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Usage of forceLayout(), requestLayout() and invalidate()
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I often see requestLayout being called directly after invalidate is called, I even see that happening in Android source code for things like TextView, but according to this diagram doing so is redundant, right? So is there any purpose for doing that?
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Prevent users from submitting a form by hitting Enter
...be some issues with the users hitting enter (I don't know why) and accidentally submitting the survey (form) without clicking the submit button. Is there a way to prevent this?
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How to scroll up or down the page to an anchor using jQuery?
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This can also be made generic to work with all internal anchor links in the page: $("a[href^=#]").click(function(e) { e.preventDefault(); var dest = $(this).attr('href'); console.log(dest); $('html,body').animate({ scrollTop: $(dest).offset().top }, 'slow'); }...
How do I echo and send console output to a file in a bat script?
...ct any stream with prepending the number like 2> err.txt and it is also allowed to redirect multiple streams in one line.
dir 1> files.txt 2> err.txt 3> nothing.txt
In this example the "standard output" will go into files.txt, all errors will be in err.txt and the stream3 will go into...
Spring Boot: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFa
I am totally new to Spring and started to do the official guides from this site:
https://spring.io/guides
27 Answers
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Should I always use a parallel stream when possible?
... easy to iterate over collections as streams, and just as easy to use a parallel stream. Two examples from the docs , the second one using parallelStream:
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byte + byte = int… why?
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The third line of your code snippet:
byte z = x + y;
actually means
byte z = (int) x + (int) y;
So, there is no + operation on bytes, bytes are first cast to integers and the result of addition of two integers is a (32-bit) integer.
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How to hide the title bar for an Activity in XML with existing custom theme
...tlebar for some of my activities. The problem is that I applied a style to all my activities, therefore I can't simply set the theme to @android:style/Theme.NoTitleBar .
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Unable to read data from the transport connection : An existing connection was forcibly closed by th
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This error usually means that the target machine is running, but the service that you're trying to connect to is not available. (Either it stopped, crashed, or is busy with another request.)
In English:
The connection to the machine (rem...
How and where are Annotations used in Java?
...methods. Asking an object for its meta-object (e.g. anObj.getClass() ) is called introspection. The introspection can go further and we can ask a meta-object what are its annotations (e.g. aClass.getAnnotations). Introspection and annotations belong to what is called reflection and meta-programming....