Herong's Tutorial Examples: Java

XML Tutorials - Herong's Tutorial Examples
This XML tutorial book is a collection of notes and sample codes written by the author while he was learning XML himself. Topics include introduction to XML, DTD (Document Type Definition), XSD (XML Schema Definition), XPath (XML Path Language), XSL (Extensible Stylesheet Language), XSLT (XSL Transf... 2022-05-06, 10283👍, 3💬

💬 2016-05-07 mehari: this tutorials helps many trainers through out the world, thanks!

💬 2015-07-19 Jay: What about JSON format?

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Creating Class Type Objects
This section describes how class type objects can be created using the 'new' operator and special methods. 2022-06-24, 111👍, 1💬

💬 2022-06-24 waryam: ok

native2ascii - Native-to-ASCII Encoding Converter
This chapter provides tutorial notes on the native-to-ASCII encoding converter 'native2ascii'. Topics include 'native2ascii' command options, default encoding CP1252 used by 'javac', converting UTF-8 characters into \uXXXX Unicode code sequences, converting \uXXXX sequences back to native encodings. 2022-06-09, 5686👍, 64💬

💬 2022-06-09 hupo: (É+ó)+(ó+ó)+'\'

💬 2022-05-29 aaa: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2022-03-13 Q: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2022-01-30 paul: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2021-10-13 dams: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

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SimpleStringBuffer - My Implementation of String Buffer
This section provides a tutorial example on how to implement a simple string buffer class similar to the StringBuffer class included in the java.lang package. 2022-05-20, 137👍, 2💬

EncodingConverter.java - Encoding Conversion Sample Program
This section provides a tutorial example on how to write a sample program, EncodingConverter.java, to convert text files from one character set encoding to another. 2022-05-10, 175👍, 1💬

💬 2022-05-10 chaeun: 12

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. 2022-05-06, 2395👍, 5💬

💬 2021-04-15 omg: nice

💬 2019-07-24 Vivek: yo sup

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. 2022-05-06, 1311👍, 3💬

"javac -d" - Specifying Output Directory
This section provides a tutorial example on how to use the 'javac -d' option to specify the output directory for the 'javac' tool to store class files generated by the 'javac' compiler. 2022-03-22, 2515👍, 3💬

💬 2022-03-22 Hedi: Thanks

💬 2022-01-14 Robert: Thanks

native2ascii - Encoding Converter Command and Options
This section describes the native-to-ASCII encoding converter 'native2ascii' and its options. Non-ASCII characters in a Java source file must be converted into \uXXXX Unicode sequences before giving it to the Java compiler. 2022-03-03, 3257👍, 23💬

💬 2022-03-03 Your Name: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2021-08-19 Ann: \u041f\u043d-\u0421\u0431\

💬 2020-09-17 Sharan: Great place to work

💬 2019-12-18 sdad: Concernant l’entité susmentionnée, veuillez noter que les informations suivantes ont été mises à jour dans nos systèmes

💬 2019-12-18 Axel: Hello

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"javac -classpath" - Specifying Class Path
This section provides a tutorial example on how to use the '-classpath' option to specify the class path for the 'javac' tool to load any classes required during the compilation. 2022-03-03, 193👍, 1💬

SocketClient.java - A Simple Client Socket Application
This section provides a tutorial example on how to write a network application, SocketClient.java, that creates a client socket, connects to a remote socket server, sends and receives text messages. 2022-01-09, 101👍, 0💬

Check JDK Version on CentOS
This section provides a tutorial on how to check the version information of the installed JDK packages on CentOS systems. 2022-01-09, 101👍, 0💬

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. 2021-10-12, 46064👍, 24💬

💬 2021-10-12 Herong: herong_yang@yahoo.com

💬 2021-10-10 Praveen: Hi herong , sorry for late reply, please provide your mail ID

💬 2021-10-07 Herong: Praveen, send your example messages to my Yahoo mailbox. ☺

💬 2021-10-04 Praveen: Example code to parse or decode the multipart inputstream into soap xml part and the attachment part ------=_Part_2737_547225473...

💬 2021-10-04 Praveen: Hi Herong, Is it possible to provide example code?

