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What is the difference between statically typed and dynamically typed languages?
... that you as the programmer must specify what type each variable is (e.g.: Java, C, C++); other languages offer some form of type inference, the capability of the type system to deduce the type of a variable (e.g.: OCaml, Haskell, Scala, Kotlin)
The main advantage here is that all kinds of checking...
Multiple queries executed in java in single statement
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Create a procedure with one or more select, and DML queries.
Call it from java using CallableStatement.
You can capture multiple ResultSets executed in procedure.
DML results can't be captured but can issue another select
to find how the rows are affected in the table.
Sample table and procedu...
How does the static modifier affect this code?
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In Java two phases take place: 1. Identification, 2. Execution
In identification phase all static variables are detected and initialized with default values.
So now the values are:
A obj=null
num1=0
num2=0
The second phase, ex...
How do I join two SQLite tables in my Android application?
...s from memory so there may be some syntactic issues.
http://www.sqlite.org/lang_createview.html
I mention this approach because then you can use SQLiteQueryBuilder with the view as you implied that it was preferred.
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Does the JVM prevent tail call optimizations?
...bproject's status is listed as "proto 80%"; it is unlikely to make it into Java 7, but I think it has a very good chance at Java 8.
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List comprehension rebinds names even after scope of comprehension. Is this right?
...is an insanely old question, but why did some consider it a feature of the language? Is there anything in favour of this kind of variable leaking?
– Mathias Müller
Aug 28 '15 at 11:32
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Java, Classpath, Classloading => Multiple Versions of the same jar/project
... that specific classloader tries to resolve a class name.
According to the java language specification, there is not a uniqueness constraint for a class binary name, but as far as I can see, it should be unique for each classloader.
I can figure out a way to load two classes with the same binary n...
Iterate through a HashMap [duplicate]
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Extracted from the reference How to Iterate Over a Map in Java:
There are several ways of iterating over a Map in Java. Let's go over the most common methods and review their advantages and disadvantages. Since all maps in Java implement the Map interface, the following techniques ...
How to exclude certain directories/files from git grep search
...if you want to search for foobar in every file except for those matching *.java you can do:
git grep foobar -- './*' ':(exclude)*.java'
Or using the ! "short form" for exclude:
git grep foobar -- './*' ':!*.java'
Note that in git versions up to v2.12, when using an exclude pathspec, you must h...
Change case of a file on Windows?
...cifically, I just want to change the case of the file, so that sourceCode.java becomes SourceCode.java , for example. The catch: I'm on a Windows box, and the filesystem thinks those are the same file name.
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