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JceSecretKeyTest.java - Secret Key Test Program
This section provides a quick tutorial example on how to write a sample program to generate a secret key for Blowfish, DES, or HmacMD5 encryption, save the secret key to a file, and read it back.
2022-10-01, 356🔥, 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, 356🔥, 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, 348🔥, 0💬

Archived: Downloading and Installing JDK 1.7
This section describes how to download and install Java SE 7 Update 7 (JDK 7u7) on a Windows system.
2022-10-01, 347🔥, 0💬

jarsigner - JAR File Signer
This chapter provides tutorial notes on 'jarsigner' tool. Topics include generating a self-signed certificate; signing a JAR file; verifying a signed JAR file; using trusted certificate; signature files in JAR file.
2022-10-01, 339🔥, 0💬

jconsole - Java Monitoring and Management Console
This chapter provides tutorial notes on the Java monitoring and management console, jconsole. Topics include description of JMX technology, list of 'jconsole' command options, turning on JMX agent for local and remote connection, running 'jconsole' to monitor local and remote Java applications.
2022-10-01, 332🔥, 0💬

JVM Troubleshooting Tools
This chapter tutorial notes on JVM troubleshooting tools. Topics include 'jinfo' to check JVM option values, 'jstack' to dump stack traces and detect deadlocks, 'jmap' to print heap histogram and dump heap files, 'jhat' to browse head files and run OQL queries.
2022-10-01, 331🔥, 0💬

javax.crypto.SecretKey - The Secret Key Interface
This section provides a quick introduction of secret key and symmetric encryption algorithm. The secret key interface, javax.crypto.SecretKey, is also described.
2022-10-01, 330🔥, 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, 329🔥, 0💬

Archived: Downloading and Installing Java 8
This section describes how to download and install Java 8 (Java Standard Edition Development Kit 1.8) on Windows.
2022-10-01, 322🔥, 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, 321🔥, 0💬

Running EncodingSampler.java with GB18030
This section provides a tutorial example on how to run the character encoding sample program with GB18030, which is the newest Chinese character set encoding.
2022-10-01, 320🔥, 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, 320🔥, 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, 319🔥, 0💬

jpackage - Binary Package Builder
This chapter provides tutorial notes on 'jpackage' tool. Topics include introduction of jpackage; running jpackage to build *.dmg and *.pkg packages on macOS computers.
2022-10-01, 317🔥, 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, 314🔥, 0💬

javac - The Java Program Compiler
This chapter describes the Java compilation tool 'javac'. Topics include listing of 'javac' options, specifying class path with '-classpath', specifying source path with '-sourcepath', processing 'import' statements, generating debugging information with '-g'.
2022-10-01, 313🔥, 0💬

Archived Tutorials
This chapter contains some outdated tutorial notes and example codes from previous versions of this book.
2022-10-01, 312🔥, 0💬

Java Tools Included in JDK
This chapter provides tutorial notes on Java tools included in the Oracle JDK package. Topics include downloading and installing the latest JDK version on Windows; using 'javac' and 'java' tools to compile and run Java program; listing Java tools in the 'bin' sub-directory of Java home directory.
2022-10-01, 310🔥, 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, 310🔥, 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, 308🔥, 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, 308🔥, 0💬

"jaccessinspector" - Accessible Information Examiner
This section provides a tutorial example on how to use 'jaccessinspector' to examine accessible information of objects that trigger events in a Java GUI application on Windows computers.
2022-10-01, 307🔥, 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, 298🔥, 0💬

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