BAEL-837 - initial commit. A few examples of adding doubles.

core-java/src/main/java/com/baeldung/maths/FloatingPointArithmetic.java

@@ -0,0 +1,44 @@
+package com.baeldung.maths;
+
+import java.math.BigDecimal;
+
+public class FloatingPointArithmetic {
+    public static void main(String[] args) {
+        
+        double a = 13.22;
+        double b = 4.88;
+        double c = 21.45;
+        
+        System.out.println("a =         " + a);
+        System.out.println("b =         " + b);
+        System.out.println("c =         " + c);
+        
+        double ab = a + b;
+        System.out.println("a + b =     " + ab);
+        
+        double abc =  a + b + c;
+        System.out.println("a + b + c = " + abc);
+        
+        double ac = a + c;
+        System.out.println("a + c =     " + ac);
+        
+        double acb = a + c + b;
+        System.out.println("a + c + b = " + acb);
+        
+        double ac_b = ac + b;
+        System.out.println("ac + b =    " + ac_b);
+        
+        BigDecimal d = new BigDecimal(String.valueOf(a));
+        BigDecimal e = new BigDecimal(String.valueOf(b));
+        BigDecimal f = new BigDecimal(String.valueOf(c));
+        
+        BigDecimal def;
+        BigDecimal dfe;
+        
+        def = d.add(e).add(f);
+        dfe = d.add(f).add(e);
+        
+        System.out.println("d + e + f = " + def);
+        System.out.println("d + f + e = " + dfe);
+    }
+}