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What is Persistence Context?
I am new to the Java world and JPA. I was studying JPA and came across many new terms like Entity, persistence. While reading, I could not understand the exact definition for Persistence Context .
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How to delete from multiple tables in MySQL?
...m trying to delete from a few tables at once. I've done a bit of research, and came up with this
7 Answers
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How to prevent the activity from loading twice on pressing the button
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In the button's event listener, disable the button and show another activity.
Button b = (Button) view;
b.setEnabled(false);
Intent i = new Intent(this, AnotherActitivty.class);
startActivity(i);
Override onResume() to re-enable the button.
@Override
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Ruby Bundle Symbol not found: _SSLv2_client_method (LoadError)
I was doing attempting to do some updates to openssl using homebrew and I somehow managed to break everything. I can't do anything now, this is what I get when I try to do bundle install:
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git cherry-pick says “…38c74d is a merge but no -m option was given”
I made some changes in my master branch and want to bring those upstream. when I cherry-pick the following commits however I get stuck on fd9f578 where git says:
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How would you access Object properties from within an object method? [closed]
...y adds code to a setter that needs to run every time that property is set, and the property is being set internally w/o that setter being called).
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How to scale an Image in ImageView to keep the aspect ratio
In Android, I defined an ImageView 's layout_width to be fill_parent (which takes up the full width of the phone).
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How to complete a git clone for a big project on an unstable connection?
...codebase, but at the moment I have an internet connection of about 300kbps and it's just anything but stable. I can get the connection back any moment, but then the git clone process already stopped working, and no way to get it running again. Is there some way to have a more failure-resistant git c...
How can I catch all the exceptions that will be thrown through reading and writing a file?
...ion that may get thrown is an Exception (Uppercase 'E').
If you want to handle your own exceptions first simply add a catch block before the generic Exception one.
try{
}catch(MyOwnException me){
}catch(Exception e){
}
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count vs length vs size in a collection
From using a number of programming languages and libraries I have noticed various terms used for the total number of elements in a collection.
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