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jcmd - JVM Diagnostic Tool Command
This section describes what is 'jcmd' (Java jcmd Tool) - is a command line tool to run diagnostic commands against a given JVM on the local machine.
2022-10-01, ∼563🔥, 0💬

jconsole - Connecting to a Remote JMX Agent
This section provides a tutorial example on how to run 'jconsole' to connect to a JMX agent running on a remote machine, and how to see memory usage detail information.
2022-10-01, ∼554🔥, 0💬

Searching for Instances with OQL Statements
This section provides a tutorial example on how to write an OQL (Object Query Language) query statement to search for object instances with specific conditions.
2022-10-01, ∼554🔥, 0💬

Using JAR Files in Java Class Paths
This section provides a tutorial example on how to use JAR files in class paths during Java compilation and execution time.
2022-10-01, ∼545🔥, 0💬

java.util.DecimalFormat.parse() - Parsing Strings to Number Objects
This section provides a tutorial example on how to use the java.util.DecimalFormat.parse( )method to parse or convert numeric strings to number objects.
2022-10-01, ∼540🔥, 0💬

java - The Java Program Launcher
This chapter describes the Java launch tool 'java'. Topics include listing of 'java' options, specifying class path with '-classpath', specifying an executable JAR file with '-jar', specifying non-standard options with '-X', launching Java programs without the console window.
2022-10-01, ∼540🔥, 0💬

Converting java.util.GregorianCalendar to java.time.ZonedDateTime
This section provides a tutorial example how to migrate Java code from the old java.util.GregorianCalendar class to the new java.time.ZonedDateTime class.
2022-10-01, ∼537🔥, 0💬

"jpackage -t msi" - Package for Windows
This section provides a tutorial example on how to use 'jpackage -t msi' command to generate a binary distribution package from Java application JAR file in *.msi format for Windows computers. But 'jpackage' requires a third-party tool, WiX, to work.
2022-10-01, ∼530🔥, 0💬

jdeps - The Java Class Dependency Analyzer
This chapter provides tutorial notes on 'jdeps', the Java Class Dependency Analyzer. Topics include 'jdeps' command options; showing package or class level dependencies of a given class or jar file; showing package or class level reverse dependencies of a given Java module.
2022-10-01, ∼528🔥, 0💬

jdb - The Java Debugger
This chapter provides tutorial notes on the Java debugger 'jdb'. Topics include starting 'jdb' to debug an application, running 'jdb' separately from the application, debugging remote application, debugging multi-thread application, listing and switching execution threads.
2022-10-01, ∼527🔥, 0💬

Listing Instance Counts of All Classes
This section provides a tutorial example on how to list object instance counts of all loaded classes in a Java heap dump file through the 'jhat' Web server.
2022-10-01, ∼527🔥, 0💬

Archived Tutorials
This chapter contains some outdated tutorial notes and example codes from previous versions of this book.
2022-10-01, ∼527🔥, 0💬

Partial Date and Time Objects and Classes
This section provides a tutorial example on how to use Date-Time classes that represents partial date and time objects like java.time.LocalDate, java.time.LocalDate, etc.
2022-10-01, ∼517🔥, 0💬

jinfo - VM Option Value Checker
This section provides a tutorial example on how to use the 'jinfo' tool to view the current value of a given HotSpot VM option.
2022-10-01, ∼511🔥, 0💬

"import" Statements Processed by "javac"
This section provides a tutorial example on how the 'javac' tool process two types of 'import' statements differently when loading required class types.
2022-10-01, ∼506🔥, 0💬

Listing Java Tools in JDK
This section provides a list of Java tools included in the Oracle JDK package for Windows systems.
2022-10-01, ∼505🔥, 0💬

JDK - Java Development Kit
This chapter provides tutorial notes on installing JDK on your own Windows system to run Java programs. Topics include downloading and installing JDK; compiling and executing Java programs, installing JDK documentation.
2022-10-01, ∼504🔥, 0💬

javac - Using CP1252 to Process Source File
This section provides a tutorial example showing how 'javac' processing Java source code files with CP1252 encoding.
2022-10-01, ∼498🔥, 0💬

jconsole - Connecting to a Local JMX Agent
This section provides a tutorial example on how to run 'jconsole' to connect to a JMX agent running on a local machine, and how to monitor the running Java application by reading head memory usage, CPU usage, number of threads and classes.
2022-10-01, ∼497🔥, 0💬

What Is "keystore"?
This section provides a quick introduction of 'keystore' - a database file used to store private keys and public key certificates. 'keystore' file can be managed by the KeyStore class or the 'keytool' command.
2022-10-01, ∼495🔥, 0💬

Class and Interface Hierarchy
This section describes Java class and interface hierarchical relationships to support object inheritance: superclass-subclass relation, superinteface-subinterface relation, and interface-class relation.
2022-10-01, ∼495🔥, 0💬

Literal Formats for Integers
This section describes 4 literal formats for integer values: decimal, hex, octal and binary integer literals. The default integer literal data type is 'int'.
2022-10-01, ∼493🔥, 0💬

Testing JDK Installation
This section describes how to compile and run Java programs to test JDK installation on Windows system.
2022-10-01, ∼490🔥, 0💬

jlink - The JRE Linker
This chapter provides tutorial notes on 'jlink', the JRE Linker. Topics include introduction of jlink; building JRE with java.base only; building application JRE; generating application launching scripts.
2022-10-01, ∼489🔥, 0💬

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