Minor refactorings and code style changes. 1) Removed several use of raw types 2) Removed unnecessary throws clauses 3) Used lambda expressions wherever applicable 4) Used apt assertion methods for readability 5) Use of try with resources wherever applicable 6) Corrected incorrect order of assertXXX arguments

retry/src/test/java/com/iluwatar/retry/FindCustomerTest.java

@@ -53,7 +53,7 @@ public class FindCustomerTest {
    * @throws Exception the expected exception
    */
   @Test
-  public void oneException() throws Exception {
+  public void oneException() {
     assertThrows(BusinessException.class, () -> {
       new FindCustomer("123", new BusinessException("test")).perform();
     });

retry/src/test/java/com/iluwatar/retry/RetryTest.java

@@ -40,7 +40,7 @@ public class RetryTest {
    * Should contain all errors thrown.
    */
   @Test
-  public void errors() throws Exception {
+  public void errors() {
     final BusinessException e = new BusinessException("unhandled");
     final Retry<String> retry = new Retry<>(
         () -> { throw e; },