jinahya

import static java.lang.Double.doubleToLongBits;
import static java.lang.Float.floatToIntBits;
import static java.lang.Integer.toBinaryString;
import static java.lang.Long.toBinaryString;
import static java.lang.String.format;

public class FloatingPoints {

    private static String ieee754s(final int value) {

jinahya

import java.util.logging.Logger;

public enum EnumWithLogger {

    //private static Logger logger; // can't place here

    NONE {
        void world() {

            slogger.info("world");

jinahya

public class FloatIntBits {

    private static void printIntBits(float value) {
        System.out.println("-------------------------------------");
        System.out.printf("       value: %f\n", value);
        final int intBits = Float.floatToIntBits(value);
        final int rawIntBits = Float.floatToRawIntBits(value);
        System.out.printf("   toIntBits: 0x%08x %f\n", intBits, Float.intBitsToFloat(intBits));
        System.out.printf("toRawIntBits: 0x%08x %f\n", rawIntBits, Float.intBitsToFloat(rawIntBits));
    }

jinahya

#!/bin/sh
# by Jin Kwon <onacit_at_gmail.com>
# fetches all https://github.com/gruntjs/grunt-init-*.git repositories
# into to your ~/.grunt-init
# and (or) pull them all
# this script uses 'jq' command
gruntinit=~/.grunt-init
if [ ! -d $gruntinit ]; then
    echo making directory $gruntinit
    mkdir $gruntinit

jinahya

*ini*

jinahya

public class PrintNumberReverse {

    static void method1(final int number) {
	final char[] chars = Integer.toString(number).toCharArray();
	for (int i = chars.length -1; i >= 0; i--) {
	    System.out.print((char) chars[i]);
	}
	System.out.println();
    }

jinahya

import java.util.ArrayList;
import java.util.List;

public class VerifyOpenClose {

    private static final List<Character> parentheses = new ArrayList<Character>(){
	    {
		// odd -> opening
		// even -> cloosing
		add('('); // 0 opening

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@Entity
@NamedQueries({
    @NamedQuery(name = "Property.find",
                query = "SELECT p FROM Property AS p WHERE p.name = :name")
})
public class Property extends BaseEntity {
    
     public static Property findNamed(final EntityManager entityManager,
                                      final String name) {
        final TypedQuery<Property> typedQuery

jinahya

The Three Laws of Robotics

1. A robot must not harm a human. And it must not allow a human to be harmed.
2. A robot must obey a human's order, unless that order conflicts with the First Law.
3. A robot must protect itself, unless this protection conflicts with the First or Second Laws.

Handbook of Robotics, 2058 A.D.

jinahya

import java.util.concurrent.CountDownLatch;
import static java.util.concurrent.ThreadLocalRandom.current;
public class CountDownLatchDemo {
    public static void main(final String[] args) throws InterruptedException {
        final int count = 100;
        final CountDownLatch latch1 = new CountDownLatch(count);
        final CountDownLatch latch2 = new CountDownLatch(count);
        for (int i = 0; i < count; i++) {
            new Thread(() -> {
                    try {