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Importing Classes Defined in Unnamed Packages
This section provides a tutorial example on how to import classes defined in an unnamed package - done in the same as importing classed defined in named packages with JDK 1.3.1. But it is not allowed with JDK 1.4.1. 2021-08-07, 213👍, 2💬

💬 2021-08-03 Herong: bruce, you need to have Hello.class is in the classpath.

💬 2021-07-31 bruce: D:\javadu>echo %path% C:\Program Files\Java\jdk1.3\bin D:\javadu>javac ImportingHello.java ImportingHello.java:1: cannot resolve...

Archived: 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. 2021-08-04, 3540👍, 4💬

💬 2021-08-04 Bob: can i play hypixel on this

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

Charset.decode() - Method to Decode Byte Sequences
This section provides a tutorial example on how to decode byte sequences back to characters with a given encoding using different decoding methods provided by JDK: CharsetDecoder.decode(), Charset.decode(), new String(), InputStreamReader.read() 2021-07-27, 130👍, 1💬

💬 2021-07-27 aqweqweqwe: %2fWebForms%2fLogin.aspx%3fReturnUrl %3d%252fWebForms%252f...

Object Query Language (OQL)
This section describes what is OQL (Object Query Language). OQL statement syntax and examples are also provided. 2021-07-21, 7567👍, 3💬

💬 2016-09-02 Jach: hello world ,I'm Jack!

Java Tools Tutorials - Herong's Tutorial Examples
This tutorial book based on notes and sample codes collected by the author while he was learning Java tools himself. Topics includes: 'java/javaw' Launcher, 'javac' Compiler, 'javadoc' Document Generator, 'javap' Class File Disassembler, 'jar/jarsigner' Archive Tool, 'jconsole' Console, 'jdb' Debugg... 2021-07-12, 7784👍, 2💬

💬 2021-07-12 Jack Slater: Very useful tutorial

💬 2016-01-12 ASHIS BEHERA: IT IS VERY GOOD

Digital Signature Algorithm and Sample Program
This chapter provides tutorial notes and example codes on digital signature. Topics include algorithm and steps of signing a document; algorithm and steps of verifying a signature; digital signature generation and verification sample programs; sample signatures of SHA1withRSA and SHA1withDSA algorit... 2021-06-09, 1084👍, 4💬

💬 2016-12-15 vijay: thanks

jvisualvm (Java VisualVM) - JVM Visual Tool
This chapter provides tutorial notes on the JVM visual tool, Java VisualVM. Topics include launching Java VisualVM, connecting to local JVM processes; monitoring CPU and heap usage; monitoring thread statuses; taking thread dumps and heap dumps; viewing heap dump and object contents; connecting to r... 2021-01-12, 449👍, 1💬

💬 2021-01-12 vinod: thanks

💬 2017-10-25 haibing: thanks

💬 2017-06-16 marth: powerful tool

💬 2021-01-12 vinod: thanks

💬 2017-10-25 haibing: thanks

💬 2017-06-16 marth: powerful tool

SSL Socket Communication Test
This section describes how to perform a SSL socket communication test with a SSL server socket test program, a SSL client socket test program, a pair of private key and public key, and a self-sign certificate of the public key. 2020-11-14, 106👍, 1💬

Archived: Downloading/Installing JDK 1.7.0 on Windows
This section provides a tutorial example on how to download and install JDK 1.7.0 (Java SE 7) on a Windows XP system. A simple Java program was entered, compiled, and executed with the new JDK installation. 2020-11-01, 2190👍, 4💬

💬 2020-11-01 Sivile: This is good

💬 2019-05-13 Myo Nyein: thanks

💬 2016-03-10 sudha: thanks

💬 2015-09-22 ram: no

What Is an Unnamed Package?
This section describes what is an unnamed package - a package of compilation units with no package name. The main question is how to refer to a compilation unit in an unnamed package. 2020-10-15, 647👍, 2💬

💬 2020-10-12 Herong: Jason, how do we know the unnamed package is yours?

💬 2020-10-09 Jason Patrick: Unnamed package? 67 days in transit? How can I get my package from Canada Post?

JIMAGE - Java Image File Format
This section describes the Java image, JIMAGE, a special file format used to store class and resource files of multiple Java modules to support custom JRE. 2020-06-17, 130👍, 1💬

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