Add @nullable annotations

Author: Wohops

java-checks/src/main/java/org/sonar/java/checks/AbstractClassNoFieldShouldBeInterfaceCheck.java

@@ -36,6 +36,8 @@
 import org.sonar.squidbridge.annotations.SqaleConstantRemediation;
 import org.sonar.squidbridge.annotations.SqaleSubCharacteristic;
 
+import javax.annotation.Nullable;
+
 import java.util.List;
 
 @Rule(
@@ -49,7 +51,7 @@
 public class AbstractClassNoFieldShouldBeInterfaceCheck extends IssuableSubscriptionVisitor implements JavaVersionAwareVisitor {
 
   @Override
-  public boolean isCompatibleWithJavaVersion(Integer version) {
+  public boolean isCompatibleWithJavaVersion(@Nullable Integer version) {
     return JavaVersionHelper.java8Compatible(version);
   }
 

java-checks/src/main/java/org/sonar/java/checks/DiamondOperatorCheck.java

@@ -47,6 +47,7 @@
 import org.sonar.squidbridge.annotations.SqaleSubCharacteristic;
 
 import javax.annotation.CheckForNull;
+import javax.annotation.Nullable;
 
 import java.util.List;
 
@@ -61,7 +62,7 @@
 public class DiamondOperatorCheck extends SubscriptionBaseVisitor implements JavaVersionAwareVisitor {
 
   @Override
-  public boolean isCompatibleWithJavaVersion(Integer version) {
+  public boolean isCompatibleWithJavaVersion(@Nullable Integer version) {
     return JavaVersionHelper.java7Compatible(version);
   }
 

java-checks/src/main/java/org/sonar/java/checks/FileCreateTempFileCheck.java

@@ -78,7 +78,7 @@ private enum State {
   private JavaFileScannerContext context;
 
   @Override
-  public boolean isCompatibleWithJavaVersion(Integer version) {
+  public boolean isCompatibleWithJavaVersion(@Nullable Integer version) {
     return JavaVersionHelper.java7Compatible(version);
   }
 

java-checks/src/main/java/org/sonar/java/checks/LambdaOptionalParenthesisCheck.java

@@ -33,6 +33,8 @@
 import org.sonar.squidbridge.annotations.SqaleConstantRemediation;
 import org.sonar.squidbridge.annotations.SqaleSubCharacteristic;
 
+import javax.annotation.Nullable;
+
 import java.util.List;
 
 
@@ -52,7 +54,7 @@ public List<Tree.Kind> nodesToVisit() {
   }
 
   @Override
-  public boolean isCompatibleWithJavaVersion(Integer version) {
+  public boolean isCompatibleWithJavaVersion(@Nullable Integer version) {
     return JavaVersionHelper.java8Compatible(version);
   }
 

java-checks/src/main/java/org/sonar/java/checks/LambdaSingleExpressionCheck.java

@@ -36,6 +36,8 @@
 import org.sonar.squidbridge.annotations.SqaleConstantRemediation;
 import org.sonar.squidbridge.annotations.SqaleSubCharacteristic;
 
+import javax.annotation.Nullable;
+
 import java.util.List;
 
 @Rule(
@@ -50,7 +52,7 @@
 public class LambdaSingleExpressionCheck extends IssuableSubscriptionVisitor implements JavaVersionAwareVisitor {
 
   @Override
-  public boolean isCompatibleWithJavaVersion(Integer version) {
+  public boolean isCompatibleWithJavaVersion(@Nullable Integer version) {
     return JavaVersionHelper.java8Compatible(version);
   }
 

java-checks/src/main/java/org/sonar/java/checks/SAMAnnotatedCheck.java

@@ -45,6 +45,8 @@
 import org.sonar.squidbridge.annotations.SqaleConstantRemediation;
 import org.sonar.squidbridge.annotations.SqaleSubCharacteristic;
 
+import javax.annotation.Nullable;
+
 import java.util.List;
 
 @Rule(
@@ -70,7 +72,7 @@ public class SAMAnnotatedCheck extends IssuableSubscriptionVisitor implements Ja
     build();
 
   @Override
-  public boolean isCompatibleWithJavaVersion(Integer version) {
+  public boolean isCompatibleWithJavaVersion(@Nullable Integer version) {
     return JavaVersionHelper.java8Compatible(version);
   }