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Should JAVA_HOME point to JDK or JRE?
... developer, you should point your JAVA_HOME at jdk to access javac copiler etc. It's good if you can test your program to run on the JRE though. If you are using an app server you often also need the JDK instead of the JRE but that depends on the particular server.
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What is the difference between a static and a non-static initialization code block
... the time it is used when doing database connection, API init, Logging and etc.
Don't just bark! where is example?
package com.example.learnjava;
import java.util.ArrayList;
public class Fruit {
static {
System.out.println("Inside Static Initializer.");
// fruits array
...
Overloaded method selection based on the parameter's real type
...ould take several basic Java types such as String, Integer, Boolean, Long, etc. Given an array of Objects, I want to convert them into an array of my Parameter objects by calling the most-specific constructor for each Object in the input array. I also wanted to define the constructor Parameter(Objec...
How to create a loop in bash that is waiting for a webserver to respond?
...hile ! httping -qc1 http://myhost:myport ; do sleep 1 ; done
while/until etc is a personal pref.
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SecurityException: Permission denied (missing INTERNET permission?)
...standard", non-rooted device with stock (or vendor like Samsung, HTC, Sony etc) ROM.
I do not want to crash...
Properly implemented permission management and/org blocking must deal with the fact that most apps may not be ready for the situation where access to certain features is both granted and...
Cross-reference (named anchor) in markdown
...lly generates anchors with several markup tags on all headers (h1, h2, h3, etc.), including:
id="user-content-HEADERTEXT"
class="anchor"
href="#HEADERTEXT"
aria-hidden="true" (this is for an svg link icon that displays on mouseover)
Excluding the aria/svg icon, when one writes:
# Header Title
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AtomicInteger lazySet vs. set
... "lazySet" method to the Atomic classes
(AtomicInteger, AtomicReference, etc). This is a niche
method that is sometimes useful when fine-tuning code using
non-blocking data structures. The semantics are
that the write is guaranteed not to be re-ordered with any
previous write, but may be r...
List Git aliases
...r current user) with --system (for all users). This typically goes in the /etc/gitconfig file.
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UITableView with fixed section headers
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@bachonk i am using a stretchable header view. and my style is UITableViewStyleGrouped. i want to fix the header when scrolling up. if i make it UITableViewStylePlain then the header is getting fixed in the middle of the screen, i want to scroll the ...
Access to Modified Closure (2)
...nt -= foo;
Likewise, if you want a once-only event-handler (such as Load etc):
EventHandler bar = null; // necessary for "definite assignment"
bar = delegate {
// ... code
obj.SomeEvent -= bar;
};
obj.SomeEvent += bar;
This is now self-unsubscribing ;-p
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