added boiling and freezing point exercises

src/main/java/com/levelup/java/exercises/beginner/FreezingAndBoilingPoints.java

@@ -0,0 +1,151 @@
+package com.levelup.java.exercises.beginner;
+
+import java.util.Scanner;
+
+/**
+ * This java example will demonstrate a solution to the Freezing and boiling exercise.
+ * 
+ * @author Justin Musgrove
+ * @see <a href='http://www.leveluplunch.com/java/exercises/freezing-boiling-points/'>Freezing and Boiling Points</a>
+ */
+public class FreezingAndBoilingPoints {
+
+	public class FreezeAndBoiling {
+
+		private double temperature;
+
+		public FreezeAndBoiling(double t) {
+			temperature = t;
+		}
+
+		public double getTemperature() {
+			return temperature;
+		}
+
+		/**
+		 * Method should check if the temperature is freezing
+		 * 
+		 * @return true if Ethyl is freezing
+		 */
+		public boolean isEthylAlchoolFreezing() {
+
+			if (temperature <= -173.0) {
+				return true;
+			} else {
+				return false;
+			}
+		}
+
+		/**
+		 * Method should check if the temperature is boiling
+		 * 
+		 * @return true if Ethyl is boiling
+		 */
+		public boolean isEthylAlchoolBoiling() {
+
+			if (temperature >= 172.0) {
+				return true;
+			} else {
+				return false;
+			}
+		}
+
+		/**
+		 * Method should check if the temperature is freezing
+		 * 
+		 * @return true if Oxygen is freezing
+		 */
+		public boolean isOxygenFreezing() {
+
+			if (temperature <= -362.0) {
+				return true;
+			} else {
+				return false;
+			}
+		}
+
+		/**
+		 * Method should check if the temperature is boiling
+		 * 
+		 * @return true if Oxygen is boiling
+		 */
+		public boolean isOxygenBoiling() {
+
+			if (temperature >= -306.0) {
+				return true;
+			} else {
+				return false;
+			}
+		}
+
+		/**
+		 * Method should check if the temperature is freezing
+		 * 
+		 * @return true if Water is freezing
+		 */
+		public boolean isWaterFreezing() {
+
+			if (temperature <= 32.0) {
+				return true;
+			} else {
+				return false;
+			}
+		}
+
+		/**
+		 * Method should check if the temperature is boiling
+		 * 
+		 * @return true if Water is boiling
+		 */
+		public boolean isWaterBoiling() {
+
+			if (temperature >= 212.0) {
+				return true;
+			} else {
+				return false;
+			}
+		}
+	}
+
+	public static void main(String[] args) {
+
+		// Create a Scanner object for keyboard input.
+		Scanner keyboard = new Scanner(System.in);
+
+		System.out.print("Enter a temperature: ");
+		double temperature = keyboard.nextDouble();
+
+		// close keyboard
+		keyboard.close();
+
+		FreezingAndBoilingPoints freezeAndBoilingPoints = new FreezingAndBoilingPoints();
+		FreezeAndBoiling freezeAndBoiling = freezeAndBoilingPoints.new FreezeAndBoiling(
+				temperature);
+
+		// Display elements will freeze.
+		if (freezeAndBoiling.isEthylAlchoolBoiling()) {
+			System.out.println("Ethyl alcohol will freeze.");
+		}
+
+		if (freezeAndBoiling.isOxygenFreezing()) {
+			System.out.println("Oxygen will freeze.");
+		}
+
+		if (freezeAndBoiling.isWaterFreezing())
+			System.out.println("Water will freeze.");
+
+		// Display if elements will boil.
+		if (freezeAndBoiling.isEthylAlchoolBoiling()) {
+			System.out.println("Ethyl alcohol will boil.");
+		}
+
+		if (freezeAndBoiling.isOxygenBoiling()) {
+			System.out.println("Oxygen will boil.");
+		}
+
+		if (freezeAndBoiling.isWaterBoiling()) {
+			System.out.println("Water will boil.");
+		}
+	}
+
+}

src/test/java/com/levelup/java/exercises/beginner/FreezingAndBoilingPointsTest.java

@@ -0,0 +1,77 @@
+package com.levelup.java.exercises.beginner;
+
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+import com.levelup.java.exercises.beginner.FreezingAndBoilingPoints.FreezeAndBoiling;
+
+/**
+ * Unit test for {@link FreezingAndBoilingPoints}
+ * 
+ * @author Justin Musgrove
+ * @see <a href='http://www.leveluplunch.com/java/exercises/freezing-boiling-points/'>Freezing and Boiling Points</a>
+ */
+public class FreezingAndBoilingPointsTest {
+
+	@Test
+	public void test_isEthylAlchoolFreezing() {
+
+		FreezingAndBoilingPoints freezeAndBoilingPoints = new FreezingAndBoilingPoints();
+		FreezeAndBoiling freezeAndBoiling = freezeAndBoilingPoints.new FreezeAndBoiling(
+				-174);
+
+		assertTrue(freezeAndBoiling.isEthylAlchoolFreezing());
+	}
+
+	@Test
+	public void test_isEthylAlchoolBoiling() {
+
+		FreezingAndBoilingPoints freezeAndBoilingPoints = new FreezingAndBoilingPoints();
+		FreezeAndBoiling freezeAndBoiling = freezeAndBoilingPoints.new FreezeAndBoiling(
+				172);
+
+		assertTrue(freezeAndBoiling.isEthylAlchoolBoiling());
+	}
+
+	@Test
+	public void test_isOxygenFreezing() {
+
+		FreezingAndBoilingPoints freezeAndBoilingPoints = new FreezingAndBoilingPoints();
+		FreezeAndBoiling freezeAndBoiling = freezeAndBoilingPoints.new FreezeAndBoiling(
+				-400);
+
+		assertTrue(freezeAndBoiling.isOxygenFreezing());
+	}
+
+	@Test
+	public void test_isOxygenBoiling() {
+
+		FreezingAndBoilingPoints freezeAndBoilingPoints = new FreezingAndBoilingPoints();
+		FreezeAndBoiling freezeAndBoiling = freezeAndBoilingPoints.new FreezeAndBoiling(
+				-362);
+
+		assertTrue(freezeAndBoiling.isOxygenFreezing());
+	}
+
+	@Test
+	public void test_isWaterFreezing() {
+
+		FreezingAndBoilingPoints freezeAndBoilingPoints = new FreezingAndBoilingPoints();
+		FreezeAndBoiling freezeAndBoiling = freezeAndBoilingPoints.new FreezeAndBoiling(
+				10);
+
+		assertTrue(freezeAndBoiling.isWaterFreezing());
+	}
+
+	@Test
+	public void test_isWaterBoiling() {
+
+		FreezingAndBoilingPoints freezeAndBoilingPoints = new FreezingAndBoilingPoints();
+		FreezeAndBoiling freezeAndBoiling = freezeAndBoilingPoints.new FreezeAndBoiling(
+				213);
+
+		assertTrue(freezeAndBoiling.isWaterBoiling());
+	}
+
+}