Use local variable type inference (#995)

* "visitor" pattern: Use local variable type inference

Update "visitor" pattern with local variable type inference.

* "value-object" pattern: Use local variable type inference

Update "value-object" pattern with local variable type inference.

* "unit-of-work" pattern: Use local variable type inference

Update "value-object" pattern with local variable type inference.

* "typeobjectpattern" pattern: Use local variable type inference

Update "value-object" pattern with local variable type inference.

visitor/src/main/java/com/iluwatar/visitor/App.java

@@ -41,7 +41,7 @@ public class App {
    */
   public static void main(String[] args) {
 
-    Commander commander =
+    var commander =
         new Commander(new Sergeant(new Soldier(), new Soldier(), new Soldier()), new Sergeant(
             new Soldier(), new Soldier(), new Soldier()));
     commander.accept(new SoldierVisitor());

visitor/src/main/java/com/iluwatar/visitor/Unit.java

@@ -39,7 +39,7 @@ public abstract class Unit {
    * Accept visitor
    */
   public void accept(UnitVisitor visitor) {
-    for (Unit child : children) {
+    for (var child : children) {
       child.accept(visitor);
     }
   }

visitor/src/test/java/com/iluwatar/visitor/UnitTest.java

@@ -56,15 +56,15 @@ public abstract class UnitTest<U extends Unit> {
 
   @Test
   public void testAccept() {
-    final Unit[] children = new Unit[5];
+    final var children = new Unit[5];
     Arrays.setAll(children, (i) -> mock(Unit.class));
 
-    final U unit = this.factory.apply(children);
-    final UnitVisitor visitor = mock(UnitVisitor.class);
+    final var unit = this.factory.apply(children);
+    final var visitor = mock(UnitVisitor.class);
     unit.accept(visitor);
     verifyVisit(unit, visitor);
 
-    for (final Unit child : children) {
+    for (final var child : children) {
       verify(child).accept(eq(visitor));
     }