maartenl

@Test
  public void testSortUnsortedStream() {
    Person kenThompson = new Person("Ken", "Thompson");
    Person edgerDijkstra = new Person("Edger", "Dijkstra");
    Person simonThompson = new Person("Simon", "Thompson");
    Set<Person> people = Set.of(
        edgerDijkstra,
        kenThompson,
        simonThompson
    );

maartenl

package com.mrbear.parameters;

import org.testng.annotations.Test;

import static org.assertj.core.api.Assertions.assertThat;

/**
 * Parameters in Java are call-by-value. Which means you cannot replace a parameter of a method with another object.
 * Sure, you can replace the <i>content/state</i> of an object, but it will remain the same object.
 * So, java is call-by-value, and object references provided in parameters are thus <i>also</i> call-by-value.

maartenl

  @Test
  public void testStreamMax() {
    Optional<Item> foundItem = items.stream()
        .min(Comparator.comparing(Item::getPrice));
    assertThat(foundItem).contains(items.get(4));
  }

maartenl

  @Test
  public void testForEachLoopMax() {
    Optional<Item> foundItem = Optional.empty();
    for (Item item: items) {
      if (foundItem.isEmpty() || 
          foundItem.get().getPrice().isGreaterThan(item.getPrice())) {
        foundItem = Optional.of(item);
      }
    }
    assertThat(foundItem).contains(items.get(4));

maartenl

  public class Item {
    private final String name;
    private final MonetaryAmount price;

    private Item(String name, MonetaryAmount price) {
      this.name = name;
      this.price = price;
    }

    public MonetaryAmount getPrice() {

maartenl

[INFO] mrbear:portal:war:2.0.11-SNAPSHOT
[INFO] +- mrbear:portalentities:jar:1.0.7-SNAPSHOT:compile
[INFO] |  +- javax.xml.bind:jaxb-api:jar:2.3.0:compile
[INFO] |  +- com.googlecode.owasp-java-html-sanitizer:owasp-java-html-sanitizer:jar:20180219.1:compile
[INFO] |  \- commons-validator:commons-validator:jar:1.4.0:compile
[INFO] |     +- commons-beanutils:commons-beanutils:jar:1.8.3:compile
[INFO] |     +- commons-digester:commons-digester:jar:1.8:compile
[INFO] |     \- commons-logging:commons-logging:jar:1.1.1:compile
[INFO] +- org.eclipse.microprofile:microprofile:pom:2.2:provided
[INFO] |  +- javax.enterprise:cdi-api:jar:2.0:provided

maartenl

#!/bin/bash

timevar=`date +%Y-%m-%d_%H.%M.%S` 
process_name='java'

echo "$timevar Renew certificates" >> /home/jelastic/crontabs/log.txt
certbot renew
cd /home/jelastic
echo "$timevar Import new certificates" >> /home/jelastic/crontabs/log.txt
./letsencrypt_certificate.sh

maartenl

# Example of job definition:
# .---------------- minute (0 - 59)
# |  .------------- hour (0 - 23)
# |  |  .---------- day of month (1 - 31)
# |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...
# |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat
# |  |  |  |  |
# *  *  *  *  * user-name  command to be executed

0 0 14 03 * /home/jelastic/crontabs/certificate_renew.sh

maartenl

@startuml

' hide the spot
hide circle

' avoid problems with angled crows feet
skinparam linetype ortho

entity "Guild" as Guild {
  *guildnr : number <<generated>>

maartenl

    /**
     * use "?.let" to create a lambda in which we're sure there's no problem.
     * Is a very nice solution, if possible.
     */
    @Test
    fun mutablePropertyCouldHaveChanged4() {
        name?.let { assertThat(it.length).isNotZero() }
    }