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Why use sprintf function in PHP?
... 'blue';
$item = 'pen';
sprintf('I have a %s %s', $color, $item);
But a language like French orders the words differently:
$color = 'bleu';
$item = 'stylo';
sprintf('J\'ai un %2$s %1$s', $color, $item);
(Yes, my French sucks: I learned German in school!)
In reality, you'd use gettext to stor...
Maximum number of threads per process in Linux?
...x 200000 $ java -Xmx4G -Xss256k -cp . ThreadCreation ... 11542 11543 java.lang.OutOfMemoryError: unable to create new native thread at java.lang.Thread.start0(Native Method) at java.lang.Thread.start(Thread.java:717) at ThreadCreation.main(ThreadCreation.java:15)
– Martin V...
Choose between ExecutorService's submit and ExecutorService's execute
...mo
creating service
a and b=4:0
Exception in thread "pool-1-thread-1" java.lang.ArithmeticException: / by zero
at ExecuteSubmitDemo$1.run(ExecuteSubmitDemo.java:14)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.Thre...
How do I determine whether an array contains a particular value in Java?
...
You can use ArrayUtils.contains from Apache Commons Lang
public static boolean contains(Object[] array, Object objectToFind)
Note that this method returns false if the passed array is null.
There are also methods available for primitive arrays of all kinds.
Example:
Strin...
java.nio.file.Path for a classpath resource
...Java versions named above, e.g. to listing the contents of a package (java.lang in the example) as Paths, like this:
processRessource(Object.class.getResource("Object.class").toURI(), new IOConsumer<Path>() {
public void accept(Path path) throws IOException {
try(DirectoryStream&l...
UnicodeEncodeError: 'ascii' codec can't encode character u'\xa0' in position 20: ordinal not in rang
...(the interface shouldn't change if you decide to reimplement it in another language for whatever reason) and therefore you should not expect that user even aware about python-specific envvars. It is bad UI to force user to specify character encoding; embed the character encoding in the report format...
How to create an array of 20 random bytes?
...
If you are already using Apache Commons Lang, the RandomUtils makes this a one-liner:
byte[] randomBytes = RandomUtils.nextBytes(20);
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Populating Spring @Value during Unit Test
...ld to set private fields.
@see JavaDoc: ReflectionTestUtils.setField(java.lang.Object, java.lang.String, java.lang.Object)
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Most concise way to convert a Set to a List
... after this when I tried to access list element it giving me error, " java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String" ..don;t know why..it's simple list.get(int) that's it ...any suggestion ?
– CoDe
Jun 20 '14 at 17:45
...
How to load JAR files dynamically at Runtime?
...ckage tools;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
/**
* Useful class for dynamically changing the classpath, ...