From 9f9fbc4523d58ce40570f20a9dd631fda3322d41 Mon Sep 17 00:00:00 2001
From: parthkaria <parthkaria.92@gmail.com>
Date: Tue, 29 Aug 2017 17:14:13 +0530
Subject: [PATCH] BAEL-1106 Introduction to javax.measure

---
 core-java/pom.xml                             |  8 +++
 .../com/baeldung/javax/measure/WaterTank.java | 26 +++++++
 .../javax/measure/WaterTankTests.java         | 68 +++++++++++++++++++
 3 files changed, 102 insertions(+)
 create mode 100644 core-java/src/main/java/com/baeldung/javax/measure/WaterTank.java
 create mode 100644 core-java/src/test/java/com/baeldung/javax/measure/WaterTankTests.java

diff --git a/core-java/pom.xml b/core-java/pom.xml
index 0f8a665fa1..5410ea54e2 100644
--- a/core-java/pom.xml
+++ b/core-java/pom.xml
@@ -212,6 +212,13 @@
             <artifactId>streamex</artifactId>
             <version>${streamex.version}</version>
         </dependency>
+        
+        <dependency>
+            <groupId>javax.measure</groupId>
+            <artifactId>jsr-275</artifactId>
+            <version>${javax-measure.version}</version>
+        </dependency>
+    
     </dependencies>
 
     <build>
@@ -438,6 +445,7 @@
         <hirondelle-date4j.version>1.5.1</hirondelle-date4j.version>
         <protonpack.version>1.13</protonpack.version>
         <streamex.version>0.6.5</streamex.version>
+        <javax-measure.version>0.9.1</javax-measure.version>
 
         <!-- testing -->
         <org.hamcrest.version>1.3</org.hamcrest.version>
diff --git a/core-java/src/main/java/com/baeldung/javax/measure/WaterTank.java b/core-java/src/main/java/com/baeldung/javax/measure/WaterTank.java
new file mode 100644
index 0000000000..1ab9eee53f
--- /dev/null
+++ b/core-java/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;
+    }
+}
diff --git a/core-java/src/test/java/com/baeldung/javax/measure/WaterTankTests.java b/core-java/src/test/java/com/baeldung/javax/measure/WaterTankTests.java
new file mode 100644
index 0000000000..ef54035353
--- /dev/null
+++ b/core-java/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)));
+    }
+}