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Setting environment variables via launchd.conf no longer works in OS X Yosemite/El Capitan/macOS Sie
...ution and it didn't work for me either. But I am specifically expecting my Java IDE (IntelliJ) to pick up my path modifications and it is not. Everything works just fine from terminal. It might be a bug in IntelliJ. Still frustrating that Apple removed this functionality. I called Apple and they wer...
Check whether a string is not null and not empty
...isEmpty())
Be sure to use the parts of && in this order, because java will not proceed to evaluate the second part if the first part of && fails, thus ensuring you will not get a null pointer exception from str.isEmpty() if str is null.
Beware, it's only available since Java SE 1....
Any way to Invoke a private method?
... In my own example (stackoverflow.com/a/15612040/257233) I get a java.lang.StackOverflowError if I do not call setAccessible(true).
– Robert Mark Bram
Mar 25 '13 at 10:11
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Programmatically shut down Spring Boot application
...
@Denys No, the context does not exit the java process on close. The exit in my example just demonstrates how the ExitCodeGenerator can be used. You could just return from the main method to exit gracefully (exit code 0).
– Sotirios Delimanolis
...
Is there a version control system for database structure changes?
...is the choice for Ruby projects. The nearest equivalent to this design in java is mybatis schema migrations. For .NET the equivalent is code.google.com/p/migratordotnet. They're all excellent tools for this job IMO.
– Dan Tanner
May 9 '12 at 12:50
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Moving decimal places over in a double
... If it were possible to store 12.34 cleanly in a double, don't you think Java would have done it? It's not. You'll have to use some other datatype (like BigDecimal). Also, why don't you just divide by 100 instead of doing it in a loop?
– CanSpice
Feb 8 '11 at...
Make copy of an array
...opy loop may be faster because of the setup overheads. If you look at the javadoc for System.arraycopy, you'll see that the method needs to check various things before it starts. Some of these checks are unnecessary with a copy loop, depending on the static array types.
– Ste...
How do you close/hide the Android soft keyboard using Java?
I have an EditText and a Button in my layout.
108 Answers
108
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What is the relationship between Looper, Handler and MessageQueue in Android?
...application, and you can learn more about it in "Concurrent Programming in Java" by Doug Lea(Especially, chapter 4.1.4 "Worker Threads" would be helpful). Also, you can imagine this kind of mechanism is not unique in Android framework, but all GUI frameworks may need somewhat similar to this. You ca...
What is the best way to do GUIs in Clojure?
...will humbly suggest Seesaw.
Here's a REPL-based tutorial that assumes no Java or Swing knowledge.
Seesaw's a lot like what @tomjen suggests. Here's "Hello, World":
(use 'seesaw.core)
(-> (frame :title "Hello"
:content "Hello, Seesaw"
:on-close :exit)
pack!
show!)
and he...