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Java's Virtual Machine and CLR
...s a sort of follow up to the question called Differences between MSIL and Java bytecode? , what is the (major) differences or similarity in how the Java Virtual Machine works versus how the .NET Framework Common Language Runtime (CLR) works?
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Calling Java varargs method with single null argument?
If I have a vararg Java method foo(Object ...arg) and I call foo(null, null) , I have both arg[0] and arg[1] as null s. But if I call foo(null) , arg itself is null. Why is this happening?
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Difference between a Seq and a List in Scala
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In Java terms, Scala's Seq would be Java's List, and Scala's List would be Java's LinkedList.
Note that Seq is a trait, which is equivalent to Java's interface, but with the equivalent of up-and-coming defender methods. Scala's...
What is the difference between SQL, PL-SQL and T-SQL?
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SQL is a query language to operate on sets.
It is more or less standardized, and used by almost all relational database management systems: SQL Server, Oracle, MySQL, PostgreSQL, DB2, Informix, etc.
PL/SQL is a proprietary procedural langu...
How do I instantiate a Queue object in java?
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java.util.Queue is an interface. You can't instantiate interfaces. You need to create an instance of a class implementing that interface. In this case a LinkedList is such a class.
– Mihai Toader
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How do I call some blocking method with a timeout in Java?
Is there a standard nice way to call a blocking method with a timeout in Java? I want to be able to do:
10 Answers
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Why is there no SortedList in Java?
In Java there are the SortedSet and SortedMap interfaces. Both belong to the Java Collections framework and provide a sorted way to access the elements.
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Extract source code from .jar file
Is there a way to extract the source code from an executable .jar file (Java ME)?
10 Answers
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File changed listener in Java
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This is no longer true in Java 7: there's now an API for this that can hook into the OS's notification services: blogs.oracle.com/thejavatutorials/entry/…
– Arnout Engelen
Sep 29 '11 at 10:00
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How to get the user input in Java?
...y of the following options based on the requirements.
Scanner class
import java.util.Scanner;
//...
Scanner scan = new Scanner(System.in);
String s = scan.next();
int i = scan.nextInt();
BufferedReader and InputStreamReader classes
import java.io.BufferedReader;
import java.io.InputStreamReader;
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