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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, 233👍, 0💬

Reading RSA Private and Public Key Files
This section provides a tutorial example on running the test program JcaKeyFactoryTest.java to generate, write, read and convert RSA private and public keys. 2022-10-01, 232👍, 0💬

javac - Java Compilation Command and Options
This section describes what are the commonly used command line options for the Java compiler - 'javac' tool. 2022-10-01, 232👍, 0💬

Garbage Collection and Unused Objects
This section describes what is garbage collection and what is an unused object. 2022-10-01, 227👍, 0💬

jinfo - Changing HotSpot VM Option
This section provides a tutorial example on how to set a new value to a HotSpot VM option on a given JVM process using the 'jinfo' tool. 2022-10-01, 226👍, 0💬

jimage - The JIMAGE File Tool
This chapter provides tutorial notes on 'jimage', the JIMAGE File Tool. Topics include introduction of JIMAGE file format; 'jimage' command options; viewing and extracting JIMAGE file with 'jimage'; summary of Java file types and related tools. 2022-10-01, 226👍, 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, 225👍, 0💬

Running EncodingSampler.java with UTF-8, UTF-16, UTF16-BE
This section provides a tutorial example on how to run the character encoding sample program with UTF-8, UTF-16, and UTF16-BE encodings, which are all Unicode character set encodings. 2022-10-01, 224👍, 0💬

Compiling Hello.java - My First Java Program
This section provides a tutorial example on how to compile a Java program using the 'javac' tool without any options. 2022-10-01, 224👍, 0💬

java.time.Instant Usage Examples
This section provides a tutorial example on how to use the java.time.Instant class to capture the current time, and to retrieve Epoch-Second value and Nanosecond-of-Second value. The system clock on Windows only supports millisecond resolution. 2022-10-01, 221👍, 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, 220👍, 0💬

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, 220👍, 0💬

jmc - JMX Console via MBean Server
This section provides a tutorial example on how to use 'jmc' JMX Console via MBean Server. The dashboard shows live meters of Used Java Heap Memory, JVM CPU Usage, and Live Set + Fragmentation. 2022-10-01, 219👍, 0💬

"jdeprscan jar_file" - Deprecated API of JAR File
This section provides a tutorial example on how to use 'jdeprscan' command to scan for deprecated APIs of a given JAR file. 2022-10-01, 219👍, 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, 216👍, 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, 216👍, 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, 215👍, 0💬

"jdeps --inverse --require ..." - Reverse Dependencies
This section provides a tutorial example on how to use 'jdeps --inverse' command to show reverse dependencies of a given Java module. 2022-10-01, 214👍, 0💬

Calculating Memory Usage of an Array
This section provides a tutorial example on how to calculate memory usage of a large array. 2022-10-01, 213👍, 0💬

Converting Secret Keys to and from Byte Arrays
This section provides a quick introduction of the SecretKeySpec class and the KeySpec interface. They can be used to convert secret keys into byte arrays to store them in external files. 2022-10-01, 206👍, 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, 206👍, 0💬

Adding Threads and Thread Groups
This section provides a tutorial example on how to add threads and thread groups to the 'system' ThreadGroup tree. 2022-10-01, 205👍, 0💬

java.util.DateFormat - Formatting Date Objects to Strings
This section provides a tutorial example on how to use java.util.DateFormat and java.util.SimpleDateFormat classes to convert or format data objects into text strings in a specific calendar in various locales. 2022-10-01, 200👍, 0💬

"jcmd 0 Thread.print" - Generating Thread Dump
This section provides a tutorial example on how to use the 'jcmd 0 Thread.print' command to generate a thread dump of a given JVM. 2022-10-01, 200👍, 0💬

<< < 1 2 3 4 5 6 7 8 9 10 … > >>   Sort: Rank

Android ASP Astrology Bitcoin Blowfish Built-in C# Calendar CD-DVD Chinese Cryptography DES 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 Reference REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO