The Oracle 1z0-813 exam is an upgrade exam for Java SE 7 certified professionals who aim to achieve Java SE 8 certification. It covers new features and improvements introduced in Java SE 8, including lambda expressions, the Stream API, and new date/time APIs.

The Oracle 1z0-813 exam, also known as the Upgrade to Java SE 8 OCP, is designed for individuals who are already Java SE 7 certified and want to upgrade their certification to Java SE 8. This exam tests the candidate's knowledge and skills in Java SE 8 features and enhancements.

The Oracle 1z0-813 exam consists of approximately 60 multiple-choice questions.

The passing score for the Oracle 1z0-813 exam is 65%.

The Oracle 1z0-813 exam requires a high competency level in Java SE 8 programming, specifically for those who are already certified in Java SE 7 and are looking to upgrade their skills.

The question format of the Oracle 1z0-813 exam includes multiple-choice questions.

The Oracle 1z0-813 exam can be taken at authorized Pearson VUE testing centers or through online proctored exams.

The Oracle 1z0-813 exam is offered in English.

The cost of the Oracle 1z0-813 exam is approximately $245 USD. However, prices may vary based on location and currency.

The target audience for the Oracle 1z0-813 exam includes Java developers, programmers, and professionals who are already certified in Java SE 7 and want to upgrade to Java SE 8.

The average salary of an Oracle 1z0-813 certified professional varies by location and experience but generally ranges from $80,000 to $120,000 annually.

The testing providers for the Oracle 1z0-813 exam are Pearson VUE and Oracle University.

The recommended experience for the Oracle 1z0-813 exam includes hands-on experience with Java SE 8 features and a solid understanding of Java SE 7.

The prerequisites for the Oracle 1z0-813 exam include having an existing Java SE 7 certification.

As of the latest information, there is no announced retirement date for the Oracle 1z0-813 exam. However, candidates should check Oracle's official website for updates.

The Oracle 1z0-813 exam is part of the Java SE 8 certification track. Upon passing, candidates upgrade their Java SE 7 certification to Java SE 8 OCP (Oracle Certified Professional).

The Oracle 1z0-813 exam covers topics such as lambda expressions, the Stream API, new date/time APIs, Java concurrency, and other Java SE 8 features.

Sample questions for the Oracle 1z0-813 exam can be found on Oracle's official certification website or through various online resources and study guides.

The difficulty level of the Oracle 1z0-813 exam is considered to be moderate to high, given that it is an upgrade exam requiring prior certification and experience with Java SE 7 and SE 8.