Herong's Tutorial Examples: Java

Free Chinese Calendar 2021 - Year of the Ox
Want to know when is the 2021 Chinese New Year day? Look for free Chinese calendars for 2021? Chinese New Year Date for Year 2021 The Ox2021February 12FridayChinese New Year ⇒ Free Chinese Calendar 2022 - Year of the Tiger ⇐ Free Chinese Calendar 2020 - Year of the Rat ⇑ Chinese New Year Dates in... 2021-01-23, 49057👍, 1💬

💬 2021-01-23 Jorge Leach: Well you can find the 2021 lunar date simply by using the Gregorian Lunar Calendar Converter https://www.bbgender.com/gregorian-. ..

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What Is Key Encoding?
This section describes private and public key encoding standards: PKCS#8 is used for encoding private keys and X.509 is used for encoding public keys. 2019-07-24, 916👍, 1💬

💬 2019-07-24 Vivek: yo sup

Downloading and Installing JDK 10
This section describes how to download and install JDK 10 on a Windows system. 2019-06-17, 57079👍, 50💬

💬 2019-06-12 sothea: Java is good

💬 2019-05-13 Myo Nyein: don't know

💬 2019-05-13 Myo Nyein: good

💬 2018-12-23 Thin Ga Ha: Very good

💬 2018-10-22 Chirag: Very good

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"java --list-modules" - Listing Modules in JDK
This section provides a tutorial example on how to use 'java --list-modules' command to list all modules included in the JDK installation. 2019-06-01, 2900👍, 4💬

💬 2019-06-01 Herong: Klaus, it's probably getting them from the C:\Program Files\Java\jdk-10.0.1\lib\modules file. But you can also see a list of mod...

💬 2019-05-24 Klaus: Hi, where does this command get the modules? What is the file they lie in? I'm using CentOS

💬 2019-02-19 Herong: Felix, Thanks for pointing out the typo! It will corrected in the next update.

💬 2019-02-14 felix lee: The line "C:\herong>javac --list-modules" should be "C:\herong>java --list-modules". s/javac/java/

Java GC Tutorials - Herong's Tutorial Examples
This book is a collection of tutorial notes and sample codes written by the author while he was learning JVM GC (Garbage Collection) processes. Topics include Java Garbage Collectors, STW (Stop-The-World), Serial Collector, Parallel Collector, Concurrent Collector, G1 Collector, GC Algorithms, Gener... 2019-01-01, 2430👍, 1💬

💬 2018-06-17 Jack: It's helpful!

Using java.net.HttpURLConnection to Send SOAP Messages
This section describes steps to follow if you want to use the java.net.HttpURLConnection class to send out a SOAP XML message. 2018-12-21, 40680👍, 13💬

💬 2018-12-21 Herong: RAS, Yes. That's a good example on sending a file as a SOAP attachment. I thought you were looking for example on sending files ...

💬 2018-12-18 RAS: Thanks Dr. Herong for your reply. I've gone through the link you've shared but in that way, there's no way to pass other paramet...

💬 2018-12-18 Herong: RAS, Sending (or uploading) files from a client depends what how the server want to receive them. If the server support multipar...

💬 2018-12-17 RAS: Thanks Dr. Herong for the link but I'm not able to convert it to a sample codeset. Can you help me with it?

💬 2018-12-16 Herong: RAS, if you want to send a file with HTTP POST method, check RFC 1867 - Form-based File Upload in HTML.

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Outdated: Downloading and Installing JDK 1.3.1 on Windows
This section provides a tutorial example on how to download and install JDK (or J2SE) 1.3.1 on a Windows 2000 system. A simple Java program was entered, compiled, and executed with the new JDK installation. 2018-11-13, 2183👍, 3💬

💬 2017-08-07 anurag tiwari: i 'm not satisfied with your features

Literal Formats for Integers - Example
This section provides a tutorial example on how to use integer literals in 4 formats: decimal, hex, octal and binary. 2018-10-02, 109👍, 1💬

'jstat -gcutil' - Garbage Collection Statistics
This section provides a tutorial example on how to use the 'jstat -gcutil' command to get garbage collection statistics against a specified JVM process ID. 2018-09-22, 1362👍, 2💬

💬 2018-09-22 Herong: Jagan, "jstat" is for Windows system only. You need to use vmstat or iostat on Oracle Solaris or Linux operating system.

💬 2018-09-22 jagan: cd /usr/java/jdk1.8.0_172/bin/j jar jarsigner java javac java-rmi.cgi jcmd jdeps jjs jps jrunscript jstat is not there.. what we...

Downloading and Installing JDK 1.6.2 on Windows
This section provides a tutorial example on how to download and install JDK 1.6.2 (Java SE 1.6 Update 2) on a Windows XP system. A simple Java program was entered, compiled, and executed with the new JDK installation. 2018-08-11, 9234👍, 15💬

💬 2018-08-11 mikw: thanks

💬 2017-02-27 sireesha: thanks

💬 2017-02-27 sireesha: Hi, I am admire to this site

💬 2017-01-29 hiiii: hi

💬 2016-10-17 Abhishek: Thanks

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java.util.Locale - Localization and Internationalization
This section provides a tutorial example on how to use java.util.Locale class to verify the default locale and list all supported locales. A locale is an identification of a combination of human language and country. 2018-08-01, 6738👍, 4💬

💬 2016-12-25 Herong: jfseb, thanks for pointing out this difference.

