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import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
* Source: https://stackoverflow.com/questions/7579227/how-to-get-the-given-date-string-formatpattern-in-java
*/
public class DateFormatFinder {

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package com.example.springbootswagger.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.context.annotation.PropertySource;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import springfox.bean.validators.configuration.BeanValidatorPluginsConfiguration;
import springfox.documentation.builders.ApiInfoBuilder;

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import com.fasterxml.jackson.databind.ObjectMapper;
    
private static void pojoToJson(Object object) throws JsonProcessingException {
  ObjectMapper mapper = new ObjectMapper();
  log.info(mapper.writerWithDefaultPrettyPrinter().writeValueAsString(object));    
}

biniama

1. Make sure Spring Boot is installed
`sdk install springboot`
`spring --version`
2. Run
`spring run app.groovy`

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In scope and intent

Adapter - intent is to mix an interface into a class that doesn't currently  implement htat interface.

Decorator - intent is to change the way a method behaves differently for different decorators.

Bridge - intent is to insolate sub-systems so you can swap out sub-systems without impacting the code that is using that sub-systems.
  The point of a Bridge is to isolate two subsystems so that they can be independently modified. Bridges are big things, often comprised of other patterns (like Adapters and Decorators). This segment looks at how to implement a Bridge and discusses the differences between Bridge and similar patterns like Adapter.
  E.g. JDBC (bad implementation of Bridge since swapping doesn't work as it should)
  Best example: ORM systems like Hibernate.

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class Singelton {
  static Singleton instance = null;
  
  //private constructor
  private Singelton() {}
  
  public static Singleton getInstance() {
    if(instance == null) 
       instance = new Singleton();
    return instance;

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import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class PhonePadExercise {

    public static void main(String[] args) {

        Integer selectedDigit = 4;

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/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
 
/* 
	Define an array and insert element to an array

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public class HelloWorld {
    public static void main(String [] args) {
        System.out.println("Hello, Ese and Haile!");
    }
}

//public - accessible from anywhere
//static - only a single instance while executing
//void - does not return anything
//Function(method) = input -> processing -> output

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Swagger Setup for Embedded Jetty Server

In setting up a Jetty server with Jersey servlets, you may choose to use an embedded Jetty server setup. (See here for how to setup an embedded Jetty server). In this gist, we'll go through how to setup Swagger for this setup. I am using Swagger 1.5, Maven 3.3.3, Jersey 1.8, and Jetty 7.3. Make sure you add all dependencies to your pom.xml.

In the Swagger Core setup, the current official recommendations involve an Application class, or a web.xml, neither of which are used in an embedded Jetty server setup. To add Swagger to your embedded Jetty Server, you must do 3 things:

1. Add the package scanning packages to your servlets which will serve your REST API.
2. Add the Swagger package scanning servlet.
3. P