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What's the difference between including files with JSP include directive, JSP include action and usi
...se are Java coding elements such as
declarations, expressions, scriptlets, and comments.
Objects and scopes: JSP objects can be created either explicitly or
implicitly and are accessible within a given scope, such as from
anywhere in the JSP page or the session.
Actions: These create objects or affe...
What is the difference between include and require in Ruby?
My question is similar to " What is the difference between include and extend in Ruby? ".
11 Answers
...
Can I set enum start value in Java?
... just labels for integers.
Java enums are implemented more like classes - and they can even have multiple attributes.
public enum Ids {
OPEN(100), CLOSE(200);
private final int id;
Ids(int id) { this.id = id; }
public int getValue() { return id; }
}
The big difference is that th...
How to check if a variable exists in a FreeMarker template?
...:
[#if userName??]
Hi ${userName}, How are you?
[/#if]
Or with the standard freemarker syntax:
<#if userName??>
Hi ${userName}, How are you?
</#if>
To check if the value exists and is not empty:
<#if userName?has_content>
Hi ${userName}, How are you?
</#if>
...
Export and Import all MySQL databases at one time
...re than 100 MySQL databases. I want to export all of them at the same time and again import all of them into my MySQL server at one time. How can I do that?
...
Upload artifacts to Nexus, without Maven
I have a non-Java project that produces a versioned build artifact, and I want to upload this to a Nexus repository. Because the project isn't Java, it doesn't use Maven for builds. And I'd rather not introduce Maven/POM files just to get files into Nexus.
...
How to find if a given key exists in a C++ std::map
I'm trying to check if a given key is in a map and somewhat can't do it:
14 Answers
14...
Insert space before capital letters
I have a string "MySites" . I want to place a space between My and Sites .
8 Answers
...
How to impose maxlength on textArea in HTML using JavaScript
...acter inserted. It's easy to figure out with some debug code on the client and server sides.
– Pointy
Apr 30 '10 at 20:35
7
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When saving, how can you check if a field has changed?
... if you make changes to the object, save it, then makes additional changes and call save() on it AGAIN, it will still work correctly.
– philfreo
Mar 14 '12 at 22:57
17
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