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I want to get the type of a variable at runtime
...h the class reference that all objects have.
val name = "sam";
name: java.lang.String = sam
name.getClass
res0: java.lang.Class[_] = class java.lang.String
If you however mean the type that the variable was declared as, then you cannot get that. Eg, if you say
val name: Object = "sam"
then yo...
Synthetic Class in Java
...
The javadoc for java.lang.reflect.Member#isSynthetic says : Returns true if this member was introduced by the compiler; returns false otherwise.
– Guillaume Husta
Feb 17 '17 at 9:58
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What's the simplest way to print a Java array?
..."}};
System.out.println(Arrays.toString(deepArray));
//output: [[Ljava.lang.String;@106d69c, [Ljava.lang.String;@52e922]
System.out.println(Arrays.deepToString(deepArray));
Output:
[[John, Mary], [Alice, Bob]]
double Array:
double[] doubleArray = { 7.0, 9.0, 5.0, 1.0, 3.0 };
Syste...
How to catch an Exception from a thread
...Main stopped");
prints
** Started
** RuntimeException from thread
java.lang.IllegalStateException: exception from thread
at Main$1.call(Main.java:11)
at Main$1.call(Main.java:6)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTa...
Relationship between hashCode and equals method in Java [duplicate]
... this implementation
technique is not required by the JavaTM programming language.)
However some time you want the hash code to be the same for different object that have the same meaning. For example
Student s1 = new Student("John", 18);
Student s2 = new Student("John", 18);
s1.hashCode() != s...
Typing Enter/Return key using Python and Selenium?
...ent.sendKeys(Keys.RETURN);
the import statement is for Java, for other languages it is maybe a different, for example python: from selenium.webdriver.common.keys import Keys
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Any reason why scala does not explicitly support dependent types?
...ypes and I think it is possible to express almost all the features of such languages as Epigram or Agda in Scala, but I'm wondering why Scala does not support this more explicitly like it does very nicely in other areas (say, DSLs) ?
Anything I'm missing like "it is not necessary" ?
...
Java SecurityException: signer information does not match
...shing jars is:
mvn dependency:tree
For example, for an exception:
java.lang.SecurityException: class "javax.servlet.HttpConstraintElement"'s signer information does not match signer information of other classes in the same package
we do:
mvn dependency:tree|grep servlet
Its output:
[INFO] ...
How do I use regex in a SQLite query?
...the REGEXP operator:
WHERE x REGEXP <regex>
http://www.sqlite.org/lang_expr.html#regexp
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How to make HTML Text unselectable [duplicate]
...l, then consider this JavaScript fallback:
<!doctype html>
<html lang="en">
<head>
<title>SO question 2310734</title>
<script>
window.onload = function() {
var labels = document.getElementsByTagName('label');
...