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How and where are Annotations used in Java?
...t it is more convenient to use annotations because they will belong to the Java code itself, and are hence much easier to manipulate than XML.
Usage of annotations:
Documentation, e.g. XDoclet
Compilation
IDE
Testing framework, e.g. JUnit
IoC container e.g. as Spring
Serialization, e.g. XML
Asp...
How to format a java.sql Timestamp for displaying?
How do I formate a java.sql Timestamp to my liking ? ( to a string, for display purposes)
7 Answers
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How do I run IDEA IntelliJ on Mac OS X with JDK 7?
...) make sure you have LANG=en_US.UTF-8 in your environment, see the related Java issues:
http://java.net/jira/browse/MACOSX_PORT-165
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7187821
Refer to this thread for debugging launcher issues.
Please also be aware that GUI applications on Mac ha...
How to open the default webbrowser using java
...
java.awt.Desktop is the class you're looking for.
import java.awt.Desktop;
import java.net.URI;
// ...
if (Desktop.isDesktopSupported() && Desktop.getDesktop().isSupported(Desktop.Action.BROWSE)) {
Desktop.getD...
Difference between namespace in C# and package in Java
... the difference (in terms of use) between namespaces in C# and packages in Java?
6 Answers
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What is java interface equivalent in Ruby?
Can we expose interfaces in Ruby like we do in java and enforce the Ruby modules or classes to implement the methods defined by interface.
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How do I create a Java string from the contents of a file?
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Read all text from a file
Java 11 added the readString() method to read small files as a String, preserving line terminators:
String content = Files.readString(path, StandardCharsets.US_ASCII);
For versions between Java 7 and 11, here's a compact, ro...
Why do some claim that Java's implementation of generics is bad?
I've occasionally heard that with generics, Java didn't get it right. (nearest reference, here )
13 Answers
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Error java.lang.OutOfMemoryError: GC overhead limit exceeded
... objects in an already very memory-constrained environment.
Check out the Java GC tuning guide, which is available for various Java versions and contains sections about this specific problem:
Java 11 tuning guide has dedicated sections on excessive GC for different garbage collectors:
for the P...
Java SimpleDateFormat(“yyyy-MM-dd'T'HH:mm:ss'Z'”) gives timezone as IST
...the default timezone of the JVM by setting user.timezone system property: java -Duser.timezone=GMT ...
– kisna
Mar 15 '18 at 19:35
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