diff --git a/assertj/src/test/java/com/baeldung/assertj/introduction/AssertJCoreTest.java b/assertj/src/test/java/com/baeldung/assertj/introduction/AssertJCoreTest.java
index 21bc40ae9f..fc134ece00 100644
--- a/assertj/src/test/java/com/baeldung/assertj/introduction/AssertJCoreTest.java
+++ b/assertj/src/test/java/com/baeldung/assertj/introduction/AssertJCoreTest.java
@@ -14,9 +14,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.NoSuchElementException;
 
-import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.api.Assertions.entry;
-import static org.assertj.core.api.Assertions.withPrecision;
+import static org.assertj.core.api.Assertions.*;
 
 public class AssertJCoreTest {
 
diff --git a/assertj/src/test/java/com/baeldung/assertj/introduction/AssertJGuavaTest.java b/assertj/src/test/java/com/baeldung/assertj/introduction/AssertJGuavaTest.java
index ca39a42f48..6f369b160e 100644
--- a/assertj/src/test/java/com/baeldung/assertj/introduction/AssertJGuavaTest.java
+++ b/assertj/src/test/java/com/baeldung/assertj/introduction/AssertJGuavaTest.java
@@ -24,10 +24,10 @@ public class AssertJGuavaTest {
 
     @Test
     public void givenTwoEmptyFiles_whenComparingContent_thenEqual() throws Exception {
-        final File temp = File.createTempFile("bael", "dung");
+        final File temp1 = File.createTempFile("bael", "dung1");
         final File temp2 = File.createTempFile("bael", "dung2");
 
-        assertThat(Files.asByteSource(temp))
+        assertThat(Files.asByteSource(temp1))
                 .hasSize(0)
                 .hasSameContentAs(Files.asByteSource(temp2));
     }