Fix critical typo in ZoneVerifier; more sonarlint

src/main/java/com/verisignlabs/dnssec/cl/SignKeyset.java

@@ -22,7 +22,6 @@ import java.io.FileFilter;
 import java.io.IOException;
 import java.time.Instant;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.List;
 
 import org.apache.commons.cli.CommandLine;

src/main/java/com/verisignlabs/dnssec/cl/SignRRset.java

@@ -21,7 +21,6 @@ import java.io.File;
 import java.io.IOException;
 import java.time.Instant;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.List;
 
 import org.apache.commons.cli.CommandLine;

src/main/java/com/verisignlabs/dnssec/cl/SignZone.java

@@ -24,7 +24,6 @@ import java.io.FileReader;
 import java.io.IOException;
 import java.time.Instant;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Random;

src/main/java/com/verisignlabs/dnssec/security/DnsKeyAlgorithm.java

@@ -455,9 +455,7 @@ public class DnsKeyAlgorithm {
    *         alias.
    */
   public boolean supportedAlgorithm(int algorithm) {
-    if (mAlgorithmMap.containsKey(algorithm))
-      return true;
-    return false;
+    return mAlgorithmMap.containsKey(algorithm);
   }
 
   /**

src/main/java/com/verisignlabs/dnssec/security/DnsSecVerifier.java

@@ -262,7 +262,7 @@ public class DnsSecVerifier {
    * @return true if the set verified, false if it did not.
    */
   public boolean verify(RRset rrset) {
-    boolean result = mVerifyAllSigs ? true : false;
+    boolean result = mVerifyAllSigs;
 
     if (rrset.sigs().isEmpty()) {
       log.fine("RRset failed to verify due to lack of signatures");

src/main/java/com/verisignlabs/dnssec/security/ZoneVerifier.java

@@ -84,6 +84,14 @@ public class ZoneVerifier {
     private static final long serialVersionUID = 1L;
     private boolean mIsMarked = false;
 
+    @Override
+    public boolean equals(Object o) {
+      return super.equals(o);
+    }
+    @Override
+    public int hashCode() {
+      return super.hashCode();
+    }
     boolean getMark() {
       return mIsMarked;
     }
@@ -161,7 +169,7 @@ public class ZoneVerifier {
       if (mNSEC3Map == null) {
         mNSEC3Map = new TreeMap<>();
       }
-      MarkRRset rrset = mNSECMap.computeIfAbsent(n, k -> new MarkRRset());
+      MarkRRset rrset = mNSEC3Map.computeIfAbsent(n, k -> new MarkRRset());
 
       return addRRtoRRset(rrset, r);
     }
@@ -326,6 +334,8 @@ public class ZoneVerifier {
       }
 
       switch (mDNSSECType) {
+        case UNSIGNED:
+          throw new IllegalArgumentException("Cannot process Unsigned zone");
         case NSEC:
           // all nodes with NSEC records have NSEC and RRSIG types
           typeset.add(Type.NSEC);