Alibabacloud.com offers a wide variety of articles about oracle certified associate java se 8 programmer, easily find your oracle certified associate java se 8 programmer information here online.
DriverManager class including the JDBC URL
Submit queries and read results from the database including creating statements, returning result sets, iterating through The results, and properly closing result sets, statements, and connections
Localization
Describe the advantages of localizing an application
Read and set the locale by using the locale object
Create and read a Properties file
Build A resource bundle for each locale and load a resource bundle in an appli
Use super and this to access objects and constructors
Use abstract classes and interfaces
Handling Exceptions
Differentiate among checked exceptions, unchecked exceptions, and Errors
Create a try-catch block and determine how to exceptions alter normal program flow
Describe the advantages of Exception handling
Create and invoke a method that throws an exception
"Recognize common exception classes (such as NullPointerException, Arithmeticexcpetion, arrayinde
, and a=4 is called in the heap if there is no a=10 in the stack.29. When an object makes only one call to a method, it can be simplified to an anonymous object30. Encapsulation: Encapsulation the properties and implementation details of hidden objects, providing public access only to the outside. Proprietary private things can only work in this class. To logically contract a given data in a method (the role of encapsulation)31. Constructor: The function that is called when building an object: T
an abstract class and an interface?(1) Abstract classes need to be inherited, and can only be inherited. Interface needs to be implemented, and can be implemented more, that is, to implement multiple interfaces(2) Abstract classes can be defined abstract methods and non-abstract methods, subclass inheritance can directly invoke non-abstract methods, the interface can only define abstract methods (that is, all of the interfaces are not implemented methods), subclasses must implement their method
This short tutorial will demonstrate how to install the latest Java JDK 8 released by Oracle in Ubuntu. The method used here is to teach you how to download the installation package from the download page, and then install the package in Ubuntu without using external PPA or third-party source code.
This method does not depend on a third-party source warehouse. Yo
Oracle Data installation package download
https://www.oracle.com/downloads/
Java 8 installation package download
Https://launchpad.net/~webupd8team/+archive/ubuntu/java
Check if Java has been installed
$ java-versionJava Vers
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.