The Value of 0xFF Number and Its Uses With & Operation in Java Article by Abdallah Sawan

java-numbers-4/src/main/java/com/baeldung/number_0xff/Number0xff.java

@@ -15,6 +15,6 @@ public class Number0xff {
     }
 
     public static int getAlfa(int rgba) {
-        return rgba >> rgba & 0xff;
+        return rgba & 0xff;
     }
 }

java-numbers-4/src/test/java/com/baeldung/number_0xff/Number0xffUnitTest.java

@@ -22,7 +22,7 @@ public class Number0xffUnitTest {
     @Test
     public void givenColor_whenGetRedColor_thenExtractRedColor() {
         int rgba = 272214023;
-        int expectedValue = 64;
+        int expectedValue = 16;
         assertEquals(Number0xff.getRedColor(rgba), expectedValue);
     }