diff --git a/core-java-modules/core-java-string-conversions-3/src/test/java/com/baeldung/stringtolong/StringToLongPrimitiveOrLongObjectUnitTest.java b/core-java-modules/core-java-string-conversions-3/src/test/java/com/baeldung/stringtolong/StringToLongPrimitiveOrLongObjectUnitTest.java
index 99f0adf792..e437529726 100644
--- a/core-java-modules/core-java-string-conversions-3/src/test/java/com/baeldung/stringtolong/StringToLongPrimitiveOrLongObjectUnitTest.java
+++ b/core-java-modules/core-java-string-conversions-3/src/test/java/com/baeldung/stringtolong/StringToLongPrimitiveOrLongObjectUnitTest.java
@@ -11,79 +11,79 @@ import com.google.common.primitives.Longs;
 public class StringToLongPrimitiveOrLongObjectUnitTest {
 
     @Test
-    public void givenString_whenUsingLongConstructor_thenObtainLongObject() {
+    void givenString_whenUsingLongConstructor_thenObtainLongObject() {
         Long l = new Long("2147483648");
         assertThat(l).isEqualTo(2147483648L);
     }
 
     @Test
-    public void givenInvalidString_whenUsingLongConstructor_thenNumberFormatExceptionThrown() {
+    void givenInvalidString_whenUsingLongConstructor_thenNumberFormatExceptionThrown() {
         Assertions.assertThrows(NumberFormatException.class, () -> new Long("Invalid String"));
     }
 
     @Test
-    public void givenString_whenUsingLongValueOf_thenObtainLongObject() {
+    void givenString_whenUsingLongValueOf_thenObtainLongObject() {
         Long l = Long.valueOf("2147483648");
         assertThat(l).isEqualTo(2147483648L);
     }
 
     @Test
-    public void givenInvalidString_whenUsingLongValueOf_thenNumberFormatExceptionThrown() {
+    void givenInvalidString_whenUsingLongValueOf_thenNumberFormatExceptionThrown() {
         Assertions.assertThrows(NumberFormatException.class, () -> Long.valueOf("Invalid String"));
     }
 
     @Test
-    public void givenString_whenUsingParseLong_thenObtainLongPrimitive() {
+    void givenString_whenUsingParseLong_thenObtainLongPrimitive() {
         long l = Long.parseLong("2147483648");
         assertThat(l).isEqualTo(2147483648L);
     }
 
     @Test
-    public void givenInvalidString_whenUsingParseLong_thenNumberFormatExceptionThrown() {
+    void givenInvalidString_whenUsingParseLong_thenNumberFormatExceptionThrown() {
         Assertions.assertThrows(NumberFormatException.class, () -> Long.parseLong("Invalid String"));
     }
 
     @Test
-    public void givenHexadecimalString_whenUsingLongDecode_thenObtainLongObject() {
+    void givenHexadecimalString_whenUsingLongDecode_thenObtainLongObject() {
         Long l = Long.decode("0x80000000");
         assertThat(l).isEqualTo(2147483648L);
     }
 
     @Test
-    public void givenInvalidString_whenUsingLongDecode_thenNumberFormatExceptionThrown() {
+    void givenInvalidString_whenUsingLongDecode_thenNumberFormatExceptionThrown() {
         Assertions.assertThrows(NumberFormatException.class, () -> Long.decode("Invalid String"));
     }
 
     @Test
-    public void givenHexadecimalString_whenUsingApacheCommonsNumberUtils_thenObtainLongObject() {
+    void givenHexadecimalString_whenUsingApacheCommonsNumberUtils_thenObtainLongObject() {
         Long l = NumberUtils.createLong("0x80000000");
         assertThat(l).isEqualTo(2147483648L);
     }
 
     @Test
-    public void givenInvalidString_whenUsingApacheCommonsNumberUtils_thenNumberFormatExceptionThrown() {
+    void givenInvalidString_whenUsingApacheCommonsNumberUtils_thenNumberFormatExceptionThrown() {
         Assertions.assertThrows(NumberFormatException.class, () -> NumberUtils.createLong("Invalid String"));
     }
 
     @Test
-    public void givenString_whenUsingParseUnsignedLong_thenObtainUnsignedLongObject() {
+    void givenString_whenUsingParseUnsignedLong_thenObtainUnsignedLongObject() {
         Long l = Long.parseUnsignedLong("9223372036854775808");
         assertThat(Long.toUnsignedString(l)).isEqualTo("9223372036854775808");
     }
 
     @Test
-    public void givenInvalidString_whenUsingParseUnsignedLong_thenNumberFormatExceptionThrown() {
+    void givenInvalidString_whenUsingParseUnsignedLong_thenNumberFormatExceptionThrown() {
         Assertions.assertThrows(NumberFormatException.class, () -> Long.parseUnsignedLong("Invalid String"));
     }
 
     @Test
-    public void givenString_whenUsingGuavaLongs_thenObtainLongObject() {
+    void givenString_whenUsingGuavaLongs_thenObtainLongObject() {
         Long l = Longs.tryParse("2147483648");
         assertThat(l).isEqualTo(2147483648L);
     }
 
     @Test
-    public void givenInvalidString_whenUsingGuavaLongs_thenObtainNull() {
+    void givenInvalidString_whenUsingGuavaLongs_thenObtainNull() {
         assertThat(Longs.tryParse("Invalid String")).isNull();
     }
 }
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