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Using the “final” modifier whenever applicable in Java [closed]
In Java, there is a practice of declaring every variable (local or class), parameter final if they really are.
25 Answers
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Any shortcut to initialize all array elements to zero?
...t to initialize an one-dimensional array to a different value, you can use java.util.Arrays.fill() (which will of course use a loop internally).
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FixedThreadPool vs CachedThreadPool: the lesser of two evils
...ive consequence to using one for long running threads. The comment in the java doc about CachedThreadPools being suitable for short tasks merely suggest that they are particularly appropriate for such cases, not that they cannot or should not be used for tasks involving long running tasks.
To elab...
What does the `#` operator mean in Scala?
...tion -- and they might even be equal. Class is a runtime representation of Java classes, and it's limited even in Java. For example, List<String> and List<Integer> have the same runtime Class. If Class is not rich enough to represent Java types, it's almost useless when representing Scal...
Handling a Menu Item Click Event - Android
...s"
android:icon="@android:drawable/btn_radio"/>
</menu>
Java code looks like
src/MainActivity.java
@Override
public boolean onCreateOptionsMenu(Menu menu) {
present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
publ...
Are there best practices for (Java) package organization? [closed]
... I saw a question answered here regarding the fine-grained organization of java packages. For example, my.project.util , my.project.factory , my.project.service , etc.
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Convert a RGB Color Value to a Hexadecimal String
In my Java application, I was able to get the Color of a JButton in terms of red, green and blue; I have stored these values in three int s.
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App Inventor 2 扩展 · App Inventor 2 中文网
... Inventor source code (located on Github) and programming the extension in Java. Extension components are packaged as aix files. Once you create an extension component, anyone can use it in their App Inventor projects. Extension component aix files can be housed anywhere on the Web. The aix f...
Why does Java switch on contiguous ints appear to run faster with added cases?
I am working on some Java code which needs to be highly optimized as it will run in hot functions that are invoked at many points in my main program logic. Part of this code involves multiplying double variables by 10 raised to arbitrary non-negative int exponent s. One fast way (edit: but no...
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...