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Data access object (DAO) in Java
...diagram here:
http://www.oracle.com/technetwork/java/dataaccessobject-138824.html
Maybe a simple example can help you understand the concept:
Let's say we have an entity to represent an employee:
public class Employee {
private int id;
private String name;
public int getId() {
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How can I read a text file without locking it?
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121
You need to make sure that both the service and the reader open the log file non-exclusively. T...
How to make PowerShell tab completion work like Bash
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svicksvick
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Matplotlib Legends not working
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You should add commas:
plot1, = plt.plot(a,b)
plot2, = plt.plot(a,c)
The reason you need the commas is because plt.plot() returns a tuple of line objects, no matter how many are actually created from the command. Without the comma, "plot1" and "plot2" are tuples instead of...
NodeJS - What does “socket hang up” actually mean?
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24 Answers
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Active
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Best practice multi language website
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+250
Topic's premise
There are three distinct aspects in a multilingual site:
interface translation
content
url routing
While they all ...
Replace a value if null or undefined in JavaScript
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275
Here’s the JavaScript equivalent:
var i = null;
var j = i || 10; //j is now 10
Note that ...
How can I hash a password in Java?
...uilt in to the Java runtime to do this. The SunJCE in Java 6 supports PBKDF2, which is a good algorithm to use for password hashing.
byte[] salt = new byte[16];
random.nextBytes(salt);
KeySpec spec = new PBEKeySpec("password".toCharArray(), salt, 65536, 128);
SecretKeyFactory f = SecretKeyFactory.g...
How to Copy Text to Clip Board in Android?
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627
use ClipboardManager
ClipboardManager clipboard = (ClipboardManager) getSystemService(Context...
Get event listeners attached to node using addEventListener
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adriaan
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answered Mar 27 '13 at 18:13
NVINVI
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