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// 1. create a sub class inherent to Thread class
static class MyThread extends Thread {

    @Override
    public void run() {
        System.out.println("Hello : "+Thread.currentThread().getName());
    }
}
MyThread myThread = new MyThread();
myThread.start();

wkdalsgh192

import java.util.function.BinaryOperator;

public class MethodReferencesExamples {
	
	public static <T> T mergeThings(T a, T b, BinaryOperator<T> merger) {
		return merger.apply(a, b);
	}
	
	public static String appendStrings(String a, String b) {return a+b;}
	

wkdalsgh192

package dataStructure;

public class CustomLinkedList<E> {
	// Linked List Node
	private CustomNode<E> head; // head node
	private CustomNode<E> tail; // tail node
	private int size;
	
	public int size() {
		return size;

wkdalsgh192

public class OS_Critical_Section_Solution {
	public static void main(String[] args) {
		
		boolean[] flag = new boolean[2]; // flag[0] -> Process A, flag[1] -> Process B
		// Strict Alternation
		int cnt = 0;
		while(true) { 
			flag[0] = true;
			while (flag[1]==true);
			System.out.println("V");

wkdalsgh192

python manage.py runserver

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python manage.py startapp blog

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django-admin startproject first_project

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pip install django

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# install spotipy in your command line 
pip install spotipy --upgrade

# import spotipy to set up your client account
from spotipy.oauth2 import SpotifyClientCredentials
import spotipy

# copy your client id and secret key on your spotify dashboard
# set them up using spotipy client credentials object to let spotipy retrive data by your query
client_id="your_id"

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public class UserBean {

  // fields to construct a bean. Recommended to make all private in singleton design pattern.
	private String name;
	private int age;
	private boolean male;
	
  // bean must have its default constructor. 
	public UserBean() {}
	public UserBean(String name, int age, boolean male) {