1.18.1

.gitignore

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+# Operating System Files
+
+*.DS_Store
+Thumbs.db
+*.sw?
+.#*
+*#
+*~
+*.sublime-*
+
+# Build Artifacts
+
+.gradle/
+build/
+target/
+bin/
+out/
+dependency-reduced-pom.xml
+
+# Eclipse Project Files
+
+.classpath
+.project
+.metadata
+.loadpath
+bin/
+.settings/
+
+# IntelliJ IDEA Files
+
+*.iml
+*.ipr
+*.iws
+*.idea
+
+.vscode/
+README.html
+

README.md

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+# Core Spring and Spring Boot Lab Projects
+
+Labs for the Core Spring and Spring Boot courses
+
+To import these labs into your IDE, import the parent pom `lab/pom.xml` as Maven projects or `lab/build.gradle` as Gradle projects.

lab/.mvn/wrapper/MavenWrapperDownloader.java

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+/*
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+*/
+
+import java.net.*;
+import java.io.*;
+import java.nio.channels.*;
+import java.util.Properties;
+
+public class MavenWrapperDownloader {
+
+    /**
+     * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
+     */
+    private static final String DEFAULT_DOWNLOAD_URL =
+            "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.4.2/maven-wrapper-0.4.2.jar";
+
+    /**
+     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
+     * use instead of the default one.
+     */
+    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
+            ".mvn/wrapper/maven-wrapper.properties";
+
+    /**
+     * Path where the maven-wrapper.jar will be saved to.
+     */
+    private static final String MAVEN_WRAPPER_JAR_PATH =
+            ".mvn/wrapper/maven-wrapper.jar";
+
+    /**
+     * Name of the property which should be used to override the default download url for the wrapper.
+     */
+    private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
+
+    public static void main(String args[]) {
+        System.out.println("- Downloader started");
+        File baseDirectory = new File(args[0]);
+        System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
+
+        // If the maven-wrapper.properties exists, read it and check if it contains a custom
+        // wrapperUrl parameter.
+        File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
+        String url = DEFAULT_DOWNLOAD_URL;
+        if(mavenWrapperPropertyFile.exists()) {
+            FileInputStream mavenWrapperPropertyFileInputStream = null;
+            try {
+                mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
+                Properties mavenWrapperProperties = new Properties();
+                mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
+                url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
+            } catch (IOException e) {
+                System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
+            } finally {
+                try {
+                    if(mavenWrapperPropertyFileInputStream != null) {
+                        mavenWrapperPropertyFileInputStream.close();
+                    }
+                } catch (IOException e) {
+                    // Ignore ...
+                }
+            }
+        }
+        System.out.println("- Downloading from: : " + url);
+
+        File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
+        if(!outputFile.getParentFile().exists()) {
+            if(!outputFile.getParentFile().mkdirs()) {
+                System.out.println(
+                        "- ERROR creating output direcrory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+            }
+        }
+        System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
+        try {
+            downloadFileFromURL(url, outputFile);
+            System.out.println("Done");
+            System.exit(0);
+        } catch (Throwable e) {
+            System.out.println("- Error downloading");
+            e.printStackTrace();
+            System.exit(1);
+        }
+    }
+
+    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+        URL website = new URL(urlString);
+        ReadableByteChannel rbc;
+        rbc = Channels.newChannel(website.openStream());
+        FileOutputStream fos = new FileOutputStream(destination);
+        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+        fos.close();
+        rbc.close();
+    }
+
+}

lab/.mvn/wrapper/maven-wrapper.properties

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+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.6/apache-maven-3.8.6-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar

lab/00-rewards-common/build.gradle

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+apply plugin: 'java-library'
+
+dependencies {
+    api "org.hibernate:hibernate-entitymanager"
+    api "com.fasterxml.jackson.core:jackson-annotations"
+}

lab/00-rewards-common/pom.xml

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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<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/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>00-rewards-common</artifactId>
+    <organization>
+        <name>Spring Training</name>
+        <url>https://spring.io/training</url>
+    </organization>
+    <packaging>jar</packaging>
+    <parent>
+        <groupId>io.spring.training.core-spring</groupId>
+        <artifactId>parentProject</artifactId>
+        <version>5.3.23</version>
+    </parent>
+    <dependencies>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-entitymanager</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-annotations</artifactId>
+        </dependency>
+    </dependencies>
+</project>

lab/00-rewards-common/src/main/java/common/datetime/DateInterval.java

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+package common.datetime;
+
+public class DateInterval {
+
+	private SimpleDate start;
+
+	private SimpleDate end;
+
+	public DateInterval(SimpleDate start, SimpleDate end) {
+		this.start = start;
+		this.end = end;
+	}
+
+	public SimpleDate getStart() {
+		return start;
+	}
+
+	public SimpleDate getEnd() {
+		return end;
+	}
+}

