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‎JGit/pom.xml

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@@ -3,10 +3,11 @@
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.baeldung</groupId>
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<artifactId>JGitSnippets</artifactId>
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<artifactId>JGit</artifactId>
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<version>1.0-SNAPSHOT</version>
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<packaging>jar</packaging>
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<url>http://maven.apache.org</url>
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<name>JGit</name>
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<parent>
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<groupId>com.baeldung</groupId>

‎README.md

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The "REST with Spring" Classes
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==============================
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5-
After 5 months of work, here's the Master Class of REST With Spring: <br/>
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Here's the Master Class of REST With Spring (price changes permanently next Friday): <br/>
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**[>> THE REST WITH SPRING MASTER CLASS](http://www.baeldung.com/rest-with-spring-course?utm_source=github&utm_medium=social&utm_content=tutorials&utm_campaign=rws#master-class)**
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And here's the Master Class of Learn Spring Security: <br/>

‎algorithms/src/main/java/com/baeldung/algorithms/distancebetweenpoints/DistanceBetweenPointsService.java

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package com.baeldung.algorithms.distancebetweenpoints;
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import java.awt.geom.Point2D;
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public class DistanceBetweenPointsService {
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public double calculateDistanceBetweenPoints(
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double x1,
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double y1,
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double x2,
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double y2) {
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return Math.sqrt((y2 - y1) * (y2 - y1) + (x2 - x1) * (x2 - x1));
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}
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public double calculateDistanceBetweenPointsWithHypot(
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double x1,
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double y1,
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double x2,
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double y2) {
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double ac = Math.abs(y2 - y1);
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double cb = Math.abs(x2 - x1);
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return Math.hypot(ac, cb);
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}
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public double calculateDistanceBetweenPointsWithPoint2D(
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double x1,
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double y1,
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double x2,
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double y2) {
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return Point2D.distance(x1, y1, x2, y2);
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}
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}

‎algorithms/src/main/java/com/baeldung/algorithms/linesintersection/LinesIntersectionService.java

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package com.baeldung.algorithms.linesintersection;
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import java.awt.Point;
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import java.util.Optional;
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public class LinesIntersectionService {
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public Optional<Point> calculateIntersectionPoint(double m1, double b1, double m2, double b2) {
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if (m1 == m2) {
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return Optional.empty();
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}
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double x = (b2 - b1) / (m1 - m2);
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double y = m1 * x + b1;
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Point point = new Point();
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point.setLocation(x, y);
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return Optional.of(point);
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}
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}

‎algorithms/src/test/java/com/baeldung/algorithms/distancebetweenpoints/DistanceBetweenPointsServiceUnitTest.java

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package com.baeldung.algorithms.distancebetweenpoints;
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import org.junit.Test;
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import com.baeldung.algorithms.distancebetweenpoints.DistanceBetweenPointsService;
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import static org.junit.Assert.assertEquals;
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public class DistanceBetweenPointsServiceUnitTest {
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private DistanceBetweenPointsService service = new DistanceBetweenPointsService();
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@Test
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public void givenTwoPoints_whenCalculateDistanceByFormula_thenCorrect() {
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double x1 = 3;
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double y1 = 4;
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double x2 = 7;
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double y2 = 1;
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double distance = service.calculateDistanceBetweenPoints(x1, y1, x2, y2);
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assertEquals(distance, 5, 0.001);
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}
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@Test
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public void givenTwoPoints_whenCalculateDistanceWithHypot_thenCorrect() {
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double x1 = 3;
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double y1 = 4;
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double x2 = 7;
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double y2 = 1;
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double distance = service.calculateDistanceBetweenPointsWithHypot(x1, y1, x2, y2);
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assertEquals(distance, 5, 0.001);
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}
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@Test
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public void givenTwoPoints_whenCalculateDistanceWithPoint2D_thenCorrect() {
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double x1 = 3;
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double y1 = 4;
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double x2 = 7;
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double y2 = 1;
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double distance = service.calculateDistanceBetweenPointsWithPoint2D(x1, y1, x2, y2);
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assertEquals(distance, 5, 0.001);
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}
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}

‎algorithms/src/test/java/com/baeldung/algorithms/linesintersection/LinesIntersectionServiceUnitTest.java

