Use Objects#requireNonNull()

Author: garydgregory

src/main/java/org/apache/commons/codec/cli/Digest.java

@@ -22,6 +22,7 @@
 import java.security.MessageDigest;
 import java.util.Arrays;
 import java.util.Locale;
+import java.util.Objects;
 
 import org.apache.commons.codec.binary.Hex;
 import org.apache.commons.codec.digest.DigestUtils;
@@ -58,9 +59,7 @@ public static void main(final String[] args) throws IOException {
     private final String[] inputs;
 
     private Digest(final String[] args) {
-        if (args == null) {
-            throw new IllegalArgumentException("args");
-        }
+        Objects.requireNonNull(args);
         final int argsLength = args.length;
         if (argsLength == 0) {
             throw new IllegalArgumentException(

src/test/java/org/apache/commons/codec/cli/DigestTest.java

@@ -38,6 +38,6 @@ public void testEmptyArguments() {
      */
     @Test
     public void testNullArguments() {
-        assertThrows(IllegalArgumentException.class, () -> Digest.main(null));
+        assertThrows(NullPointerException.class, () -> Digest.main(null));
     }
 }