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No empty constructor when create a service
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public ReminderService() {
super("ReminderService");
}
Explanation from the documentation:
The name is used to name the worker thread.
NOTE: this is only applicable to intent service.
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To prevent a memory leak, the JDBC Driver has been forcibly unregistered
...rivers:
// This manually deregisters JDBC driver, which prevents Tomcat 7 from complaining about memory leaks wrto this class
Enumeration<Driver> drivers = DriverManager.getDrivers();
while (drivers.hasMoreElements()) {
Driver driver = drivers.nextElement();
try {
DriverManage...
node.js fs.readdir recursive directory search
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Beware, the "parallel loop" answer from chjj above has a bug in cases when an empty folder is walked. The fix is: var pending = list.length; if(!pending)done(null, results); // add this line! list.forEach(function(file) { ...
– Vasil Dask...
Code for a simple JavaScript countdown timer?
I want to use a simple countdown timer starting at 30 seconds from when the function is run and ending at 0. No milliseconds. How can it be coded?
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@Basic(optional = false) vs @Column(nullable = false) in JPA
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@Xie Jilei: From book: Java persistence with hibernate 2007, p. 179: @Basic(optional = false) @Column(nullable = false) The @Basic annotation marks the property as not optional on the Java object level. The second setting, nullable = f...
Why are local variables not initialized in Java?
... warning is an awesome multi-path bad programmer checker that has saved me from doing stupid stuff since it checks every path and makes sure that if you used the variable in some path then you had to initialize it in every path that lead up to it. I now never explicitly initialize variables until I...
Java switch statement multiple cases
...esponsibility pattern
allows the separation of the source of
a request from deciding which of the
potentially large number of handlers
for the request should action it. The
class representing the chain role
channels the requests from the source
along the list of handlers until a
hand...
How to change a field name in JSON using Jackson
...ation.JsonProperty in Jackson 2.x. Check which ObjectMapper you are using (from which version), and make sure you use the proper annotation.
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Smart way to truncate long strings
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overflow: hidden; /* "overflow" value must be different from visible"*/
-o-text-overflow: ellipsis; /* Opera < 11*/
text-overflow: ellipsis; /* IE, Safari (WebKit), Opera >= 11, FF > 6 */
}
The irony is I got that code snippet from Mozilla MDC.
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Find out if ListView is scrolled to the bottom?
... your calculation stuff here. You have all your
// needed info from the parameters of this function.
// Sample calculation to determine if the last
// item is fully visible.
final int lastItem = firstVisibleItem + visibleItemCount;
if(la...