-- Exception test declarev_ename EMP. empno % type; -- defines the variable beginselect ename into v_ename from EMP where empno = & gno; dbms_output.put_line ('name: '| v_ename ); exception when no_data_found then dbms_output.put_line ('unfound');
From: http://www.cnbruce.com/blog/showlog.asp? Cat_id = 25 & log_id = 624
Today, we can see on the Bi forum that it is just in line with some things I have been thinking about in recent days.
I calmed down a lot and became more silent. The full
These days, the Internet is sending a paragraph about Chinese programming with C #. After a programmer takes office, he finds that C # is packaged in Chinese, not just a class, there are also keywords in Chinese, and we are worried about whether we
Programmers are a technical work and play an important role in the development of IT, from the establishment of underlying hardware communication protocols, to the processing of the data transmission layer, to the construction of operating systems,
Custom sorting: inherits the FieldComparatorSource class and returns a subclass of the FieldComparator class in the newComparator method of this class.Note: You can refer to the source code of the org. apache. Lucene. search. FieldComparator.
To solve the "dirty data" problem, the simplest method is to use the synchronized keyword to synchronize the run method. The Code is as follows:
Public synchronized void run (){}
From the code above, we can see that as long as the synchronized
Let's look at the database -- (4) transactions and database transactions.
What is a transaction? Simply put, it is what you do or what you do. A term refers to a program execution unit that accesses and may update various data items in the database.
Specific examplesAfter completion of the project structure such as:(Note: The location of the Persistence.xml file determines the root of persistence (persistence root). The root of the persistence is the jar file or the directory containing the
Small press: This is a bugtags user submissions, after a period of intensive use, he has already felt that Bugtags is a good helper app developers, thanks to the app-Chuki students to bugtags Trust and support. The small part is here invites the
Concurrenthashmap is composed of segment array structure and hashentry array structure.Segment is a kind of reentrant lock (Reentrantlock), which plays the role of lock in Concurrenthashmap;The hashentry is used to store key-value pairs of data. A
2016-09-07 22:31:141. The test method must be modified using @test2. The test method must be decorated with public void, with no parameters3. Create a new source code directory to store our test code4. The package for the test class should be
The usual unit test frameworks are named after the first letter of the language they support, and they are collectively referred to as the Xunit framework. C + +, called Cppunit,java, is called JUnit. NET is called NUnit. Of course not all of them
1. OverviewSimply put, we use the PSR-2 compatibility specification, so everything applied to PSR-2 is equally applicable to our code.
The file must use the
The file should have a new line at the end.
PHP code files must only use
In some cases, we conclude that the target method throws an exception and how to handle it. Using JUnit tests to throw exceptions, I summed up 3 ways to see the code:
In the previous article we talked about how to clone a JBehave project from GitHub, both to learn Jbehavaand to familiarize yourself with GitHub.From the clone down of the project, there is no problem, a little bit smooth to run, but the clone down
Description: Learn the notes of getting started of Jmock official websiteExample: publisher (publisher), mock Subscriber (Subscriber) object for test Publish/subscribe Publish/Subscribe Information SystemThe interface Subscriber is as
First, the topicDetermine if the year entered is a leap yearsSecond, the implementation of the programI continue to use javascript+html to achieve:The procedure for judging leap years is as follows, regardless of the input of the exception:function
First, the work that needs to be prepared:1 User protocol (can be a local HTML resource, or a remote URL link address can be called via WebView).2 Signature File (package signature file, can be the signature file of the company before this project).3
In this experiment, our team designed a naming system.Nowadays, the teachers of colleges and universities, in order to check the attendance of students, mainly through the student list to draw points or students to submit homework and sign-in
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