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The simplest way to comma-delimit a list?
What is the clearest way to comma-delimit a list in Java?
30 Answers
30
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Java: Calling a super method which calls an overridden method
...even achieve the desired effect using Reflection (see the documentation of java.lang.reflect.Method.invoke(Object, Object...)).
[EDIT] There still seems to be some confusion. Let me try a different explanation.
When you invoke foo(), you actually invoke this.foo(). Java simply lets you omit the th...
Spring Boot application as a Service
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What follows is the easiest way to install a Java application as system service in Linux.
Let's assume you are using systemd (which any modern distro nowadays does):
Firstly, create a service file in /etc/systemd/system named e.g. javaservice.service with this content...
Frontend tool to manage H2 database [closed]
... I just fire up the built-in org.h2.tools.Server and browse port 8082:
$ java -cp /opt/h2/bin/h2.jar org.h2.tools.Server -help
Starts the H2 Console (web-) server, TCP, and PG server.
Usage: java org.h2.tools.Server
When running without options, -tcp, -web, -browser and -pg are started.
Options a...
Get a list of resources from classpath directory
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Here is the code
Source: forums.devx.com/showthread.php?t=153784
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.regex.Pattern;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException...
Sending HTTP POST Request In Java
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Sending a POST request is easy in vanilla Java. Starting with a URL, we need t convert it to a URLConnection using url.openConnection();. After that, we need to cast it to a HttpURLConnection, so we can access its setRequestMethod() method to set our method. We final...
Why does int i = 1024 * 1024 * 1024 * 1024 compile without error?
... @iowatiger08: The size of int is fixed; it does not depend on the JVM. Java is not C.
– Martin Schröder
Jul 17 '14 at 11:55
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show 3 mo...
How do I format a number in Java?
How do I format a number in Java?
What are the "Best Practices"?
9 Answers
9
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How to encrypt String in Java
...s I see online when people implement crypto on their own with the standard Java library. If you want to just skip all the details run over to Google's new library Tink import that into your project and use AES-GCM mode for all your encryptions and you shall be secure.
Now if you want to learn the ...
Why java.io.File doesn't have a close() method?
While java.io.RandomAccessFile does have a close() method java.io.File doesn't. Why is that? Is the file closed automatically on finalization or something?
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