Java 8 Optional

Author: lokeshgupta1981

src/main/java/com/howtodoinjava/core/optional/OptionalExamples.java

@@ -0,0 +1,20 @@
+package com.howtodoinjava.core.optional;
+
+import java.util.Optional;
+
+public class OptionalExamples {
+
+  public static void main(String[] args) {
+    Optional<String> optionalValue = Optional.of("Hello");
+    String result = optionalValue.orElse( generateDefaultValue() );	// Using orElse()
+    System.out.println(STR."Result using orElse(): \{result}");
+
+    result = optionalValue.orElseGet(() -> generateDefaultValue() );  // Using orElseGet()
+    System.out.println(STR."Result using orElseGet(): \{result}");
+  }
+
+  public static String generateDefaultValue() {
+    System.out.println("Generating Default Value");
+    return "Default Value";
+  }
+}