SubOptimal

import static java.lang.System.out;
import java.lang.reflect.Field;
import java.util.AbstractList;
import java.util.ArrayList;

/**
 * Related to an answer to this Twitter post
 * https://twitter.com/JosePaumard/status/864938907183480832
 *
 * @author Frank Dietrich <Frank.Dietrich@gmx.li>

SubOptimal

public class ReportCpuCount {
    public static void main(String[] args) throws Exception{
        while(true){
           System.out.printf("#Found %d CPUs%n", Runtime.getRuntime().availableProcessors());
           Thread.sleep(1000);
        }
    }
}

SubOptimal

import com.sun.tools.attach.VirtualMachine;

public class AttachClient {

    public static void main(String[] args) throws Exception {
      String pid = args[0];
        VirtualMachine vm = VirtualMachine.attach(pid);
        System.out.println("vm = " + vm);
        vm.detach();
    }

SubOptimal

# sometimes the autohide of the Windows taskbar doesn't work anymore
# and the taskbar is showed permanently
#
# beside killing and restarting the explorer.exe process it's enough
# forcing to display a new tooltip
[reflection.assembly]::loadwithpartialname("System.Windows.Forms")
[reflection.assembly]::loadwithpartialname("System.Drawing")
$notify = new-object system.windows.forms.notifyicon
$notify.icon = [System.Drawing.SystemIcons]::Information
$notify.icon = [System.Drawing.SystemIcons]::Error

SubOptimal

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>sub.optimal</groupId>
    <artifactId>SquirrelSqlCLI</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>

SubOptimal

package sub.optimal.benchmark;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Random;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Fork;

SubOptimal

// anser for: http://stackoverflow.com/questions/26656427/how-to-extract-tar-gz-including-multi-byte-characters-and-prohibited-characters
package tar;

import org.apache.tools.tar.*;
import java.io.*;

import java.nio.file.*;
import java.util.zip.GZIPInputStream;

public class Targz {

SubOptimal

# Linux / Mac
echo 'java.lang.System.out.println("Hello World")' | java -cp ${JAVA_HOME}/lib/tools.jar com.sun.tools.script.shell.Main

# Windows
echo java.lang.System.out.println("Hello World") | java -cp %JAVA_HOME%/lib/tools.jar com.sun.tools.script.shell.Main

SubOptimal

/**
 *
 * Today was on stackoverflow a question about how to convert a C++ source into
 * Java source. The code was implementing a scoller like in the movie "The Matrix".
 *
 * As the question was not fulfilling the stackoverflow requirements for a valid
 * questions, it has been deleted in the meantime by the moderators. Which is a
 * little bit bad, as the code was nice.
 * 
 * So I create this gist with my answer I would like to have posted to the