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install jre

$ brew tap caskroom/versions

$ brew cask install java8

create directory

$ mkdir ~/workshop/

$ cd ~/workshop/

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import java.util.Properties
import org.apache.http.HttpHost

import com.fasterxml.jackson.databind.JsonNode
import org.apache.kafka.clients.consumer.ConsumerConfig
import org.apache.kafka.clients.consumer.KafkaConsumer
import org.apache.kafka.common.serialization.StringDeserializer
import org.apache.kafka.connect.json.JsonDeserializer
import org.elasticsearch.ElasticsearchException

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buildscript {
    ext.kotlin_version = '1.2.50'

    repositories {
        mavenCentral()
    }

    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }

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package main

import (
	"log"
	"os"
	"fmt"
	"net/http"
	"encoding/json"
	
	"github.com/joho/godotenv"

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package producer

import (
	"fmt"
	"os"

	"github.com/confluentinc/confluent-kafka-go/kafka"
)

var producer *kafka.Producer

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CHANNEL_SECRET=your_channel_secret
CHANNEL_ACCESS_TOKEN=your_channel_access_token
# BOOTSTRAP_SERVERS=localhost:9092

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package main

import (
	"log"
	"os"
	"net/http"
	
	"github.com/joho/godotenv"
	"github.com/labstack/echo"
	"github.com/line/line-bot-sdk-go/linebot"

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success: function (res, status) {
      liff.getProfile()
      .catch(function (error) {
        window.alert('Error message from getProfile: ' + error.message);
      }.then(function (profile) {
        liff.sendMessages([
          {
            type: 'image',
            originalContentUrl: 'https://' + document.domain + '/static/imgs/' + res + '.jpg',
            previewImageUrl: 'https://' + document.domain + '/static/imgs/' + res + '_240.jpg'

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class Obj {
  var v1
  
  def doSomething() {
    [1,2,3].forEach(i => {
       this.v1 = i
       this.v2 = random()
       this.validate_with_instance_variable() // (1)
       this.validate_with_passing_variable(i, this.v2) // (2)
    })

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<!-- main pom.xml -->
<?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>group1</groupId>
    <artifactId>multipleprojects</artifactId>
    <version>1.0-SNAPSHOT</version>