项** — 约 15% 的题目正确答案是"编译错误"，要仔细看泛型边界和方法签名是否匹配。

⚠️

**Stream API 的 lazy evaluation 搞不清** — filter().map() 不会立刻执行，只有遇到 terminal operation（collect/forEach/reduce）才触发。

⚠️

**并发题只背 API 不理解语义** — CyclicBarrier 可重用、CountDownLatch 一次性，这种区别必须理解到位。

⚠️

**日期时间 API 用错类** — LocalDate 没有时间、LocalDateTime 没有时区、ZonedDateTime 才有时区，考试经常混着考。

⚠️

**多选题漏选** — 1Z0-809 多选题不告诉你选几个，漏选一个整题零分。

Frequently Asked Questions

If you plan to take Oracle 1Z0-809, start with real practice.

176 questions, chapter-by-chapter learning, mock exams, wrong-question review, and AI tutor support live in the exam page.

Go to exam prep

From $39 · 2 free chapters

Student reviews

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EXAM PREP

Oracle 1Z0-809 Question Bank

Chapter-by-chapter learning + mock exams + AI tutor

176
Questions
7
Chapters
60h
Study
AI
Tutor
  • First 2 chapters free
  • Real exam format mock tests
  • AI-powered wrong answer review
  • Chapter progress tracking
From $39
Start Practice Now

Prep snapshot

Study chapters7
Practice questions176
Estimated hours60h

What is inside

  • 176 practice questions covering the advanced Java SE 8 topics
  • Strong coverage of generics, collections, lambda expressions, streams, and concurrency
  • Mock exam aligned to the official 85-question, 150-minute format
  • Clear explanations that focus on language behaviour and exam traps
  • Study flow built for candidates already past the Java basics stage