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Strange out of memory issue while loading an image to a Bitmap object
...rs some great information for understanding and dealing with the exception java.lang.OutOfMemoryError: bitmap size exceeds VM budget when loading Bitmaps.
Read Bitmap Dimensions and Type
The BitmapFactory class provides several decoding methods (decodeByteArray(), decodeFile(), decodeResource(),...
Why does the use of 'new' cause memory leaks?
...
In C# and Java, you use new to create an instance of any class and then you do not need to worry about destroying it later.
C++ also has a keyword "new" which creates an object but unlike in Java or C#, it is not the only way to creat...
What are Maven goals and phases and what is their difference?
...s phases.
Plugin is a collection of goals also called MOJO (Maven Old Java Object).
Analogy : Plugin is a class and goals are methods within the class.
Maven is based around the central concept of a Build Life Cycles. Inside each Build Life Cycles there are Build Phases, and inside each B...
SHA512 vs. Blowfish and Bcrypt [closed]
...SHA-256/SHA-512 based crypt implementation.
We ported these algorithms to Java, and you can find a freely licensed version of them at ftp://ftp.arlut.utexas.edu/java_hashes/.
Note that most modern (L)Unices support Drepper's algorithm in their /etc/shadow files.
...
What is the relationship between Looper, Handler and MessageQueue in Android?
...application, and you can learn more about it in "Concurrent Programming in Java" by Doug Lea(Especially, chapter 4.1.4 "Worker Threads" would be helpful). Also, you can imagine this kind of mechanism is not unique in Android framework, but all GUI frameworks may need somewhat similar to this. You ca...
How can I generate UUID in C#
...
I have a GitHub Gist with a Java like UUID implementation in C#:
https://gist.github.com/rickbeerendonk/13655dd24ec574954366
The UUID can be created from the least and most significant bits, just like in Java. It also exposes them. The implementation h...
Should unit tests be written for getter and setters?
...us book 'The Art Of Unit Testing' says:
Properties (getters/setters in Java) are good examples of code that usually doesn’t contain any logic, and doesn’t require testing. But watch out: once you add any check inside the property, you’ll want to make sure that logic is being tested.
...
Explaining Python's '__enter__' and '__exit__'
... that need to be initialized and at some point, tear downed (disposed). In Java 7 and above we have automatic resource management that takes the form of:
//Java code
try (Session session = new Session())
{
// do stuff
}
Note that Session needs to implement AutoClosable or one of its (many) sub-...
Defining custom attrs
...Layout>
parse the class in your view initialization code .../src/main/java/.../MyCustomView.kt
class MyCustomView(
context:Context,
attrs:AttributeSet)
:View(context,attrs)
{
// parse XML attributes
....
private val giveMeAClass:SomeCustomInterface
init
...
Configuring Log4j Loggers Programmatically
...
If someone comes looking for configuring log4j2 programmatically in Java, then this link could help: (https://www.studytonight.com/post/log4j2-programmatic-configuration-in-java-class)
Here is the basic code for configuring a Console Appender:
ConfigurationBuilder<BuiltConfiguration> ...