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Adding two Java 8 streams, or an extra element to a stream
...bly of little or no help whatsoever, but I did a forensics analysis of the Java Lambda Mailing list to see if I could find the cause of this design. This is what I found out.
In the beginning there was an instance method for Stream.concat(Stream)
In the mailing list I can clearly see the method wa...
Date format Mapping to JSON Jackson
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Is it just as easy to use Java 8 LocalDateTime or ZonedDateTime instead of Date? Since Date is basically deprecated (or at least many of its methods), I would like to use those alternatives.
– houcros
Nov 24 '16 ...
Normalization in DOM parsing with java - how does it work?
...ackoverflow.com%2fquestions%2f13786607%2fnormalization-in-dom-parsing-with-java-how-does-it-work%23new-answer', 'question_page');
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Java: Detect duplicates in ArrayList?
.../false) whether an ArrayList contains more than one of the same element in Java?
16 Answers
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Is it good practice to make the constructor throw an exception? [duplicate]
... a checked exception for this2.
However explicitly declaring or throwing java.lang.Exception is almost always bad practice.
You should pick an exception class that matches the exceptional condition that has occurred. If you throw Exception it is difficult for the caller to separate this exceptio...
How to change fontFamily of TextView in Android
...════╝
Here is the parser (based off FontListParser):
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import org.x...
How to set a JVM TimeZone Properly
I am trying to run a Java program, but it is taking a default GMT timezone instead of an OS defined timezone. My JDK version is 1.5 and the OS is Windows Server Enterprise (2007)
...
How to get all enum values in Java?
... Value : %s ]%n",currency.name(),currency);
}
}
}
http://javaexplorer03.blogspot.in/2015/10/name-and-values-method-of-enum.html
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how to get the one entry from hashmap without iterating
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If you are using Java 8, it is as simple as findFirst():
Quick example:
Optional<Car> theCarFoundOpt = carMap.values().stream().findFirst();
if(theCarFoundOpt.isPresent()) {
return theCarFoundOpt.get().startEngine();
}
...
Best way to create an empty map in Java
...Granted, no big benefits here compared to Collections.emptyMap(). From the Javadoc:
This map behaves and performs comparably to Collections.emptyMap(),
and is preferable mainly for consistency and maintainability of your
code.
2) Map that you can modify:
Maps.newHashMap()
// or:
Maps.<...