💬 2016-12-19 jfseb: Note that java locales do not correspond in all versions to ISO 639. e.g. hebrew is now he, not iw. https://en.wikipedia.org/wik...

💬 2016-05-06 Scrijna: P.S. It's also useful for Java, iOS and Windows localization, as it supports most popular localization formats.

💬 2016-05-06 Scrijna: For Android app localization, you could try using the localization tool https://poeditor.com It's useful for collaborative trans...

Garbage Collection Logging Options
This section describes HotSpot JVM options to generate garbage collection log messages. '-XX:+PrintGCDetails' and '-XX:+PrintGCDateStamps' are two most important options. 2018-06-24, 611👍, 1💬

💬 2018-06-24 Tina: This is useful.

💬 2018-04-23 Don: Thanks for the detailed explanation!

💬 2018-06-24 Tina: This is useful.

💬 2018-04-23 Don: Thanks for the detailed explanation!

Java Exception: "java.lang.OutOfMemoryError: Java heap space"
This section provides a tutorial example on how JVM expands the Heap space to allocate more objects and leads to the 'java.lang.OutOfMemoryError: Java heap space' Java exception, if it is not allowed to expand any more. 2018-06-24, 390👍, 1💬

💬 2018-06-24 Maria: Cool!

💬 2017-08-10 xionghongzhi: awsome artical!!!!!! thx!!!

💬 2018-06-24 Maria: Cool!

💬 2017-08-10 xionghongzhi: awsome artical!!!!!! thx!!!

System.setProperty() - Setting Your Own Properties
This section provides a tutorial example on how to modify system properties provided by the JVM, and set your own properties into the system property map. 2018-05-15, 206👍, 2💬

Using WSDL2Java to Generate Web Service Stub Classes
This chapter provides tutorial notes and example codes on WSDL2Java. Topics include using the WSDL2Java tool included in Axis2 1.4.1; generating client side stub classes; using stub and data type classes; testing stub classes with XML document and RPC method based Web services. 2018-04-22, 13774👍, 9💬

💬 2018-04-22 test name: thanks

💬 2017-01-20 Stephen: Hi , thanks for this tutorial

💬 2016-02-24 Herong: NfeDownloadNFStub, do you need any help on your WSDL document?

💬 2016-02-23 NfeDownloadNFStub: <?xml version="1.0" encoding="UTF-8"?> <wsdl:definitions xmlns:s="http://www.w3.org/2001/XMLS chema"xmlns:soap12="...

💬 2015-12-18 prem: thanks

java.time.Duration - Time Durations
This section describes the java.time.Duration class that represents a duration of time measured in seconds with fractions in nanosecond resolution. 2018-01-03, 623👍, 1💬

💬 2018-01-03 Nikhil Narayanan: Helpful man....but I already knew the stuff....the presentation is simple..nice! JAVA is great, right!

SslReverseEchoer.java - SSL Server Socket Example
This section provides a tutorial example on how to write a sample program to create a SSL server socket to listen for incoming SSL socket connection requests from client machines. 2017-11-27, 1295👍, 1💬

Installing Visual GC Plugin
This section provides a tutorial example on how to install the Visual GC plugin to Java VisualVM and monitor GC activities. 2017-10-25, 2132👍, 4💬

PDF Printing Version: JDK Tutorials
Information on how to obtain the PDF version of this book for printing. 2017-09-29, 1871👍, 5💬

💬 2017-09-29 gloax29: merci

💬 2015-11-20 sameer: good going

💬 2015-09-02 Herong: Dharshan, you can follow tutorials presented at JSSE - Java Implementation of SSL and TLS.

💬 2015-09-01 Dharshan: I want to learn JSSE

'jstat' - JVM Statistics Monitoring Tool
This chapter provides tutorial notes on JVM statistics monitoring tools. Topics include listing JVM processes with 'jps', the JVM remote monitoring server - 'jstatd', Java security policy file, connecting 'jps' and 'jstat' to a remote machine, RMI protocol and URL, getting garbage collection statist... 2017-08-10, 1086👍, 1💬

💬 2017-08-10 abdel: genial very good !!!

💬 2017-04-01 Herong: Asdaq, Thanks for sharing your comment.

💬 2017-03-31 Asdaq: For IBM SDK WebSphere Application Server this tool is not available.

💬 2015-12-13 Herong: Tim, I thought that every Linux system comes with JDK preinstalled. Not true?

💬 2015-12-12 tim: @majumder.soumya@gmail.com seems like you need to install jdk

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'jps' - JVM Process Status Tool
This section describes the JVM process status tool, 'jps' for listing JVM processes on local and remote machines. 2017-08-03, 754👍, 1💬

JSSE - Java Implementation of SSL and TLS
This section describes the JSSE (Java Secure Socket Extension) package, which provides a Java implementation of the SSL and TLS protocols. 2017-07-18, 551👍, 1💬

💬 2017-07-18 Srini: This is not complete

Setting UTF-8 Encoding in PrintStream
This section provides a tutorial example on how to set UTF-8 encoding an output PrintStream to correctly print non-ASCII characters. 2017-06-03, 148👍, 1💬

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