Run Groovy Project Without Compilation Using Gradle

To be honest it is automatically compiled by Gradle. All changes made into "buildSrc/src/main/groovy" are automatically compiled during startup.

Key feature of Gradle is how nicely it manages "buildSrc" directory.

Here is sample project https://bitbucket.org/bugs_/samples/src/default/RunGroovyProjectWithoutCompilationUsingGradle/

Update file inside zip inside zip inside zip. Using Gradle, Groovy, Closure

Easy way to modify content of zip file inside scripts. Using Gradle/Groovy

short example:

	dependencies {
	classpath 'org.zeroturnaround:zt-zip:1.8'
	classpath 'org.apache.commons:commons-io:1.3.2'
	}
	// ----------------------------
	import org.apache.commons.io.FileUtils
	import org.zeroturnaround.zip.ZipUtil
	/**
	*
	* Extract zipFile into directory in temp, then call closure and give this directory as parameter to closure
	* (closure update this directory), then pack this directory back into ZipFile
	* Nice method :) */
	private void extractZipAndThenPackItBack(File zipFile, Closure closure) {
	def extractedDirectory
	try {
	//Extract
	extractedDirectory = getTempDir()
	ZipUtil.unpack(zipFile, extractedDirectory);
	//Call closure
	closure.call(extractedDirectory)
	//Pack result back
	zipFile.delete()
	ZipUtil.pack(extractedDirectory, zipFile);
	} finally {
	FileUtils.deleteDirectory(extractedDirectory)
	}
	}
	//Sample usage:
	extractZipAndThenPackItBack(zipFile) { File directoryWhereZipWasExtracted ->
	//update directory where zip was extracted
	}

view raw extractZipAndThenPackItBack.groovy hosted with ❤ by GitHub

And here is full sample project: https://bitbucket.org/bugs_/samples/src/default/ZipUpdaterGroovyGradleClosure/

Count number bytes in UTF-8 for Java String

https://bitbucket.org/bugs_/utils/src/default/CoreUtils/src/main/java/cz/vondr/coreutils/utf/Utf8LengthUtil.java

• Problem 1: You have Java String variable. And you need get number of bytes in UTF-8
• Problem 2: You need split String into multiple Strings, in the way that each of them have exact number of bytes. (expect last part of course :) )

Thanks to stackoverflow.com

MXBeans ovládání z command line

MX Beany jsem vždy ovládal pomoci JConsole. To ale nejde bez grafického prostředí

Tady je jeden ze způsobů, jak něco spustit z command line
http://wiki.cyclopsgroup.org/jmxterm/download.html

stáhnout jmxterm-1.0-alpha-4-uber.jar

java.exe -jar jmxterm-1.0-alpha-4-uber.jar    (potřebuje to JDK ne jen JRE)

prikaz "jvms"
  (vylistuje jvm procesy)

prikaz "open "
  (se pripoji k procesu)

prikaz "run -d MyApp -b MyApp:name=MyBean nameOfMethod"
  (se spustí danou metodu na dane beane)