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package com.baeldung.algorithms.linesintersection;
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import java.awt.Point;
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import java.util.Optional;
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import org.junit.Test;
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import static org.junit.Assert.assertTrue;
8+
import static org.junit.Assert.assertFalse;
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import static org.junit.Assert.assertEquals;
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public class LinesIntersectionServiceUnitTest {
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private LinesIntersectionService service = new LinesIntersectionService();
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@Test
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public void givenNotParallelLines_whenCalculatePoint_thenPresent() {
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double m1 = 0;
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double b1 = 0;
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double m2 = 1;
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double b2 = -1;
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Optional<Point> point = service.calculateIntersectionPoint(m1, b1, m2, b2);
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assertTrue(point.isPresent());
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assertEquals(point.get().getX(), 1, 0.001);
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assertEquals(point.get().getY(), 0, 0.001);
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}
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@Test
30+
public void givenParallelLines_whenCalculatePoint_thenEmpty() {
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double m1 = 1;
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double b1 = 0;
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double m2 = 1;
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double b2 = -1;
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Optional<Point> point = service.calculateIntersectionPoint(m1, b1, m2, b2);
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assertFalse(point.isPresent());
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}
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}

‎apache-avro/pom.xml

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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
55
<modelVersion>4.0.0</modelVersion>
66
<groupId>com.baeldung</groupId>
7-
<artifactId>apache-avro-tutorial</artifactId>
7+
<artifactId>apache-avro</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<name>Apache Avro</version>
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1011
<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

‎apache-cxf/sse-jaxrs/sse-jaxrs-server/pom.xml

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</properties>
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<build>
23-
<finalName>${artifactId}</finalName>
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<finalName>${project.artifactId}</finalName>
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<plugins>
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<plugin>
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<groupId>net.wasdev.wlp.maven.plugins</groupId>

‎aws/.gitignore

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/target/
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.idea/

