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Java Enum definition
I thought I understood Java generics pretty well, but then I came across the following in java.lang.Enum:
7 Answers
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Java Replacing multiple different substring in a string at once (or in the most efficient way)
... or you are operating on many strings, then it could be worthwhile using a java.util.regex.Matcher (this requires time up-front to compile, so it won't be efficient if your input is very small or your search pattern changes frequently).
Below is a full example, based on a list of tokens taken from ...
Is it possible to read from a InputStream with a timeout?
...ite - it always returns the best value for the number of bytes available. Javadoc for InputStream.available():
Returns an estimate of the number of bytes that can be read (or skipped over)
from this input stream without blocking by the next invocation of a method for
this input stream.
An esti...
How to lazy load images in ListView in Android
...anguage governing permissions and limitations
under the License.
*/
import java.io.IOException;
public class DrawableManager {
private final Map<String, Drawable> drawableMap;
public DrawableManager() {
drawableMap = new HashMap<String, Drawable>();
}
public Dr...
Difference between DTO, VO, POJO, JavaBeans?
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JavaBeans
A JavaBean is a class that follows the JavaBeans conventions as defined by Sun. Wikipedia has a pretty good summary of what JavaBeans are:
JavaBeans are reusable software components for Java that can be manipul...
Who architected / designed C++'s IOStreams, and would it still be considered well-designed by today'
...-related state bits, and no problem.
Note that in "modern" languages like Java, C#, and Python, all objects have a toString/ToString/__str__ function that is called by the I/O routines. AFAIK, only C++ does it the other way around by using stringstream as the standard way of converting to a string...
Hadoop “Unable to load native-hadoop library for your platform” warning
... native to your HADOOP_OPTS like this:
export HADOOP_OPTS="$HADOOP_OPTS -Djava.library.path=$HADOOP_HOME/lib/native"
PS: Thank Searene
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Checking that a List is not empty in Hamcrest
...rtEquals(new ArrayList<>(0), Arrays.asList("foo", "bar");
you get
java.lang.AssertionError
Expected :[]
Actual :[foo, bar]
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How to optimize for-comprehensions and loops in Scala?
So Scala is supposed to be as fast as Java. I'm revisiting some Project Euler problems in Scala that I originally tackled in Java. Specifically Problem 5: "What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?"
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How to capitalize the first character of each word in a string
Is there a function built into Java that capitalizes the first character of each word in a String, and does not affect the others?
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