Merge branch 'eugenp:master' into master

core-java-modules/core-java-11-2/src/main/java/com/baeldung/httpclient/basicauthentication/HttpClientBasicAuthentication.java

@@ -0,0 +1,67 @@
+package com.baeldung.httpclient.basicauthentication;
+
+import java.io.IOException;
+import java.net.Authenticator;
+import java.net.PasswordAuthentication;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.net.http.HttpResponse.BodyHandlers;
+import java.util.Base64;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class HttpClientBasicAuthentication {
+
+    private static final Logger logger = LoggerFactory.getLogger(HttpClientBasicAuthentication.class);
+
+    public static void main(String[] args) throws URISyntaxException, IOException, InterruptedException {
+        useClientWithAuthenticator();
+        useClientWithHeaders();
+    }
+
+    private static void useClientWithAuthenticator() throws URISyntaxException, IOException, InterruptedException {
+        HttpClient client = HttpClient.newBuilder()
+            .authenticator(new Authenticator() {
+                @Override
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication("postman", "password".toCharArray());
+                }
+            })
+            .build();
+
+        HttpRequest request = HttpRequest.newBuilder()
+            .GET()
+            .uri(new URI("https://postman-echo.com/basic-auth"))
+            .build();
+
+        HttpResponse<String> response = client.send(request, BodyHandlers.ofString());
+
+        logger.info("Status using authenticator {}", response.statusCode());
+    }
+
+    private static void useClientWithHeaders() throws IOException, InterruptedException, URISyntaxException {
+        HttpClient client = HttpClient.newBuilder()
+            .build();
+
+        HttpRequest request = HttpRequest.newBuilder()
+            .GET()
+            .uri(new URI("https://postman-echo.com/basic-auth"))
+            .header("Authorization", getBasicAuthenticationHeader("postman", "password"))
+            .build();
+
+        HttpResponse<String> response = client.send(request, BodyHandlers.ofString());
+
+        logger.info("Status using headers: {}", response.statusCode());
+    }
+
+    private static final String getBasicAuthenticationHeader(String username, String password) {
+        String valueToEncode = username + ":" + password;
+        return "Basic " + Base64.getEncoder()
+            .encodeToString(valueToEncode.getBytes());
+    }
+
+}

core-java-modules/core-java-collections-list-3/README.md

@@ -11,4 +11,5 @@ This module contains articles about the Java List collection
 - [Filtering a Java Collection by a List](https://www.baeldung.com/java-filter-collection-by-list)
 - [How to Count Duplicate Elements in Arraylist](https://www.baeldung.com/java-count-duplicate-elements-arraylist)
 - [Finding the Differences Between Two Lists in Java](https://www.baeldung.com/java-lists-difference)
+- [List vs. ArrayList in Java](https://www.baeldung.com/java-list-vs-arraylist)
 - [[<-- Prev]](/core-java-modules/core-java-collections-list-2)

core-java-modules/core-java-date-operations-2/src/test/java/com/baeldung/subtractdays/SubtractDaysFromDateUnitTest.java

@@ -4,6 +4,7 @@ import static org.junit.Assert.assertEquals;
 
 import java.text.SimpleDateFormat;
 import java.time.LocalDate;
+import java.time.LocalDateTime;
 import java.util.Calendar;
 import java.util.Date;
 import java.util.GregorianCalendar;
@@ -15,7 +16,7 @@ public class SubtractDaysFromDateUnitTest {
 
     @Test
     public void givenLocalDateTime_whenSubtractingFiveDays_dateIsChangedCorrectly() {
-        LocalDate localDateTime = LocalDate.of(2022, 4, 20);
+        LocalDateTime localDateTime = LocalDateTime.of(2022, 4, 20, 0, 0);
 
         localDateTime = localDateTime.minusDays(5);
 

core-java-modules/core-java-lang-4/README.md

@@ -11,3 +11,4 @@ This module contains articles about core features in the Java language
 - [Fixing the “Declared package does not match the expected package” Error](https://www.baeldung.com/java-declared-expected-package-error)
 - [Chaining Constructors in Java](https://www.baeldung.com/java-chain-constructors)
 - [Difference Between POJO, JavaBeans, DTO and VO](https://www.baeldung.com/java-pojo-javabeans-dto-vo)
+- [Implements vs. Extends in Java](https://www.baeldung.com/java-implements-vs-extends)

