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Creating a custom JButton in Java
...mplement AbstractButton and conform to the guidelines set out by the Swing API. A good starting point is to look at the javax.swing.LookAndFeel and javax.swing.UIManager classes.
http://docs.oracle.com/javase/8/docs/api/javax/swing/LookAndFeel.html
http://docs.oracle.com/javase/8/docs/api/javax/sw...
Print number of keys in Redis
...s_mode:standalone
os:Linux 5.4.0-1017-aws x86_64
arch_bits:64
multiplexing_api:epoll
atomicvar_api:atomic-builtin
gcc_version:9.3.0
process_id:2854672
run_id:90a5246f10e0aeb6b02cc2765b485d841ffc924e
tcp_port:6379
uptime_in_seconds:2593097
uptime_in_days:30
hz:10
configured_hz:10
lru_clock:4030200
ex...
Graph visualization library in JavaScript
...orkx example in IPython here, human interaction example here, and JS Embed API.
sigma.js Lightweight but powerful library for drawing graphs
jsPlumb jQuery plug-in for creating interactive connected graphs
Springy - a force-directed graph layout algorithm
Processing.js Javascript port of the Process...
When use getOne and findOne methods Spring Data JPA
...
TL;DR
T findOne(ID id) (name in the old API) / Optional<T> findById(ID id) (name in the new API) relies on EntityManager.find() that performs an entity eager loading.
T getOne(ID id) relies on EntityManager.getReference() that performs an entity lazy loading...
How to find an available port?
... case: In my case I needed to find a free port number to hand it into some API (say an embedded Jetty starter, for tests) - the respective API wants a socket number - not an already opened server socket. So it depends.
– vorburger
Sep 14 '12 at 11:44
...
What exactly is a Context in Java? [duplicate]
...ate of other classes, state of the current environment, etcetera.
In some API's you see this name back in an interface/class, e.g. Servlet's ServletContext, JSF's FacesContext, Spring's ApplicationContext, Android's Context, JNDI's InitialContext, etc. They all often follow the Facade Pattern which...
When to use window.opener / window.parent / window.top
...be found here:
window.opener
https://developer.mozilla.org/en-US/docs/Web/API/Window.opener
I've used window.opener mostly when opening a new window that acted as a dialog which required user input, and needed to pass information back to the main window. However this is restricted by origin polic...
Height of status bar in Android [duplicate]
... the 25px value is not correct for all mdpi devices. It can vary based on API level. For example, the 10.1 WXGA tablet emulator device reports 25px at API 16 & 19, but 24px at API 24.
– jk7
Jul 26 '17 at 20:33
...
How to trigger an event after using event.preventDefault()
...Instead of digging through the back-end form post code, you could write an API and then update your front-end code to hit that API first before allowing the form to do it's traditional POST.
To do that, you can implement code similar to what I've written here:
$('#signup_form').on('submit', funct...
Server polling with AngularJS
... The process for stopping a $timeout is explained here docs.angularjs.org/api/ng.$timeout. Basically, the $timeout function returns a promise which you need to assign to a variable. Then listen for when that controller gets destroyed: $scope.$on('destroy', fn());. In the callback function cal...