update

AnghelLeonard · AnghelLeonard · commit 9a7184a332b0 · 2019-08-24T07:49:36.000+03:00
diff --git a/Chapter_13/P262_ThrowingNoSuchElementException/src/modern/challenge/Book.java b/Chapter_13/P262_ThrowingNoSuchElementException/src/modern/challenge/Book.java
@@ -14,7 +14,7 @@ public String findStatusAvoid() {
         if (status.isPresent()) {
             return status.get();
         } else {
-            throw new NoSuchElementException();
+            throw new NoSuchElementException("Status cannot be found");
         }
     }
 
@@ -24,7 +24,10 @@ public String findStatusPrefer1() {
         // fetch an Optional prone to be empty
         Optional<String> status = Optional.empty();
 
-        return status.orElseThrow(IllegalStateException::new);
+        return status.orElseThrow(
+               () -> new IllegalStateException("Status cannot be found"));
+        // or without message
+        // return status.orElseThrow(IllegalStateException::new);
     }
 
     // Prefer (before Java 10)
@@ -33,7 +36,8 @@ public String findStatusPrefer2() {
         // fetch an Optional prone to be empty
         Optional<String> status = Optional.empty();
 
-        return status.orElseThrow(NoSuchElementException::new);
+        return status.orElseThrow(
+                () -> new IllegalStateException("Status cannot be found"));
     }
 
     // Prefer (Java 10+)
@@ -42,6 +46,6 @@ public String findStatusPrefer3() {
         // fetch an Optional prone to be empty
         Optional<String> status = Optional.empty();
 
-        return status.orElseThrow(); // NoSuchElementException
+        return status.orElseThrow(); // NoSuchElementException 
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -14,7 +14,7 @@ public String findStatusAvoid() {`
`14`	`14`	`if (status.isPresent()) {`
`15`	`15`	`return status.get();`
`16`	`16`	`} else {`
`17`		`- throw new NoSuchElementException();`
	`17`	`+ throw new NoSuchElementException("Status cannot be found");`
`18`	`18`	`}`
`19`	`19`	`}`
`20`	`20`
`@@ -24,7 +24,10 @@ public String findStatusPrefer1() {`
`24`	`24`	`// fetch an Optional prone to be empty`
`25`	`25`	`Optional<String> status = Optional.empty();`
`26`	`26`
`27`		`- return status.orElseThrow(IllegalStateException::new);`
	`27`	`+ return status.orElseThrow(`
	`28`	`+ () -> new IllegalStateException("Status cannot be found"));`
	`29`	`+ // or without message`
	`30`	`+ // return status.orElseThrow(IllegalStateException::new);`
`28`	`31`	`}`
`29`	`32`
`30`	`33`	`// Prefer (before Java 10)`
`@@ -33,7 +36,8 @@ public String findStatusPrefer2() {`
`33`	`36`	`// fetch an Optional prone to be empty`
`34`	`37`	`Optional<String> status = Optional.empty();`
`35`	`38`
`36`		`- return status.orElseThrow(NoSuchElementException::new);`
	`39`	`+ return status.orElseThrow(`
	`40`	`+ () -> new IllegalStateException("Status cannot be found"));`
`37`	`41`	`}`
`38`	`42`
`39`	`43`	`// Prefer (Java 10+)`
`@@ -42,6 +46,6 @@ public String findStatusPrefer3() {`
`42`	`46`	`// fetch an Optional prone to be empty`
`43`	`47`	`Optional<String> status = Optional.empty();`
`44`	`48`
`45`		`- return status.orElseThrow(); // NoSuchElementException`
	`49`	`+ return status.orElseThrow(); // NoSuchElementException`
`46`	`50`	`}`
`47`	`51`	`}`