lab/00-rewards-common/src/main/java/common/datetime/SimpleDate.java

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+package common.datetime;
+
+import java.io.Serializable;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.GregorianCalendar;
+import java.text.SimpleDateFormat;
+
+/**
+ * A simple wrapper around a calendar for working with dates like 12/29/1977. Does not consider time.
+ */
+public class SimpleDate implements Serializable {
+
+	private static final long serialVersionUID = 2285962420279644602L;
+
+	private GregorianCalendar base;
+
+	/**
+	 * Create a new simple date.
+	 * @param month the month
+	 * @param day the day
+	 * @param year the year
+	 */
+	public SimpleDate(int month, int day, int year) {
+		init(new GregorianCalendar(year, month - 1, day));
+	}
+
+	SimpleDate(long time) {
+		GregorianCalendar cal = new GregorianCalendar();
+		cal.setTimeInMillis(time);
+		init(cal);
+	}
+
+	private SimpleDate() {
+		init(new GregorianCalendar());
+	}
+
+	private void init(GregorianCalendar cal) {
+		this.base = trimToDays(cal);
+	}
+
+	private GregorianCalendar trimToDays(GregorianCalendar cal) {
+		cal.set(Calendar.HOUR_OF_DAY, 0);
+		cal.set(Calendar.MINUTE, 0);
+		cal.set(Calendar.SECOND, 0);
+		cal.set(Calendar.MILLISECOND, 0);
+		return cal;
+	}
+
+	/**
+	 * Returns this simple date as a <code>java.util.Date</code>
+	 * @return this simple date as a Date
+	 */
+	public Date asDate() {
+		return base.getTime();
+	}
+
+	/**
+	 * Returns this date in milliseconds since 1970.
+	 * @return
+	 */
+	public long inMilliseconds() {
+		return asDate().getTime();
+	}
+
+	public int compareTo(Object date) {
+		SimpleDate other = (SimpleDate) date;
+		return asDate().compareTo(other.asDate());
+	}
+
+	public boolean equals(Object day) {
+		if (!(day instanceof SimpleDate)) {
+			return false;
+		}
+		SimpleDate other = (SimpleDate) day;
+		return (base.equals(other.base));
+	}
+
+	public int hashCode() {
+		return 29 * base.hashCode();
+	}
+
+	/**
+	 * Returns todays date. A convenient static factory method.
+	 */
+	public static SimpleDate today() {
+		return new SimpleDate();
+	}
+
+	/**
+	 * Converts the specified date to a SimpleDate. Will trim hour, minute, second, and millisecond fields.
+	 * @param date the java.util.Date
+	 * @return the simple date
+	 */
+	public static SimpleDate valueOf(Date date) {
+		return valueOf(date.getTime());
+	}
+
+	/**
+	 * Converts the specified long time value to a SimpleDate. Will trim hour, minute, second, and millisecond fields.
+	 * @param time time in millseconds since 1970
+	 * @return the time as a SimpleDate
+	 */
+	public static SimpleDate valueOf(long time) {
+		return new SimpleDate(time);
+	}
+
+	@Override
+	public String toString() {
+        return new SimpleDateFormat().format(base.getTime());
+    }
+
+}

lab/00-rewards-common/src/main/java/common/datetime/SimpleDateEditor.java

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+package common.datetime;
+
+import java.beans.PropertyEditorSupport;
+import java.text.DateFormat;
+import java.text.ParseException;
+import java.util.Locale;
+
+/**
+ * A formatter for Simple date properties. Converts object values to well-formatted strings and strings back to
+ * values. Usable by a data binding framework for binding user input to the model.
+ */
+public class SimpleDateEditor extends PropertyEditorSupport {
+
+	private DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.LONG, Locale.ENGLISH);
+
+	@Override
+	public String getAsText() {
+		SimpleDate date = (SimpleDate) getValue();
+		if (date == null) {
+			return "";
+		} else {
+			return dateFormat.format(date.asDate());
+		}
+	}
+
+	@Override
+	public void setAsText(String text) throws IllegalArgumentException {
+		try {
+			setValue(SimpleDate.valueOf(dateFormat.parse(text)));
+		} catch (ParseException e) {
+			throw new IllegalArgumentException("Unable to convert String '" + text + "' to a SimpleDate", e);
+		}
+	}
+}

lab/00-rewards-common/src/main/java/common/datetime/package.html

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+<html>
+<body>
+<p>
+Shared classes for representing date and time.
+</p>
+</body>
+</html>