Bael 6962 convert double to float in java (#14883)

* Commit 1 - Anton Dalagan Code for Evaluation article. Contains Unit tests, domain class, and App main method.

* BAEL-6962 - Created unit test, and updated pom.xml

* BAEL-6962 - Removed files unrelated to the article

* BAEL-6962 - Added a declartions for float and double in diff class. Updated unit tests.

core-java-modules/core-java-numbers-conversions/pom.xml

@@ -18,6 +18,18 @@
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.testng</groupId>
+            <artifactId>testng</artifactId>
+            <version>RELEASE</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.13.2</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>

core-java-modules/core-java-numbers-conversions/src/main/java/com/baeldung/floatdoubleconversions/FloatAndDoubleConversions.java

@@ -0,0 +1,15 @@
+package com.baeldung.floatdoubleconversions;
+
+public class FloatAndDoubleConversions {
+    public static void main(String args[]){
+        float vatRate = 14.432511f;
+        System.out.println("vatRate:"+vatRate);
+        Float localTaxRate = 20.12434f;
+        System.out.println("localTaxRate:"+localTaxRate);
+
+        double shootingAverage = 56.00000000000001;
+        System.out.println("shootingAverage:"+shootingAverage);
+        Double assistAverage = 81.123000000045;
+        System.out.println("assistAverage:"+assistAverage);
+    }
+}

core-java-modules/core-java-numbers-conversions/src/test/java/com/baeldung/floatdoubleconversions/FloatDoubleConversionsTest.java

@@ -0,0 +1,33 @@
+package com.baeldung.floatdoubleconversions;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class FloatDoubleConversionsTest {
+
+    @Test
+    public void whenDoubleType_thenFloatTypeSuccess(){
+        double interestRatesYearly = 13.333333333333334;
+        float interest = (float) interestRatesYearly;
+        System.out.println(interest);  //13.333333
+        Assert.assertTrue(Float.class.isInstance(interest));//true
+
+        Double monthlyRates = 2.111111111111112;
+        float rates = monthlyRates.floatValue();
+        System.out.println(rates);  //2.1111112
+        Assert.assertTrue(Float.class.isInstance(rates));//true
+    }
+    @Test
+    public void whenFloatType_thenDoubleTypeSuccess(){
+        float gradeAverage =2.05f;
+        double average = gradeAverage;
+        System.out.println(average);  //2.049999952316284
+        Assert.assertTrue(Double.class.isInstance(average));//true
+
+        Float monthlyRates = 2.1111112f;
+        Double rates = monthlyRates.doubleValue();
+        System.out.println(rates);  //2.1111112
+        Assert.assertTrue(Double.class.isInstance(rates));//true
+    }
+
+}