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java.time.ZonedDateTime - Calendar and Timezone
This section describes the java.time.ZonedDateTime class that represents a moment of time expressed in 3 components, ISO 8601 date, time of day, and timezone.
2022-10-01, 225🔥, 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, 225🔥, 0💬

jrunscript - Script Code Shell
This chapter provides tutorial notes on 'jrunscript' tool. Topics include introduction of jrunscript; running JavaScript code interactively or in batch mode.
2022-10-01, 224🔥, 0💬

java.time.OffsetDateTime Usage Examples
This section provides a tutorial example on how to use the java.time.OffsetDateTime class to record and manipulate date and time local to specific UTC offset. Operations on java.time.OffsetDateTime objects respect ISO 8601 calendar rules. But they do not respect local timezone rules.
2022-10-01, 223🔥, 0💬

bitStringTest.java - Testing Program
This section provides tutorial example program to test setBit(), getBit(), and rotateLeft() to manage bit strings in byte arrays.
2022-10-01, 223🔥, 0💬

What Is HTTPS?
This section provides a quick introduction to HTTPS (Hypertext Transfer Protocol Secure) - A combination of HTTP (Hypertext Transfer Protocol) and SSL (Secure Socket Layer) or TLS (Transport Layer Security).
2022-10-01, 222🔥, 0💬

What Are Bits and Bytes
This section describes bits and bytes as data storage units and as data types.
2022-10-01, 221🔥, 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, 221🔥, 0💬

Java Modules - Java Package Aggregation
This chapter provides tutorial notes on Java modules. Topics include Java module descriptor; module dependency; exporting package out of module; creating module JAR/JMOD file; creating custom JRE with added modules; testing package visibilities.
2022-10-01, 220🔥, 0💬

Creating Class Type Objects
This section describes how class type objects can be created using the 'new' operator and special methods.
2022-06-24, 220🔥, 1💬

💬 2022-06-24 waryam: ok

"jcmd 0 help" - Listing JVM Diagnostic Commands
This section provides a tutorial example on how to use 'jcmd 0 help' command to get a list of diagnostic commands that are supported in each running JVM.
2022-10-01, 219🔥, 0💬

Annotation Statements and Declarations
This chapter provides tutorial notes on annotation. Topics include declaring new annotation type; using 'interface' for annotations; specifying default values to annotation elements; shorthand format of annotation invocation with a single element or no element; obtaining annotation information at ru...
2022-10-01, 219🔥, 0💬

No-Element (Marker) Annotation Invocation
This section provides a tutorial example on how to use the marker format in annotation invocation statements, if no annotation elements are needed.
2022-10-01, 219🔥, 0💬

"assert" Statements
This section describes 'assert' statement, which allows you to make an assertion in the execution flow. 'assert' statements are executed only when -ea' JVM option is specified.
2022-10-01, 218🔥, 0💬

The "Runnable" Interface - Creating Thread Objects with Runnable Objects
This section provides a tutorial example on how to create new threads with the 'Thread' class and runnable objects, which are created with classes that implements the 'Runnable' interface.
2022-10-01, 217🔥, 0💬

Comparing Message Digest Output of MD5 and SHA
This section a tutorial example on how to view and compare message digest output from two standard message digest algorithms MD5 and SHA.
2022-10-01, 216🔥, 0💬

Reading DSA Private and Public Key Files
This section provides a tutorial example on running the test program JcaKeyFactoryTest.java to generate, write, read and convert DSA private and public keys.
2022-10-01, 216🔥, 0💬

Lambda Expressions and Method References
This chapter provides tutorial notes on lambda expressions and method references introduced in Java 8. Topics include lambda expression syntax; method reference syntax; single abstract method interface (functional interface); using lambda expressions in stream pipeline operations.
2022-10-01, 216🔥, 0💬

javax.crypto.KeyGenerator - Generating Secret Keys
This section provides a quick introduction of the secret key generation class, javax.crypto.KeyGenerator.
2022-10-01, 215🔥, 0💬

Private key and Public Key Pair Generation
This chapter provides tutorial notes and example codes on private key and public key pair generation. Topics include public key encryption algorithms, RSA, DSA and DiffieHellman; private key and public key pair generation class and sample program; RSA, DSA, and DiffieHellman key pair samples.
2022-10-01, 214🔥, 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, 214🔥, 0💬

Performance Comparison of String and StringBuffer
This section provides a tutorial example to do a performance comparison of 3 classes: String, StringBuffer, SimpleStringBuffer.
2022-10-01, 214🔥, 0💬

XSD (XML Schema Definition) - XML Validation
This chapter provides tutorial notes and example codes on XSD (XML Schema Definition). Topics include writing an XML XSD validator using JDK built-in XML parser; using 'http://apache.org/xml/feature s/validation/schema'feature on XMLReader objects; using Schema and Validator objects.
2022-10-01, 213🔥, 0💬

Certificates and Certificate Chains
This section describes certificate and certificate chain. A certificate contains someone's public key signed by a trusted authority.
2022-10-01, 213🔥, 0💬

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