Jens A. Lohmann jenslohmann

## gist:2bcb472b07e5d6cc4d2df51d4d511bd7
Download Community Ed. GraalVM from https://github.com/graalvm/graalvm-ce-builds/releases
Unpack.
# sudo mv graalvm-ce-19.0.0 /Library/Java/JavaVirtualMachines
sudo mv graalvm-ce-java11-20.0.0 /Library/Java/JavaVirtualMachines

Verify: /usr/libexec/java_home -V

vi ~/.zprofile
--- Add: ---
export JAVA_HOME=$(/usr/libexec/java_home -v 11)

## gist:e31bf324a60d1a3961bd7cbcfaf8547e
while true; do printf 'HTTP/1.1 200 OK\n\n' | nc -4 -k -l 23456; done

## PoorMansInjector.java
package dk.jlo.util;


import java.lang.reflect.Field;

/**
 * Injects an object into a (private) field in a bean; primarily for poor man's injection for unit testing when not running in a Dependency Injection environment.<p>
 * Travels through super classes if necessary.<p>
 * Usage:
 * <pre>

## setTabTitle
#!/bin/sh
echo "\033]0;${1}\007\c"

## gist:2328aa57dda9460ab9522d03413257ac
/@xsi:nil = 'true'

## javameminfo
#!/bin/bash
if [ $(ps -ef|grep -E "java.*jboss"|grep -v grep|wc -l) -ne 1 ] ; then
    echo "Too many (or no) java processes!"
else
    jmap -heap $(ps -ef|grep -E "java.*jboss"|grep -v grep|tr -s " "|cut -d\  -f2)
fi

## passswordgen
#!/bin/bash
while pwd=$(openssl rand -base64 9); [[ ${pwd} == *[[:punct:]]* ]]; do :; done; echo ${pwd}

## Add datasource that will reconnect after network failure
data-source add --jndi-name=java:/<blah>DS --name=<blah>Pool --connection-url=jdbc:oracle:thin:@//<db-hostname>:1521/<SID/db.service> --driver-name=oracle --driver-class=oracle.jdbc.driver.OracleDriver --user-name=<db-user> --password=<db-user-password> --check-valid-connection-sql=select\ 1\ from\ dual --validate-on-match=false --background-validation=true --background-validation-millis=20000

## Wildfly 9.0 startup scripts for Debian 8.2 (systemd) inspired by files from wildfly 10 distribution
groupadd -r wildfly
useradd -r -g wildfly -d /opt/wildfly -s /sbin/nologin wildfly

== Install WildFly

tar xvzf wildfly-9.0.1.Final.tar.gz -C /opt
ln -s /opt/wildfly-9.0.1.Final /opt/wildfly
chown -R wildfly:wildfly /opt/wildfly

== Configure systemd

## angular-focus-example.html
...
<textarea focus-on="IWantFocusWhenButtonClicked"></textarea>
<button ng-click="doFocus()">Focus</button>
...
	Download Community Ed. GraalVM from https://github.com/graalvm/graalvm-ce-builds/releases
	Unpack.
	# sudo mv graalvm-ce-19.0.0 /Library/Java/JavaVirtualMachines
	sudo mv graalvm-ce-java11-20.0.0 /Library/Java/JavaVirtualMachines

	Verify: /usr/libexec/java_home -V

	vi ~/.zprofile
	--- Add: ---
	export JAVA_HOME=$(/usr/libexec/java_home -v 11)
	package dk.jlo.util;


	import java.lang.reflect.Field;

	/**
	* Injects an object into a (private) field in a bean; primarily for poor man's injection for unit testing when not running in a Dependency Injection environment.<p>
	* Travels through super classes if necessary.<p>
	* Usage:
	* <pre>
	#!/bin/bash
	if [ $(ps -ef\|grep -E "java.*jboss"\|grep -v grep\|wc -l) -ne 1 ] ; then
	echo "Too many (or no) java processes!"
	else
	jmap -heap $(ps -ef\|grep -E "java.*jboss"\|grep -v grep\|tr -s " "\|cut -d\ -f2)
	fi
	#!/bin/bash
	while pwd=$(openssl rand -base64 9); [[ ${pwd} == [[:punct:]] ]]; do :; done; echo ${pwd}
	groupadd -r wildfly
	useradd -r -g wildfly -d /opt/wildfly -s /sbin/nologin wildfly

	== Install WildFly

	tar xvzf wildfly-9.0.1.Final.tar.gz -C /opt
	ln -s /opt/wildfly-9.0.1.Final /opt/wildfly
	chown -R wildfly:wildfly /opt/wildfly

	== Configure systemd
	...
	<textarea focus-on="IWantFocusWhenButtonClicked"></textarea>
	<button ng-click="doFocus()">Focus</button>
	...