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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, ∼1076🔥, 1💬

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

SSL Client Authentication
This chapter provides tutorial notes and example codes on SSL client authentication. Topics include introduction to SSL client authentication; creating server and client certificates; writing server and client test programs; running SSL client authentication tests. 2016-03-30, ∼1067🔥, 2💬

💬 2016-05-11 Herong: Roman, good point. We need to compile the Java code into a class file first. Thanks.

💬 2016-05-07 Roman: you have small mistake there, it should be: With SslReverseEchoerRevised.class and... instead of: With SslReverseEchoerRevised.j...

HttpsEchoer.java - A Better HTTPS Server
This section provides a tutorial example on how to write a better HTTPS test program, HttpsEchoer.java. It handles connections abandoned by the client correctly. 2022-10-01, ∼1058🔥, 0💬

jdeps - Class Dependency Analyzer Command
This section describes what is 'jdeps' - is a command line tool to run the Java Class Dependency Analyzer tool. 2022-10-01, ∼1000🔥, 0💬

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, ∼972🔥, 1💬

💬 2022-05-10 chaeun: 12

jdeprscan - Deprecated API Scanner Command
This section describes what is 'jdeprscan' - is a command line tool to run the Java Deprecated API Scanner tool. 2022-10-01, ∼961🔥, 0💬

Archived: Downloading and Installing JDK 1.5.0 on Windows
This section provides a tutorial example on how to download and install JDK (or J2SE) 1.5.0 on a Windows XP system. A simple Java program was entered, compiled, and executed with the new JDK installation. 2022-10-01, ∼951🔥, 0💬

Converting java.util.Date to java.time.Instant
This section provides a tutorial example how to migrate Java code from the old java.util.Date class to the new java.time.Instant class. 2022-10-01, ∼950🔥, 0💬

java.time.format.DateTimeFormatter - Date-Time Strings
This section provides a tutorial example on how to use the java.time.format.DateTimeForma tterclass to print date-time objects into strings, or to parse date-time string back as objects. 2022-10-01, ∼933🔥, 0💬

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, ∼912🔥, 1💬

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

CPU Execution Time Shared by Multiple Threads
This section provides a tutorial example on how to measuring CPU execution time allocated to threads with different setPriorities. 2022-10-01, ∼910🔥, 0💬

Using CertificateFactory Class to Read in Certificates
This section provides a tutorial example on how to write a sample program to read in certificate files with the java.security.cert.Certificate Factoryclass. 2022-10-01, ∼864🔥, 0💬

Looking Up Method Signature with javap Command
This section provides a tutorial example of how to lookup method signatures in a class file or JAR file with the 'javap' command. 2022-10-01, ∼856🔥, 0💬

jstack - Stack Tracer to Generate Thread Dump
This section provides a tutorial example on how to use the 'jstack' tool to generate a thread dump (print all running threads and their stack traces). 2017-01-23, ∼840🔥, 1💬

Explicit and Implicit Type Casting
This section describes type casting supported in Java: up casting (widening reference conversion) and down casting (narrowing reference conversion). Cast operation can be written explicitly with the cast operator (T), or implicitly with no operator. 2022-10-01, ∼831🔥, 0💬

rotateLeft() - Left Rotating All Bits in a Byte Array
This section provides a tutorial example on how to perform a left rotation of all bits in a byte array - rotateLeft(). 2022-10-01, ∼806🔥, 0💬

Literal Formats for Floating-Point
This section describes 2 literal formats for floating-point values: decimal and hex floating-point literals. The default floating-point literal data type is 'double'. 2016-02-19, ∼806🔥, 1💬

💬 2016-02-19 Merit Campus: You can clear many of your doubts regarding Literals in Java through Merit Campus, visit: [URL removed]. Not only Literals, we a...

Archived: Downloading and Installing JDK 1.5
This section describes how to download and install Java SE (JDK) 1.5.0 on a Windows XP system. 2022-10-01, ∼797🔥, 0💬

Instance Variables for Enum Constants
This section provides a tutorial on how to define instance variables and methods for enum constants. 2022-10-01, ∼782🔥, 0💬

javap - Java Disassembler Command and Options
This section describes what are the commonly used command line options for the Java bytecode class disassembler - 'javap' tool. 2022-10-01, ∼767🔥, 0💬

jmap - JVM Heap Dump Tool
This section describes the JVM heap dump tool, 'jmap', command and its options. Windows version of 'jmap' can print heap histogram and generate heap dump. 2022-10-01, ∼762🔥, 0💬

Install JDK with "yum" Command
This section provides a tutorial on how to download and install JDK packages using 'yum' command on CentOS systems. It will automatically install dependencies. 2022-10-01, ∼758🔥, 0💬

jrunscript - What Is It
This section describes what is 'jrunscript' - a command line tool that allows you to run script code that in interactive or batch mode. 2022-10-01, ∼758🔥, 0💬

Floating-Point Data Types
This section describes value ranges and storage space sizes of floating-point data types: float and double. 2016-02-15, ∼755🔥, 5💬

💬 2016-02-15 Herong: To Merit Campus, I have to remove links. Advertisement is not allowed in comments

💬 2016-02-15 Merit Campus: You can clear many of your doubts regarding data types in Core Java through Merit Campus, visit: [URL removed]. Not only data ty...

💬 2015-10-31 Herong: Page updated now. Thanks again, Raj.

💬 2015-10-24 Herong: Raj, good catch. It will be corrected later.

💬 2015-10-23 raj: Chief, second point should be "double" but it says "float"

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Android ASP Astrology Big5 Bitcoin Blowfish Built-in C# Calendar CD-DVD Cheminformatics Chinese Cryptography DES Email Encoding Ethereum Flash GB2312 General H Herong History HTML Java JavaScript JDBC JSP JVM Linux Molecule Movie Music MySQL Neural Network Perl PHP Physics PKI Publication Python REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO