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Interface naming in Java [closed]
Most OO languages prefix their interface names with a capital I, why does Java not do this? What was the rationale for not following this convention?
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Method has the same erasure as another method in type
...t allowed, drawn from the JLS. Suppose, before generics were introduced to Java, I wrote some code like this:
class CollectionConverter {
List toList(Collection c) {...}
}
You extend my class, like this:
class Overrider extends CollectionConverter{
List toList(Collection c) {...}
}
After t...
Why java classes do not inherit annotations from implemented interfaces?
...implementing class doesn't inherit the annotation as stated in Inherited's java doc:
2 Answers
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Java - escape string to prevent SQL injection
I'm trying to put some anti sql injection in place in java and am finding it very difficult to work with the the "replaceAll" string function. Ultimately I need a function that will convert any existing \ to \\ , any " to \" , any ' to \' , and any \n to \\n so that when the string is e...
How does JavaFX compare to WPF? [closed]
I'm mostly a C# programmer, I stopped writing Java about 10 years ago, but I try to keep up with the technology in Java by reading articles, talking with friends, etc.
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What is the easiest way to get the current day of the week in Android?
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Use the Java Calendar class.
Calendar calendar = Calendar.getInstance();
int day = calendar.get(Calendar.DAY_OF_WEEK);
switch (day) {
case Calendar.SUNDAY:
// Current day is Sunday
break;
case Calendar.MOND...
Why do I need to override the equals and hashCode methods in Java?
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Joshua Bloch says on Effective Java
You must override hashCode() in every class that overrides equals(). Failure to do so will result in a violation of the general contract for Object.hashCode(), which will prevent your class from functioning properly in ...
Add a prefix to all Flask routes
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98
You can put your routes in a blueprint:
bp = Blueprint('burritos', __name__,
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Adding 'serial' to existing column in Postgres
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Mark Amery
98.9k4848 gold badges336336 silver badges379379 bronze badges
answered Feb 28 '12 at 22:09
Euler Tave...
Run a JAR file from the command line and specify classpath
...re)
Specify everything (including your jar) on the commandline using -cp:
java -cp MyJar.jar:lib/* com.somepackage.subpackage.Main
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