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Use "interface" as Annotation
This section provides a tutorial example on how to use 'interface' type to do the same job, roughly, as 'annotation' type.
2022-10-01, ∼247🔥, 0💬

CrashThread2.java - Thread Testing Program
This section describes a thread testing programs, CrashThread2.java, that keep adding new thread in a while loop.
2022-10-01, ∼247🔥, 0💬

Managing Cookies in JSP Pages
This chapter provides tutorial notes and example codes on managing cookies in JSP pages. Topics include what is a cookie; sending and receiving cookies in JSP pages; what is persistent cookies; setting cookie properties; dumping HTTP response.
2022-10-01, ∼247🔥, 0💬

Xerces2 Sample Program dom.Counter
This section provides a tutorial example on how to use dom.Counter to count total number of elements, attributes, etc. in an XML document using DOM technology.
2022-10-01, ∼247🔥, 0💬

Discontinued: getTime - Get the Current Time
This chapter provides a quick introduction of the free Web service, getTime. Topics include usage description of getTime; HTTP request sample; and HTTP response sample.
2022-10-01, ∼247🔥, 0💬

questionSearch - HTTP Request Sample
This section provides a request message sample of questionSearch Web service.
2022-10-01, ∼247🔥, 0💬

Method Parameter Arrays
This section describes method parameter arrays, which can be used as the last parameter in method definition to take an undefined number of parameters.
2022-10-01, ∼247🔥, 0💬

MySQL Server Data Backups on CentOS
This section provides a tutorial example on how to create backups of MySQL databases and load it back to another MySQL server for MySQL 8.0 server on CentOS 8 systems.
2022-10-01, ∼247🔥, 0💬

Archived: Sending Text in UTF8 Encoding to MySQL 5
This section provides a test on sending non-ASCII character strings to MySQL 5 server in UTF8 encoding.
2022-10-01, ∼247🔥, 0💬

Selection Sort - Implementation Improvements
This section provides discussion on how to improve the performance of the Selection Sort implementation. There is no easy way to improve the Java implementation.
2022-10-01, ∼247🔥, 0💬

Shell Sort - Algorithm Introduction
This section describes the Shell Sort algorithm - A complex and fast sorting algorithm that repeatedly divides the entire collection into sub-collections by taking every h-th element for a fixed gap h and performs an insertion sort each sub-collection.
2022-10-01, ∼247🔥, 0💬

Object References and Garbage Collection
This chapter provides tutorial notes and example codes on Object References and Garbage Collection. Topics include object reference types; strong reference test program; final reference test program; dead objects with final references in heap; performance impact of final references.
2022-10-01, ∼247🔥, 0💬

Performance Jumps Not Related to GC
This section provides a tutorial showing that Performance jumps are not related garbage collections.
2022-10-01, ∼247🔥, 0💬

Archived: 640/400/40MB Test on HotSpot Client 1.7
This section provides a tutorial example on running GCTest2.java on HotSpot Client JVM 1.7.0_45 with 640MB memory limit and a 400MB base plus 40MB fluctuating memory usage with object size of 1.25MB.
2022-10-01, ∼247🔥, 0💬

Archived: 1076/800/80MB Test on HotSpot Client 1.7
This section provides a tutorial example on running GCTest2.java on HotSpot Client JVM 1.7.0_45 with 1076MB memory limit and a 800MB base plus 80MB fluctuating memory usage with object size of 1.25MB. It crashed almost immediately.
2022-10-01, ∼247🔥, 0💬

Use "os" Module to Create Child Processes
This section provides tutorial examples on how to use os.system(), os.execl(), os.fork(), os.popen() methods to create child processes in different ways.
2022-10-01, ∼247🔥, 0💬

Inserting BLOB Values with setBytes() Method
This section describes how to insert BLOB values with the PreparedStatement.setBytes() method.
2022-10-01, ∼247🔥, 0💬

What Is Conda
This section provides a quick introduction on Conda, which is a powerful open source environment and packager manager that allows you to install multiple environments for multiple versions of software packages and their dependencies and switching easily between them.
2022-10-01, ∼247🔥, 0💬

Unicode > Big5 轉換: 第 12 部分 - U+5E7B 到 U+600C
本節列出了 Unicode 到 Big5 代碼轉換表的第 12 部分 - Unicode U+5E7B 到 U+600C。
2024-01-31, ∼246🔥, 0💬

Introduction of Time
This chapter provides an introduction of time. Topics include what is time; standard unit to measure duration of time; how long is one 'second'.
2022-10-05, ∼246🔥, 0💬

Archived: Running the Debug Binary Package
This section provides a tutorial example on how to run the debug binary package that has been installed on the Android emulator.
2022-10-01, ∼246🔥, 0💬

Number Object and Numeric String Conversion
This chapter provides tutorial notes and example codes on numeric string format. Topics include using java.util.NumberFormat.format( )method to format numeric values into text strings; using java.util.DecimalFormat.parse( )method to parse date strings into objects.
2022-10-01, ∼246🔥, 0💬

java.util.ResourceBundle - Resource Bundle Abstract Class
This section provides a tutorial example on how to create resource bundles (localization key names with their localized text messages) as subclasses of the java.util.ResourceBundle abstract class.
2022-10-01, ∼246🔥, 0💬

Key Pair Sample Program - JcaKeyPair.java
This section provides a tutorial example on how to write simple program to generate a pair of private key and public key for the RSA or DSA algorithm.
2022-10-01, ∼246🔥, 0💬

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