In this post we will see how we can use the JVMTI GetSystemProperties to get a list of system properties. library.cpp #include "jvmti.h" #include JNIEXPORT jint JNICALL Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) { std::cout GetEnv((void **) &jvmti, JVMTI_VERSION_1_2); if (result != JNI_OK) { std::cerr [...]
Sachin Handiekar
In this tutorial we will see how we can use of() and copyOf() factory methods in Java 9 to create immutable collections. Project Setup 1. JDK 9+ Code Let’s see how we can create an immutable list using Collections.unmodifiableList and List.of (Java 9+) /** * List */ //Before Java 9 List names = new ArrayList(); names.add("London"); [...]
Sachin Handiekar
A code example showing the use of Comparator in Java 8 using Comparator.comparing method. public class Student { private String name; private String subject; private double grade; public Student(String name, String subject, double grade) { this.name = name; this.subject = subject; this.grade = grade; } public String getName() { return [...]
Sachin Handiekar
A list of basic Docker commands – Sachin:~ SachinHandiekar$ docker run -d -p 8080:80 nginx952a999c0f48a712023ca8d469eba5c8fbe0ee07554d736dd935f09db511f76d Sachin:~ SachinHandiekar$ docker run -d -p 8081:80 nginx751163aa99f994f4bd0cb3ad5c42872234ce9b0ee68781c6463f86fbd55c86bc List Docker Instances Sachin:~ SachinHandiekar$ docker ps [...]
Sachin Handiekar
Let’s see how we can use Travis CI for building a C/C++ project on Travis CI. We’ll use the consoleRadio C application which is used to stream Shoutcast Radio as an exampleThe .travis.yml file for the consoleRadio application looks like the following – Installing a custom version of cmake We can install a custom version [...]
Sachin Handiekar
A simple JVMTI agent in Windows using MinGW/Cygwin.
Sachin Handiekar
In jBoss Portal 6.1 / jBoss EAP 6, the access logs can be enabled by adding <access-log> element inside the virtual-server (web subsystem) in standalone.xml Using CLI Ref : https://access.redhat.com/solutions/185383
Sachin Handiekar
We might require to ignore a jUnit test based on a certain condition. jUnit just comes up with a @Ignore annotation which can be used to ignore the test. We can use the below code to check if the condition has been met or not to ignore a test. Reference : [...]
Sachin Handiekar
We can change the logging level of a package in jBoss EAP 6 or jBoss Portal 6.1 without restarting the server using the CLI command.
Sachin Handiekar
Steps to add a custom error page in GateIn (jBoss Portal 6.1) 1. Create the error pages and place them in the $JPP_HOME/gatein/gatein.ear/portal.war/error/ directory. For each error code that shall have its custom error page, add the element to the $JPP_HOME/gatein/gatein.ear/portal.war/WEB-INF/web.xml file. This element specifies what [...]
Sachin Handiekar