Java Primitives versus Objects (#4946)

* Add code for the article 'Java Primitives versus Objects'

* Use JMH for benchmarking the primitive and wrapper classes

* Uncomment the benchmarks and remove unused class

* Add Long/long to the benchmark

* Remove assertions from the benchmarks

* Add the java docs

out/production/main/com/baeldung/.gitignore

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+*.class
+
+#folders#
+/target
+/neoDb*
+/data
+/src/main/webapp/WEB-INF/classes
+*/META-INF/*
+
+# Packaged files #
+*.jar
+*.war
+*.ear

out/production/main/com/baeldung/README.md

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+### Relevant Articles:
+- [SHA-256 Hashing in Java](http://www.baeldung.com/sha-256-hashing-java)

out/production/main/com/baeldung/enums/README.md

@@ -0,0 +1,2 @@
+### Relevant Articles:
+- [A Guide to Java Enums](http://www.baeldung.com/a-guide-to-java-enums)

out/production/main/com/baeldung/networking/README.md

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+### Relevant Articles:
+- [A Guide To UDP In Java](http://www.baeldung.com/udp-in-java)
+- [A Guide To HTTP Cookies In Java](http://www.baeldung.com/cookies-java)
+- [A Guide to the Java URL](http://www.baeldung.com/java-url)
+- [Working with Network Interfaces in Java](http://www.baeldung.com/java-network-interfaces)

out/production/main/com/baeldung/objectsize/MANIFEST.MF

@@ -0,0 +1 @@
+Premain-class: com.baeldung.objectsize.InstrumentationAgent

out/production/main/com/baeldung/printscreen/README.md

@@ -0,0 +1,2 @@
+### Relevant Articles:
+- [How to Print Screen in Java](http://www.baeldung.com/print-screen-in-java)

out/production/main/javac-args/arguments

@@ -0,0 +1,2 @@
+-d javac-target -verbose
+com/baeldung/javac/Data.java

out/production/main/javac-args/options

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+-d javac-target
+-verbose

out/production/main/javac-args/types

@@ -0,0 +1 @@
+com/baeldung/javac/Data.java

out/production/main/javac-args/xlint-ops

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+-d javac-target
+-Xlint:rawtypes,unchecked,static,cast,serial,fallthrough
+com/baeldung/javac/Data.java

out/production/main/log4j.properties

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+# Set root logger level to DEBUG and its only appender to A1.
+log4j.rootLogger=DEBUG, A1
+
+# A1 is set to be a ConsoleAppender.
+log4j.appender.A1=org.apache.log4j.ConsoleAppender
+
+# A1 uses PatternLayout.
+log4j.appender.A1.layout=org.apache.log4j.PatternLayout
+log4j.appender.A1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

out/production/main1/com/baeldung/datetime/README.md

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+### Relevant Articles:
+- [Introduction to the Java 8 Date/Time API](http://www.baeldung.com/java-8-date-time-intro)

out/test/test/com/baeldung/hexToAscii/README.md

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+### Relevant Articles:
+- [Convert Hex to ASCII in Java](http://www.baeldung.com/java-convert-hex-to-ascii)

out/test/test/com/baeldung/java/conversion/README.md

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+Relevant Articles:
+- [Java String Conversions](http://www.baeldung.com/java-string-conversions)