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init jts operations implementations
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‎jts/pom.xml

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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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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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<parent>
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<groupId>com.baeldung</groupId>
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<artifactId>parent-modules</artifactId>
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<version>1.0.0-SNAPSHOT</version>
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</parent>
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<groupId>com.baeldung.jts</groupId>
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<artifactId>jst-example</artifactId>
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<version>1.0-SNAPSHOT</version>
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<packaging>jar</packaging>
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<properties>
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<maven.compiler.source>21</maven.compiler.source> <!-- Java version -->
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<maven.compiler.target>21</maven.compiler.target>
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<slf4j.version>2.0.17</slf4j.version>
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<junit.version>4.13.2</junit.version>
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<jts.version>1.20.0</jts.version>
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<qos.logback.version>1.5.18</qos.logback.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.locationtech.jts</groupId>
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<artifactId>jts-core</artifactId>
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<version>${jts.version}</version>
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</dependency>
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-api</artifactId>
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<version>${slf4j.version}</version>
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</dependency>
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<dependency>
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<groupId>ch.qos.logback</groupId>
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<artifactId>logback-core</artifactId>
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<version>${qos.logback.version}</version>
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</dependency>
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<dependency>
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<groupId>ch.qos.logback</groupId>
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<artifactId>logback-classic</artifactId>
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<version>${qos.logback.version}</version>
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</dependency>
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<!-- JUnit for unit testing -->
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>${junit.version}</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<!-- Maven Compiler Plugin -->
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.14.0</version>
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<configuration>
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<source>${maven.compiler.source}</source>
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<target>${maven.compiler.target}</target>
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</configuration>
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</plugin>
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<!-- Maven Shade Plugin for creating an executable JAR -->
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-shade-plugin</artifactId>
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<version>3.2.4</version>
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<executions>
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<execution>
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<phase>package</phase>
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<goals>
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<goal>shade</goal>
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</goals>
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<configuration>
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<transformers>
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<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
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<mainClass>com.baeldung.jts.JtsApplication</mainClass> <!-- Main class -->
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</transformer>
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</transformers>
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</configuration>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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</project>

‎jts/src/main/java/com/baeldung/jts/JtsApplication.java

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package com.baeldung.jts;
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import com.baeldung.jts.utils.GeometryFactoryUtil;
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import org.locationtech.jts.geom.Geometry;
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public class JtsApplication {
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public static void main(String[] args) throws Exception {
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}
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}

‎jts/src/main/java/com/baeldung/jts/operations/JTSOperationUtils.java

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package com.baeldung.jts.operations;
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import org.locationtech.jts.geom.Geometry;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class JTSOperationUtils {
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private static final Logger log = LoggerFactory.getLogger(JTSOperationUtils.class);
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public static boolean isContainment(Geometry point, Geometry polygon) {
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boolean isInside = polygon.contains(point);
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log.info("Is the point inside polygon? {}", isInside);
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return isInside;
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}
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public static boolean checkIntersect(Geometry rectangle1, Geometry rectangle2) {
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boolean intersect = rectangle1.intersects(rectangle2);
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Geometry overlap = rectangle1.intersection(rectangle2);
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log.info("Do both rectangle intersect? {}", intersect);
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log.info("Overlapping Area: {}", overlap);
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return intersect;
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}
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public static Geometry getBuffer(Geometry point, int intBuffer) {
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Geometry buffer = point.buffer(intBuffer);
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log.info("Buffer Geometry: {}", buffer);
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return buffer;
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}
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public static double getDistance(Geometry point1, Geometry point2) {
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double distance = point1.distance(point2);
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log.info("Distance: {}",distance);
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return distance;
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}
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public static Geometry getUnion(Geometry geometry1, Geometry geometry2) {
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Geometry union = geometry1.union(geometry2);
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log.info("Union Result: {}", union);
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return union;
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}
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public static Geometry getDifference(Geometry base, Geometry cut) {
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Geometry result = base.difference(cut);
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log.info("Resulting Geometry: {}", result);
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return result;
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}
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public static Geometry validateAndRepair(Geometry invalidGeo) throws Exception {
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boolean valid = invalidGeo.isValid();
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log.info("Is valid Geometry value? {}", valid);
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Geometry repaired = invalidGeo.buffer(0);
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log.info("Repaired Geometry: {}", repaired);
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return repaired;
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}
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}

‎jts/src/main/java/com/baeldung/jts/utils/GeometryFactoryUtil.java

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package com.baeldung.jts.utils;
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import org.locationtech.jts.geom.Geometry;
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import org.locationtech.jts.io.WKTReader;
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public class GeometryFactoryUtil {
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public static Geometry readWKT(String wkt) throws Exception {
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WKTReader reader = new WKTReader();
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return reader.read(wkt);
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}
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}

