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Timer & TimerTask versus Thread + sleep in Java
...k is that it expresses your intention much better (i.e. code readability), and it already has the cancel() feature implemented.
Note that it can be written in a shorter form as well as your own example:
Timer uploadCheckerTimer = new Timer(true);
uploadCheckerTimer.scheduleAtFixedRate(
new Tim...
How to find out element position in slice?
...lang, that it is designed very well to increase programmer's productivity. And go programs looks as nice as python ones :) So why there is no a common way to do such a common task? I mean, if you want to check if container has an element you can just if element in collection: do_something()
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Convert a bitmap into a byte array
...o convert a Windows Bitmap to a byte[] than saving to a temporary file and reading the result using a FileStream ?
10 ...
Understanding the Event Loop
I am thinking about it and this is what I came up with:
3 Answers
3
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Random record from MongoDB
I am looking to get a random record from a huge (100 million record) mongodb .
26 Answers
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Run a JAR file from the command line and specify classpath
I've compiled a JAR file and specified the Main-Class in the manifest (I used the Eclipse Export function). My dependencies are all in a directory labeled lib . I can't seem to get a straight answer on how to execute my JAR file while specifying it should use the lib/* as the classpath.
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Does the join order matter in SQL?
Disregarding performance, will I get the same result from query A and B below? How about C and D?
4 Answers
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Read/write to Windows registry using Java
...n = " + value);
Here is the original class. Just copy paste it and it should work:
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import java.util.ArrayList;
import java.util.List;
import java.util.pre...
kernel stack and user space stack
What's the difference between kernel stack and user stack? Why kernel stack is used? If a local variable is declared in an ISR, where it will be stored? Does each process has its own kernel stack? Then how the process coordinates between both these stacks?
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Vim Configure Line Number Coloring
... is the way to get help on the 'number' option, instead of the :number command.
To actually change the displayed colour:
:highlight LineNr ctermfg=grey
This would change the foreground colour for LineNr on a character terminal to grey. If you are using gVim, you can:
:highlight LineNr guifg=#05...