initial commit

.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/maven-wrapper.properties

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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.
+wrapperVersion=3.3.2
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.6/apache-maven-3.9.6-bin.zip

lab/00-rewards-common/build.gradle

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+apply plugin: 'java-library'
+
+dependencies {
+    api "org.hibernate.orm:hibernate-core"
+    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>3.3.1</version>
+    </parent>
+    <dependencies>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-annotations</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate.orm</groupId>
+            <artifactId>hibernate-core</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 other)) {
+			return false;
+		}
+		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 final 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>