Fixed the "Lambda Sort" Article

alimate · alimate · commit ab161647a052 · 2020-08-12T01:50:52.000+04:30
diff --git a/core-java-modules/core-java-lambdas/src/main/java/com/baeldung/java8/entity/Human.java b/core-java-modules/core-java-lambdas/src/main/java/com/baeldung/java8/entity/Human.java
@@ -37,7 +37,7 @@ public void setAge(final int age) {
 
     public static int compareByNameThenAge(final Human lhs, final Human rhs) {
         if (lhs.name.equals(rhs.name)) {
-            return lhs.age - rhs.age;
+            return Integer.compare(lhs.age, rhs.age);
         } else {
             return lhs.name.compareTo(rhs.name);
         }
diff --git a/core-java-modules/core-java-lambdas/src/test/java/com/baeldung/java8/Java8SortUnitTest.java b/core-java-modules/core-java-lambdas/src/test/java/com/baeldung/java8/Java8SortUnitTest.java
@@ -54,7 +54,7 @@ public final void whenSortingEntitiesByNameThenAge_thenCorrectlySorted() {
         final List<Human> humans = Lists.newArrayList(new Human("Sarah", 12), new Human("Sarah", 10), new Human("Zack", 12));
         humans.sort((lhs, rhs) -> {
             if (lhs.getName().equals(rhs.getName())) {
-                return lhs.getAge() - rhs.getAge();
+                return Integer.compare(lhs.getAge(), rhs.getAge());
             } else {
                 return lhs.getName().compareTo(rhs.getName());
             }

Original file line number	Diff line number	Diff line change
`@@ -37,7 +37,7 @@ public void setAge(final int age) {`
`37`	`37`
`38`	`38`	`public static int compareByNameThenAge(final Human lhs, final Human rhs) {`
`39`	`39`	`if (lhs.name.equals(rhs.name)) {`
`40`		`- return lhs.age - rhs.age;`
	`40`	`+ return Integer.compare(lhs.age, rhs.age);`
`41`	`41`	`} else {`
`42`	`42`	`return lhs.name.compareTo(rhs.name);`
`43`	`43`	`}`
Original file line number	Diff line number	Diff line change
`@@ -54,7 +54,7 @@ public final void whenSortingEntitiesByNameThenAge_thenCorrectlySorted() {`
`54`	`54`	`final List<Human> humans = Lists.newArrayList(new Human("Sarah", 12), new Human("Sarah", 10), new Human("Zack", 12));`
`55`	`55`	`humans.sort((lhs, rhs) -> {`
`56`	`56`	`if (lhs.getName().equals(rhs.getName())) {`
`57`		`- return lhs.getAge() - rhs.getAge();`
	`57`	`+ return Integer.compare(lhs.getAge(), rhs.getAge());`
`58`	`58`	`} else {`
`59`	`59`	`return lhs.getName().compareTo(rhs.getName());`
`60`	`60`	`}`