‎aws/src/main/java/com/baeldung/rds/AWSRDSService.java

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package com.baeldung.rds;
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import com.amazonaws.auth.AWSCredentialsProvider;
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import com.amazonaws.auth.AWSStaticCredentialsProvider;
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import com.amazonaws.auth.BasicAWSCredentials;
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import com.amazonaws.regions.Regions;
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import com.amazonaws.services.rds.AmazonRDS;
8+
import com.amazonaws.services.rds.AmazonRDSClientBuilder;
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import com.amazonaws.services.rds.model.*;
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import java.io.IOException;
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import java.io.InputStream;
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import java.sql.*;
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import java.util.List;
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import java.util.Properties;
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import java.util.UUID;
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import java.util.logging.Logger;
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public class AWSRDSService {
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final static Logger logger = Logger.getLogger(AWSRDSService.class.getName());
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private AWSCredentialsProvider credentials;
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private AmazonRDS amazonRDS;
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private String db_username;
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private String db_password;
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private String db_database;
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private String db_hostname;
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/*
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* User access key and secret key must be set before execute any operation.
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* Follow the link on how to get the user access and secret key
33+
* https://aws.amazon.com/blogs/security/wheres-my-secret-access-key/
34+
* **/
35+
public AWSRDSService() throws IOException {
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//Init RDS client with credentials and region.
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credentials = new
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AWSStaticCredentialsProvider(new
39+
BasicAWSCredentials("<ACCESS_KEY>",
40+
"<SECRET_KEY>"));
41+
amazonRDS = AmazonRDSClientBuilder.standard().withCredentials(credentials)
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.withRegion(Regions.AP_SOUTHEAST_2).build();
43+
Properties prop = new Properties();
44+
InputStream input = AWSRDSService.class.getClassLoader().getResourceAsStream("db.properties");
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prop.load(input);
46+
db_username = prop.getProperty("db_username");
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db_password = prop.getProperty("db_password");
48+
db_database = prop.getProperty("db_database");
49+
}
50+
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public AWSRDSService(AmazonRDS amazonRDS){
52+
this.amazonRDS = amazonRDS;
53+
}
54+
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/**
56+
* create the RDS instance.
57+
* After instance creation, update the db_hostname with endpoint in db.properties.
58+
* */
59+
60+
public String launchInstance() {
61+
62+
String identifier = "";
63+
CreateDBInstanceRequest request = new CreateDBInstanceRequest();
64+
// RDS instance name
65+
request.setDBInstanceIdentifier("Sydney");
66+
request.setEngine("postgres");
67+
request.setMultiAZ(false);
68+
request.setMasterUsername(db_username);
69+
request.setMasterUserPassword(db_password);
70+
request.setDBName(db_database);
71+
request.setStorageType("gp2");
72+
request.setAllocatedStorage(10);
73+
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DBInstance instance = amazonRDS.createDBInstance(request);
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// Information about the new RDS instance
77+
identifier = instance.getDBInstanceIdentifier();
78+
String status = instance.getDBInstanceStatus();
79+
Endpoint endpoint = instance.getEndpoint();
80+
String endpoint_url = "Endpoint URL not available yet.";
81+
if (endpoint != null) {
82+
endpoint_url = endpoint.toString();
83+
}
84+
logger.info(identifier + "\t" + status);
85+
logger.info(endpoint_url);
86+
87+
return identifier;
88+
89+
}
90+
91+
// Describe DB instances
92+
public void listInstances() {
93+
DescribeDBInstancesResult result = amazonRDS.describeDBInstances();
94+
List<DBInstance> instances = result.getDBInstances();
95+
for (DBInstance instance : instances) {
96+
// Information about each RDS instance
97+
String identifier = instance.getDBInstanceIdentifier();
98+
String engine = instance.getEngine();
99+
String status = instance.getDBInstanceStatus();
100+
Endpoint endpoint = instance.getEndpoint();
101+
String endpoint_url = "Endpoint URL not available yet.";
102+
if (endpoint != null) {
103+
endpoint_url = endpoint.toString();
104+
}
105+
logger.info(identifier + "\t" + engine + "\t" + status);
106+
logger.info("\t" + endpoint_url);
107+
}
108+
109+
}
110+
111+
//Delete RDS instance
112+
public void terminateInstance(String identifier) {
113+
114+
DeleteDBInstanceRequest request = new DeleteDBInstanceRequest();
115+
request.setDBInstanceIdentifier(identifier);
116+
request.setSkipFinalSnapshot(true);
117+
118+
// Delete the RDS instance
119+
DBInstance instance = amazonRDS.deleteDBInstance(request);
120+
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// Information about the RDS instance being deleted
122+
String status = instance.getDBInstanceStatus();
123+
Endpoint endpoint = instance.getEndpoint();
124+
String endpoint_url = "Endpoint URL not available yet.";
125+
if (endpoint != null) {
126+
endpoint_url = endpoint.toString();
127+
}
128+
129+
logger.info(identifier + "\t" + status);
130+
logger.info(endpoint_url);
131+
132+
}
133+
134+
135+
public void runJdbcTests() throws SQLException, IOException {
136+
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// Getting database properties from db.properties
138+
Properties prop = new Properties();
139+
InputStream input = AWSRDSService.class.getClassLoader().getResourceAsStream("db.properties");
140+
prop.load(input);
141+
db_hostname = prop.getProperty("db_hostname");
142+
String jdbc_url = "jdbc:postgresql://" + db_hostname + ":5432/" + db_database;
143+
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// Create a connection using the JDBC driver
145+
try (Connection conn = DriverManager.getConnection(jdbc_url, db_username, db_password)) {
146+
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// Create the test table if not exists
148+
Statement statement = conn.createStatement();
149+
String sql = "CREATE TABLE IF NOT EXISTS jdbc_test (id SERIAL PRIMARY KEY, content VARCHAR(80))";
150+
statement.executeUpdate(sql);
151+
152+
// Do some INSERT
153+
PreparedStatement preparedStatement = conn.prepareStatement("INSERT INTO jdbc_test (content) VALUES (?)");
154+
String content = "" + UUID.randomUUID();
155+
preparedStatement.setString(1, content);
156+
preparedStatement.executeUpdate();
157+
logger.info("INSERT: " + content);
158+
159+
// Do some SELECT
160+
sql = "SELECT * FROM jdbc_test";
161+
ResultSet resultSet = statement.executeQuery(sql);
162+
while (resultSet.next()) {
163+
String count = resultSet.getString("content");
164+
logger.info("Total Records: " + count);
165+
}
166+
}
167+
168+
169+
}
170+
171+
public static void main(String[] args) throws IOException, SQLException {
172+
AWSRDSService awsrdsService = new AWSRDSService();
173+
174+
String instanceName = awsrdsService.launchInstance();
175+
176+
//Add some wait for instance creation.
177+
178+
awsrdsService.listInstances();
179+
180+
awsrdsService.runJdbcTests();
181+
182+
awsrdsService.terminateInstance(instanceName);
183+
}
184+
}

‎aws/src/main/resources/db.properties

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db_hostname=<RDS EndPoint>
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db_username=username
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db_password=password
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db_database=mydb

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