‎jts/src/main/resources/application.properties

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spring.application.name=jts

‎jts/src/test/java/com/baeldung/jts/JtsApplicationTests.java

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package com.baeldung.jts;
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import com.baeldung.jts.operations.JTSOperationUtils;
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import com.baeldung.jts.utils.GeometryFactoryUtil;
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import org.junit.Assert;
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import org.junit.Test;
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import org.locationtech.jts.geom.Geometry;
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public class JtsApplicationTests {
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@Test
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public void givenPolygon2D_whenContainPoint_thenContainmentIsTrue() throws Exception {
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Geometry point = GeometryFactoryUtil.readWKT("POINT (10 20)");
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Geometry polygon = GeometryFactoryUtil.readWKT("POLYGON ((0 0, 0 40, 40 40, 40 0, 0 0))");
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Assert.assertTrue(JTSOperationUtils.isContainment(point, polygon));
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}
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@Test
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public void givenRectangle1_whenIntersectWithRectangle2_thenIntersectionIsTrue() throws Exception {
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Geometry rectangle1 = GeometryFactoryUtil.readWKT("POLYGON ((10 10, 10 30, 30 30, 30 10, 10 10))");
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Geometry rectangle2 = GeometryFactoryUtil.readWKT("POLYGON ((20 20, 20 40, 40 40, 40 20, 20 20))");
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Assert.assertTrue(JTSOperationUtils.checkIntersect(rectangle1, rectangle2));
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}
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@Test
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public void givenPoint_whenAddedBuffer_thenPointIsInsideTheBuffer() throws Exception {
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Geometry point = GeometryFactoryUtil.readWKT("POINT (10 10)");
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Geometry bufferArea = JTSOperationUtils.getBuffer(point, 5);
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Assert.assertTrue(JTSOperationUtils.isContainment(point, bufferArea));
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}
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@Test
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public void givenTwoPoints_whenGetDistanceBetween_thenGetTheDistance() throws Exception {
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Geometry point1 = GeometryFactoryUtil.readWKT("POINT (10 10)");
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Geometry point2 = GeometryFactoryUtil.readWKT("POINT (13 14)");
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double distance = JTSOperationUtils.getDistance(point1, point2);
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double expectedResult = 5.00;
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double delta = 0.00;
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Assert.assertEquals(expectedResult, distance, delta);
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}
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@Test
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public void givenTwoGeometries_whenGetUnionOfBoth_thenGetTheUnion() throws Exception {
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Geometry geometry1 = GeometryFactoryUtil.readWKT("POLYGON ((0 0, 0 10, 10 10, 10 0, 0 0))");
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Geometry geometry2 = GeometryFactoryUtil.readWKT("POLYGON ((10 0, 10 10, 20 10, 20 0, 10 0))");
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Geometry union = JTSOperationUtils.getUnion(geometry1, geometry2);
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Geometry expectedResult = GeometryFactoryUtil.readWKT("POLYGON ((0 0, 0 10, 10 10, 20 10, 20 0, 10 0, 0 0))");
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Assert.assertEquals(expectedResult, union);
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}
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@Test
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public void givenBaseRectangle_whenAnotherRectangleOverlapping_GetTheDifferenceRectangle() throws Exception {
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Geometry base = GeometryFactoryUtil.readWKT("POLYGON ((0 0, 0 10, 10 10, 10 0, 0 0))");
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Geometry cut = GeometryFactoryUtil.readWKT("POLYGON ((5 0, 5 10, 10 10, 10 0, 5 0))");
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Geometry result = JTSOperationUtils.getDifference(base, cut);
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Geometry expectedResult = GeometryFactoryUtil.readWKT("POLYGON ((0 0, 0 10, 5 10, 5 0, 0 0))");
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Assert.assertEquals(expectedResult, result);
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}
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@Test
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public void givenInvalidGeometryValue_whenValidated_thenGiveFixedResult() throws Exception {
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Geometry invalidGeo = GeometryFactoryUtil.readWKT("POLYGON ((0 0, 5 5, 5 0, 0 5, 0 0))");
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Geometry result = JTSOperationUtils.validateAndRepair(invalidGeo);
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Geometry expectedResult = GeometryFactoryUtil.readWKT("POLYGON ((2.5 2.5, 5 5, 5 0, 2.5 2.5))");
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Assert.assertEquals(expectedResult, result);
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}
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}

‎pom.xml

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<module>spring-di-2</module>
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<module>spring-security-modules/spring-security-legacy-oidc</module>
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<module>spring-reactive-modules/spring-reactive-kafka-stream-binder</module>
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<module>jts</module>
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</modules>
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<properties>

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