Swap these 2 arguments, so they are in the correct order: expected value, actual value

testing-modules/junit-5/src/test/java/com/baeldung/junit5/order/AlphanumericOrderUnitTest.java

@@ -29,6 +29,6 @@ public class AlphanumericOrderUnitTest {
 
     @AfterAll
     public static void assertOutput() {
-        assertEquals(output.toString(), "ABa");
+        assertEquals("ABa", output.toString());
     }
 }

testing-modules/junit-5/src/test/java/com/baeldung/junit5/order/CustomOrderUnitTest.java

@@ -9,7 +9,7 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
 @TestMethodOrder(CustomOrder.class)
 public class CustomOrderUnitTest {
 
-    private static StringBuilder output = new StringBuilder("");
+    private static final StringBuilder output = new StringBuilder("");
 
     @Test
     void myATest() {
@@ -26,9 +26,8 @@ public class CustomOrderUnitTest {
         output.append("a");
     }
 
-
     @AfterAll
     public static void assertOutput() {
-        assertEquals(output.toString(), "AaB");
+        assertEquals("AaB", output.toString());
     }
 }

testing-modules/junit-5/src/test/java/com/baeldung/junit5/order/OrderAnnotationUnitTest.java

@@ -7,7 +7,8 @@ import static org.junit.jupiter.api.Assertions.*;
 
 @TestMethodOrder(OrderAnnotation.class)
 public class OrderAnnotationUnitTest {
-    private static StringBuilder output = new StringBuilder("");
+
+    private static final StringBuilder output = new StringBuilder();
 
     @Test
     @Order(1)
@@ -29,6 +30,6 @@ public class OrderAnnotationUnitTest {
 
     @AfterAll
     public static void assertOutput() {
-        assertEquals(output.toString(), "abc");
+        assertEquals("abc", output.toString());
     }
 }