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How to read contacts on Android 2.0
...in your projection; then you wouldn't have to do a messy simulated join in Java.
– Yoni Samlan
Dec 17 '10 at 16:28
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What are the differences between a HashMap and a Hashtable in Java?
What are the differences between a HashMap and a Hashtable in Java?
35 Answers
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How to run a background task in a servlet based web application?
I'm using Java and I want to keep a servlet continuously running in my application, but I'm not getting how to do it. My servlet has a method which gives counts of the user from a database on a daily basis as well as the total count of the users from the whole database. So I want to keep the servlet...
Java enum - why use toString instead of name
...ectly changes the toString() return, then it was already broken.
From the javadoc (emphasis mine) :
Returns a string representation of the object. In general, the
toString method returns a string that "textually represents" this
object. The result should be a concise but informative represe...
Why should I use the keyword “final” on a method parameter in Java?
...ny such re-assignments.
In Retrospect
As noted in other answers…
Given Java's original design goal of helping programmers to avoid dumb mistakes such as reading past the end of an array, Java should have been designed to automatically enforce all parameter/argument variables as 'final'. In other...
Dynamic type languages versus static type languages
...tion, dynamic loading, mobile code, runtime reflection" can all be done in Java, just for the record.
– Will Hartung
Sep 24 '08 at 6:11
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Java switch statement multiple cases
Just trying to figure out how to use many multiple cases for a Java switch statement. Here's an example of what I'm trying to do:
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How do I fix a NoSuchMethodError?
I'm getting a NoSuchMethodError error when running my Java program. What's wrong and how do I fix it?
28 Answers
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Who is calling the Java Thread interrupt() method if I'm not?
I've read and re-read Java Concurrency in Practice, I've read several threads here on the subject, I've read the IBM article Dealing with InterruptedException and yet there's something I'm simply not grasping which I think can be broken down into two questions:
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Java SecurityException: signer information does not match
... Can someone explain to newbies how to do that? I started working with java and spring a week ago and i'm lost.
– mghz
Mar 14 '14 at 21:51
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