jackson-modules/jackson-annotations/README.md

@@ -7,3 +7,4 @@ This module contains articles about Jackson annotations.
 - [More Jackson Annotations](https://www.baeldung.com/jackson-advanced-annotations)
 - [Jackson – Bidirectional Relationships](https://www.baeldung.com/jackson-bidirectional-relationships-and-infinite-recursion)
 - [Jackson JSON Views](https://www.baeldung.com/jackson-json-view-annotation)
+- [Deduction-Based Polymorphism in Jackson 2.12](https://www.baeldung.com/jackson-deduction-based-polymorphism)

java-numbers-4/README.md

@@ -6,3 +6,4 @@
 - [Guide to Java BigInteger](https://www.baeldung.com/java-biginteger)
 - [Automorphic Numbers in Java](https://www.baeldung.com/java-automorphic-numbers)
 - [Convert Byte Size Into a Human-Readable Format in Java](https://www.baeldung.com/java-human-readable-byte-size)
+- [Convert boolean to int in Java](https://www.baeldung.com/java-boolean-to-int)

persistence-modules/hibernate-exceptions/README.md

@@ -5,3 +5,4 @@
 - [TransactionRequiredException Error](https://www.baeldung.com/jpa-transaction-required-exception)
 - [Hibernate’s “Object References an Unsaved Transient Instance” Error](https://www.baeldung.com/hibernate-unsaved-transient-instance-error)
 - [EntityNotFoundException in Hibernate](https://www.baeldung.com/hibernate-entitynotfoundexception)
+- [Hibernate’s “Not-Null Property References a Null or Transient Value” Error](https://www.baeldung.com/hibernate-not-null-error)

persistence-modules/java-mongodb-2/src/main/java/com/baeldung/mongo/ConnectionCheck.java

@@ -7,7 +7,7 @@ import com.mongodb.ServerAddress;
 
 public class ConnectionCheck {
 
-    public static void checkingConnection() {
+    public static MongoClient checkingConnection() {
 
         MongoClientOptions.Builder builder = MongoClientOptions.builder();
 
@@ -27,9 +27,10 @@ public class ConnectionCheck {
             System.out.println(db.getStats());
         } catch (Exception e) {
             System.out.println("MongoDB Server is Down");
-            mongoClient.close();
         }
 
+        return mongoClient;
+
     }
 
     public static void main(String[] args) {
@@ -43,4 +44,3 @@ public class ConnectionCheck {
     }
 
 }
-

persistence-modules/java-mongodb-2/src/test/java/com/baeldung/mongo/ConnectionCheckLiveTest.java

@@ -3,45 +3,22 @@ package com.baeldung.mongo;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
 
-import java.io.IOException;
-
-import org.junit.BeforeClass;
 import org.junit.Test;
 
+import com.baeldung.ConnectionCheck;
 import com.mongodb.MongoClient;
-import com.mongodb.MongoClientOptions;
-import com.mongodb.ServerAddress;
 
 public class ConnectionCheckLiveTest {
 
-    private static MongoClient mongoClient;
+    ConnectionCheck ConnectionCheck = new ConnectionCheck();
-    private static MongoClientOptions.Builder builder;
-    private static ServerAddress ServerAddress;
-
-    @BeforeClass
-    public static void setup() throws IOException {
-        if (mongoClient == null) {
-
-            builder = MongoClientOptions.builder();
-            builder.connectionsPerHost(100);
-            builder.maxWaitTime(60000);
-            builder.connectTimeout(1500);
-            builder.socketTimeout(60000);
-            builder.socketKeepAlive(true);
-
-            ServerAddress = new ServerAddress("localhost", 27017);
-            mongoClient = new MongoClient(ServerAddress, builder.build());
-
-        }
-    }
 
     @Test
     public void givenMongoClient_whenConnectionCheck_thenCheckingForConnectionPoint() {
 
+        MongoClient mongoClient = ConnectionCheck.checkingConnection();
         String connectionPoint = mongoClient.getConnectPoint();
         assertNotNull(connectionPoint);
         assertFalse(connectionPoint.isEmpty());
 
     }
 }
-

spring-boot-modules/spring-boot-properties-migrator-demo/README.md

@@ -0,0 +1,3 @@
+
+### Relevant Articles:
+- [Spring Boot Configuration Properties Migrator](https://www.baeldung.com/spring-boot-properties-migrator)

spring-cloud/spring-cloud-eureka/README.md

@@ -1,3 +1,4 @@
 ### Relevant Articles:
 - [Introduction to Spring Cloud Netflix – Eureka](http://www.baeldung.com/spring-cloud-netflix-eureka)
 - [Integration Tests With Spring Cloud Netflix and Feign](https://www.baeldung.com/spring-cloud-feign-integration-tests)
+- [Spring Cloud – Disable Discovery Clients with Profiles](https://www.baeldung.com/spring-cloud-disable-discovery-clients)