Download Oracle.1z0-900.Test4Prep.2019-05-30.43q.tqb
| Vendor: | Oracle |
| Exam Code: | 1z0-900 |
| Exam Name: | Java EE 7 Application Developer |
| Date: | May 30, 2019 |
| File Size: | 1 MB |
Demo Questions
Question 1
You need to develop a chat application, which allows the display of emoticons and images together with text messages.
How should you configure a WebSocket endpoints to receive both text and binary messages?
- Create two @onMessage methods in the same endpoint with appropriate parameter types.
- Define the @onMessage methods in your endpoint with Object as parameter and check the actual type in your code.
- You can achieve this only by creating separate WebSocket endpoints for each message type.
- Create two @onMessage methods, each with appropriate decoder attribute in the same endpoint.
Correct answer: D
Explanation:
Reference: https://abhirockzz.gitbooks.io/java-websocket-api-handbook/content/Receiving%20Messages.html Reference: https://abhirockzz.gitbooks.io/java-websocket-api-handbook/content/Receiving%20Messages.html
Question 2
Which interface should you implement if you want to be alerted to the lifecycle events surrounding your task being executed by a ManagedExecutorService?
- the Runnable Interface
- the ManagedExecutorTask interface
- the TaskEventListener interface
- the ManagedTaskListener interface
Correct answer: D
Explanation:
Reference: https://github.com/javaee/concurrency-ee-spec/blob/master/api/src/main/java/javax/enterprise/concurrent/ManagedExecutorService.java Reference: https://github.com/javaee/concurrency-ee-spec/blob/master/api/src/main/java/javax/enterprise/concurrent/ManagedExecutorService.java
Question 3
Given the code fragment:
Which URL triggers the invocation of the getEmployee () method?
- <base url>/Employees/89724
- <base url>/Employees/J6349
- <base url>/Employees/id:a7280
- <base url>/Employees/id/J6349
Correct answer: B
