fix string test

lor6 · lor6 · commit ea797d5c5bb1 · 2019-05-10T23:57:22.000+03:00
diff --git a/core-java-modules/core-java-8/src/test/java/com/baeldung/java8/optional/OptionalChainingUnitTest.java b/core-java-modules/core-java-8/src/test/java/com/baeldung/java8/optional/OptionalChainingUnitTest.java
@@ -101,7 +101,7 @@ private Optional<String> getBye() {
     }
 
     private Optional<String> createOptional(String input) {
-        if (input == null || input == "" || input == "empty") {
+        if (input == null || "".equals(input) || "empty".equals(input)) {
             return Optional.empty();
         }
 

Original file line number	Diff line number	Diff line change
`@@ -101,7 +101,7 @@ private Optional<String> getBye() {`
`101`	`101`	`}`
`102`	`102`
`103`	`103`	`private Optional<String> createOptional(String input) {`
`104`		`- if (input == null \|\| input == "" \|\| input == "empty") {`
	`104`	`+ if (input == null \|\| "".equals(input) \|\| "empty".equals(input)) {`
`105`	`105`	`return Optional.empty();`
`106`	`106`	`}`
`107`	`107`