Fix quality flaws

3 files changed, 8 insertions, 8 deletions

diff --git a/sonar-plugin-api/src/main/java/org/sonar/api/notifications/Notification.java b/sonar-plugin-api/src/main/java/org/sonar/api/notifications/Notification.java
index 0666e7260f1..42eca231134 100644
--- a/sonar-plugin-api/src/main/java/org/sonar/api/notifications/Notification.java
+++ b/sonar-plugin-api/src/main/java/org/sonar/api/notifications/Notification.java
@@ -121,8 +121,8 @@ public class Notification implements Serializable {
   }
 
   @Override
-  public boolean equals(Object obj) {
-    if (!(obj instanceof Notification)) {
+  public boolean equals(@Nullable Object obj) {
+    if (obj == null || this.getClass() != obj.getClass()) {
       return false;
     }
     if (this == obj) {
diff --git a/sonar-plugin-api/src/main/java/org/sonar/api/rules/ActiveRuleParam.java b/sonar-plugin-api/src/main/java/org/sonar/api/rules/ActiveRuleParam.java
index 683f52cde43..7f83179429f 100644
--- a/sonar-plugin-api/src/main/java/org/sonar/api/rules/ActiveRuleParam.java
+++ b/sonar-plugin-api/src/main/java/org/sonar/api/rules/ActiveRuleParam.java
@@ -104,12 +104,12 @@ public class ActiveRuleParam implements Cloneable {
 
   @Override
   public boolean equals(Object obj) {
-    if (!(obj instanceof ActiveRuleParam)) {
-      return false;
-    }
     if (this == obj) {
       return true;
     }
+    if (this.getClass() != obj.getClass()) {
+      return false;
+    }
     ActiveRuleParam other = (ActiveRuleParam) obj;
     return other.getKey().equals(getKey());
   }
diff --git a/sonar-plugin-api/src/main/java/org/sonar/api/server/debt/internal/DefaultDebtRemediationFunction.java b/sonar-plugin-api/src/main/java/org/sonar/api/server/debt/internal/DefaultDebtRemediationFunction.java
index d9ac5cb7813..1445f50883d 100644
--- a/sonar-plugin-api/src/main/java/org/sonar/api/server/debt/internal/DefaultDebtRemediationFunction.java
+++ b/sonar-plugin-api/src/main/java/org/sonar/api/server/debt/internal/DefaultDebtRemediationFunction.java
@@ -101,12 +101,12 @@ public class DefaultDebtRemediationFunction implements DebtRemediationFunction {
 
   @Override
   public boolean equals(Object o) {
-    if (!(o instanceof DefaultDebtRemediationFunction)) {
-      return false;
-    }
     if (this == o) {
       return true;
     }
+    if (this.getClass() != o.getClass()) {
+      return false;
+    }
     DefaultDebtRemediationFunction other = (DefaultDebtRemediationFunction) o;
     return new EqualsBuilder()
       .append(coefficient, other.coefficient())