Popular Books:
'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, ∼2788🔥, 2💬
💬 2017-11-22 Sandeep: Can this also read post request from cleint
💬 2016-06-10 Herong: Algérian, did you find what you were looking for here?
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, ∼1062🔥, 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, ∼3156🔥, 4💬
Full Version in PDF/EPUB
Information on how to obtain the full version of this book in PDF, EPUB, or other format. 2017-09-29, ∼2632🔥, 5💬
💬 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
'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, ∼1161🔥, 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, ∼905🔥, 1💬
Using SO_LINGER Socket Option
A tutorial example is provided to show how to use the SO_LINGER socket option to prevent the server closing the socket too soon after writing the response to the socket. 2017-02-16, ∼1812🔥, 2💬
💬 2017-02-15 Gaurav Kumar: Where can i get this file herong.jks?
"jar -C" - Changing Input Directory
This section provides a tutorial example on how to 'jar --create -C ...' to change input directory when creating JAR files. 2017-02-04, ∼1495🔥, 3💬
💬 2017-02-04 Herong: Chris, Thanks for sharing the information.
💬 2017-02-03 Chris: For unix, on the last command, ".;" changes to ".:".
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, ∼813🔥, 1💬
Operations on "byte" Data Type Values
This section provides a tutorial example on how 'byte' values are casted to 'int' values when they are involved in arithmetic, comparison and bitwise operations. 2017-01-21, ∼6369🔥, 2💬
💬 2017-01-19 Anonymous: Reason for why byte doesn't holds good the + operator directly.
BankingThread.java - Synchronization Sample Program
This section provides a tutorial example on how to solve the banking synchronization issue with Java synchronized methods. 2017-01-21, ≈10🔥, 5💬
💬 2017-01-18 Abhishek: This is too complex for a beginner. Please write a simpler one.
💬 2016-09-17 Herong: dot.g, really? please give details.
Full Version in PDF/EPUB
Information on how to obtain the PDF version of this book for printing. 2016-12-28, ∼3402🔥, 5💬
💬 2016-12-28 liab: wrote a meaningful comment
💬 2016-08-23 ericens: it meaning a lot to me
Printing Histogram of Java Object Heap
This section provides a tutorial example on how to print the histogram of Java object heap, a list of different types of objects and their counts and total sizes. 2016-12-14, ∼6224🔥, 2💬
💬 2016-12-14 Herong: Erik, you can look at the Java Management Extensions (JMX) API.
💬 2016-12-11 Erik Ostermueller: is there a java api to access this histogram? Thanks, --Erik
java.time.Instant - get(INSTANT_SECONDS) Error
This section provides a tutorial example on how to use getLong() to retrieve INSTANT_SECONDS value. Using get() will result an exception. 2016-08-03, ∼1807🔥, 2💬
💬 2016-08-02 G: the valid values range is outside of int, use getLong() instead of get(),
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