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freeMemory() - Getting JVM Free Memory Information
This section provides a tutorial example on how to use freeMemory(), totalMemory(), and maxMemory() of the Runtime class to get JVM total and free memory information.
2022-10-01, ∼336🔥, 0💬

java.util.Calendar - The Abstract Calendar Class
This section provides a tutorial example on how to use calendar related classes: java.util.Calendar, java.util.GregorianCalendar, java.util.TimeZone, and java.util.SimpleTimeZone.
2022-10-01, ∼334🔥, 0💬

java.util.SimpleDateFormat.parse() - Parsing Date Strings to Objects
This section provides a tutorial example on how to use the java.util.SimpleDateFormat.par se()method to parse or convert date and time strings to date objects.
2022-10-01, ∼334🔥, 0💬

javadoc - Document Generator Command and Options
This section describes what are the commonly used command line options for the Java document generator - 'javadoc' tool.
2022-10-01, ∼334🔥, 0💬

Execution Threads and Multi-Threading Java Programs
This chapter provides tutorial notes and tutorial examples on execution threads and multi-threading programs. Topics include creating threads with thread classes and runnable objects; thread priorities and CPU time sharing; application data sharing; terminating running threads.
2022-10-01, ∼334🔥, 0💬

"javac -X" - Specifying Non-Standard Options
This section describes the Java compiler non-standard options, '-X...'.
2022-10-01, ∼332🔥, 0💬

Assert Statements and -ea" Option
This chapter provides tutorial examples and notes on Java assertion facility. Topics include 'assert' statements; '-ea' JVM option to enable assertion.
2022-10-01, ∼332🔥, 0💬

Deadlock Example - 5 Dining Philosophers
This section provides a Java program that simulates the deadlock example - 5 Dining Philosophers.
2022-10-01, ∼331🔥, 0💬

Archived: Downloading and Installing JDK 8
This section describes how to download and install Java SE 8 (JDK 7) on a Windows system.
2022-10-01, ∼331🔥, 0💬

jaotc - Java Ahead-Of-Time Compiler
This chapter provides provides a tutorial example on how to use 'jaotc' command to produce native code in the form of a shared library from Java bytecode files. But I didn't find any way to use the shared library.
2022-10-01, ∼330🔥, 0💬

Installing Latest JDK on macOS
This section provides a tutorial example on how to download and install the latest version JDK, which includes some nice Java tools, on a macOS system.
2022-10-01, ∼329🔥, 0💬

Primitive Data Types and Literals
This chapter provides tutorial notes and example codes on primitive data types and literals. Topics include 8 primitive data types; storage size of each data type; format rules on source code literals for each data type; example Java programs on primitive types.
2022-10-01, ∼329🔥, 0💬

"javap -private" - Listing Private Variables and Methods
This section provides a tutorial example of how to list all private and public variables and methods of a class with 'javap' with the '-private' option.
2022-10-01, ∼326🔥, 0💬

"keytool" - Key and Certificate Management Tool
This section provides a quick introduction of 'keytool' - a command line tool to manage private keys and public certificates in 'keystore' database file.
2022-10-01, ∼324🔥, 0💬

Fall-Through Behavior of "switch" Statements
This section provides a tutorial example that show the 'fall-through' behavior of 'switch' statements.
2022-10-01, ∼324🔥, 0💬

Archived: Downloading and Installing JDK 10
This section describes how to download and install JDK 10 on a Windows system.
2022-10-01, ∼323🔥, 0💬

HashSet, Vector, HashMap and Collection Classes
This chapter provides tutorial notes and example codes on collection classes. Topics include collection types: Set, List and Map; data structure types: Array, Linked List, Binary Tree, and Hash Table; commonly used JDK collection classes: HashSet, Vector, HashMap; search operation performance compar...
2022-10-01, ∼321🔥, 0💬

"java --module" - Launching Program from Module
This section provides a tutorial example on how to use 'java --module' command to launch a program that is packaged in a Java module.
2022-10-01, ∼320🔥, 0💬

"jdeprscan --list" - List All Deprecated APIs
This section provides a tutorial example on how to use 'jdeprscan --list' command to list all deprecated APIs of a specific JDK release.
2022-10-01, ∼320🔥, 0💬

Shift Operations - Left, Right or Unsigned Right
This section describes shift operations: 'Left Shift', 'Right Shift', and 'Unsigned Right Shift'. A tutorial example is provided to show you how shift operations work on 'int' data type values.
2022-10-01, ∼319🔥, 0💬

Default Values for Annotation Elements
This section provides a tutorial example on how to declare default values for annotation elements and how to use default values in annotation invocation statements.
2022-10-01, ∼317🔥, 0💬

java.time.Duration Usage Examples
This section provides a tutorial example on how to use the java.time.Duration class to capture and apply duration of time, and to retrieve days, hours, minutes, seconds and nanoseconds values.
2022-10-01, ∼316🔥, 0💬

Browsing Object Instance Values
This section provides a tutorial example on how to search for an object instance and browse its values and references in a Java heap dump file through the 'jhat' Web server.
2022-10-01, ∼315🔥, 0💬

Miscellaneous Tools
This chapter provides tutorial notes on some miscellaneous tools. Topics include using 'jaotc' to produce native code; using 'serialver' to generate unique value for 'serialVersionUID'.
2022-10-01, ∼315🔥, 0💬

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