BAEL-1106 Introduction to javax.measure (#2522)

* BAEL-243 Spring Batch using Partitioner

* BAEL-1106 Introduction to javax.measure

* Unnecessary Committed

* BAEL-1106 Move code to libraries from core-java

* BAEL-1106 Move code to libraries from core-java

* Update pom.xml

libraries/pom.xml

@@ -136,6 +136,11 @@
 			<artifactId>commons-text</artifactId>
 			<version>${commons-text.version}</version>
 		</dependency>
+     <dependency>
+         <groupId>javax.measure</groupId>
+         <artifactId>jsr-275</artifactId>
+         <version>1.0.0</version>
+    </dependency>
 		<dependency>
 			<groupId>org.apache.commons</groupId>
 			<artifactId>commons-collections4</artifactId>

libraries/src/main/java/com/baeldung/javax/measure/WaterTank.java

@@ -0,0 +1,26 @@
+package com.baeldung.javax.measure;
+
+import javax.measure.Measure;
+import javax.measure.quantity.Volume;
+
+public class WaterTank {
+
+    private Measure<Volume> capacityMeasure;
+    private double capacityDouble;
+
+    public void setCapacityMeasure(Measure<Volume> capacityMeasure) {
+        this.capacityMeasure = capacityMeasure;
+    }
+
+    public void setCapacityDouble(double capacityDouble) {
+        this.capacityDouble = capacityDouble;
+    }
+
+    public Measure<Volume> getCapacityMeasure() {
+        return capacityMeasure;
+    }
+
+    public double getCapacityDouble() {
+        return capacityDouble;
+    }
+}

libraries/src/test/java/com/baeldung/javax/measure/WaterTankTests.java

@@ -0,0 +1,68 @@
+package com.baeldung.javax.measure;
+
+import javax.measure.Measure;
+import javax.measure.converter.UnitConverter;
+import javax.measure.quantity.Duration;
+import javax.measure.quantity.Length;
+import javax.measure.quantity.Pressure;
+import javax.measure.quantity.Volume;
+import static javax.measure.unit.NonSI.HOUR;
+import static javax.measure.unit.NonSI.LITRE;
+import static javax.measure.unit.NonSI.MILE;
+import static javax.measure.unit.NonSI.MINUTE;
+import javax.measure.unit.SI;
+import static javax.measure.unit.SI.KILO;
+import static javax.measure.unit.SI.METER;
+import static javax.measure.unit.SI.NEWTON;
+import static javax.measure.unit.SI.SECOND;
+import javax.measure.unit.Unit;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import org.junit.Test;
+
+public class WaterTankTests {
+
+    @Test
+    public void givenMeasure_whenGetUnitAndConvertValue_thenSuccess() {
+        WaterTank waterTank = new WaterTank();
+        waterTank.setCapacityMeasure(Measure.valueOf(9.2, LITRE));
+        assertEquals(LITRE, waterTank.getCapacityMeasure().getUnit());
+
+        Measure<Volume> waterCapacity = waterTank.getCapacityMeasure();
+        double volumeInLitre = waterCapacity.getValue().doubleValue();
+        assertEquals(9.2, volumeInLitre, 0.0f);
+
+        double volumeInMilliLitre = waterCapacity.doubleValue(SI.MILLI(LITRE));
+        assertEquals(9200.0, volumeInMilliLitre, 0.0f);
+
+        Unit<Length> Kilometer = SI.KILO(METER);
+        Unit<Length> Centimeter = SI.CENTI(METER);
+    }
+
+    @Test
+    public void givenMeasure_whenAlternateMeasure_ThenGetAlternateMeasure() {
+        Unit<Pressure> PASCAL = NEWTON.divide(METER.pow(2)).alternate("Pa");
+        assertTrue(Unit.valueOf("Pa").equals(PASCAL));
+    }
+
+    @Test
+    public void givenMeasure_whenCompoundMeasure_ThenGetCompoundMeasure() {
+        Unit<Duration> HOUR_MINUTE_SECOND = HOUR.compound(MINUTE).compound(SECOND);
+        Measure<Duration> duration = Measure.valueOf(12345, SECOND);
+        assertEquals("3h25min45s", duration.to(HOUR_MINUTE_SECOND).toString());
+    }
+
+    @Test
+    public void givenMiles_whenConvertToKilometer_ThenConverted() {
+        double distanceInMiles = 50.0;
+        UnitConverter mileToKilometer = MILE.getConverterTo(KILO(METER));
+        double distanceInKilometers = mileToKilometer.convert(distanceInMiles);
+        assertEquals(80.4672, distanceInKilometers, 0.00f);
+    }
+
+    @Test
+    public void givenSymbol_WhenCompareToSystemUnit_ThenSuccess() {
+        assertTrue(Unit.valueOf("kW").equals(SI.KILO(SI.WATT)));
+        assertTrue(Unit.valueOf("ms").equals(SI.SECOND.divide(1000)));
+    }
+}