remove redundant null checks, remove some static fields

Mage.Client/src/main/java/mage/client/util/Config.java

@@ -33,8 +33,8 @@ public final class Config {
 
     static {
         Properties p = new Properties();
-        try {
+        try(FileInputStream fis =new FileInputStream(new File("config/config.properties"))) {
-            p.load(new FileInputStream(new File("config/config.properties")));
+            p.load(fis);
         } catch (IOException ex) {
             logger.fatal("Config error ", ex);
         }

Mage.Sets/src/mage/cards/b/BlowflyInfestation.java

@@ -55,7 +55,7 @@ public final class BlowflyInfestation extends CardImpl {
 
 class BlowflyInfestationCondition implements Condition {
 
-    private static Permanent permanent;
+    private Permanent permanent;
 
     @Override
     public boolean apply(Game game, Ability source) {

Mage.Sets/src/mage/cards/i/IceCauldron.java

@@ -158,7 +158,7 @@ class IceCauldronCastFromExileEffect extends AsThoughEffectImpl {
 
 class IceCauldronNoteManaEffect extends OneShotEffect {
 
-    private static String manaUsedString;
+    private String manaUsedString;
 
     public IceCauldronNoteManaEffect() {
         super(Outcome.Benefit);
@@ -167,6 +167,7 @@ class IceCauldronNoteManaEffect extends OneShotEffect {
 
     public IceCauldronNoteManaEffect(final IceCauldronNoteManaEffect effect) {
         super(effect);
+        manaUsedString = effect.manaUsedString;
     }
 
     @Override
@@ -190,8 +191,8 @@ class IceCauldronNoteManaEffect extends OneShotEffect {
 
 class IceCauldronAddManaEffect extends ManaEffect {
 
-    private static Mana storedMana;
+    private Mana storedMana;
-    private static MageObjectReference exiledCardMor;
+    private MageObjectReference exiledCardMor;
 
     IceCauldronAddManaEffect() {
         super();
@@ -200,6 +201,8 @@ class IceCauldronAddManaEffect extends ManaEffect {
 
     IceCauldronAddManaEffect(IceCauldronAddManaEffect effect) {
         super(effect);
+        storedMana = effect.storedMana.copy();
+        exiledCardMor = effect.exiledCardMor;
     }
 
     @Override

Mage.Sets/src/mage/cards/j/JeweledAmulet.java

@@ -60,7 +60,7 @@ public final class JeweledAmulet extends CardImpl {
 
 class JeweledAmuletAddCounterEffect extends OneShotEffect {
 
-    private static String manaUsedString;
+    private String manaUsedString;
 
     public JeweledAmuletAddCounterEffect() {
         super(Outcome.Benefit);
@@ -69,6 +69,7 @@ class JeweledAmuletAddCounterEffect extends OneShotEffect {
 
     public JeweledAmuletAddCounterEffect(final JeweledAmuletAddCounterEffect effect) {
         super(effect);
+        manaUsedString = effect.manaUsedString;
     }
 
     @Override
@@ -93,7 +94,7 @@ class JeweledAmuletAddCounterEffect extends OneShotEffect {
 
 class JeweledAmuletAddManaEffect extends ManaEffect {
 
-    private static Mana storedMana;
+    private Mana storedMana;
 
     JeweledAmuletAddManaEffect() {
         super();
@@ -102,6 +103,7 @@ class JeweledAmuletAddManaEffect extends ManaEffect {
 
     JeweledAmuletAddManaEffect(JeweledAmuletAddManaEffect effect) {
         super(effect);
+        storedMana = effect.storedMana;
     }
 
     @Override

Mage.Sets/src/mage/cards/m/MagesContest.java

@@ -68,7 +68,7 @@ class MagesContestEffect extends OneShotEffect {
                 Player winner = you;
                 Player currentPlayer = spellController;
                 do {
-                    if (currentPlayer != null && currentPlayer.canRespond()) {
+                    if (currentPlayer.canRespond()) {
                         int newBid = 0;
                         if (!currentPlayer.isHuman()) {
                             // make AI evaluate value of the spell to decide on bidding, should be reworked

Mage.Sets/src/mage/cards/p/ProtectiveSphere.java

@@ -52,8 +52,8 @@ public final class ProtectiveSphere extends CardImpl {
 class ProtectiveSphereEffect extends PreventionEffectImpl {
 
     private final TargetSource target;
-    private static Mana manaUsed;
+    private Mana manaUsed;
-    private static List<ObjectColor> colorsOfChosenSource = new ArrayList<>();
+    private List<ObjectColor> colorsOfChosenSource = new ArrayList<>();
 
     public ProtectiveSphereEffect() {
         super(Duration.EndOfTurn, Integer.MAX_VALUE, false, false);
@@ -64,6 +64,8 @@ class ProtectiveSphereEffect extends PreventionEffectImpl {
     public ProtectiveSphereEffect(final ProtectiveSphereEffect effect) {
         super(effect);
         this.target = effect.target.copy();
+        manaUsed = effect.manaUsed.copy();
+        colorsOfChosenSource = effect.colorsOfChosenSource;
     }
 
     @Override

Mage.Sets/src/mage/cards/s/ScribNibblers.java

@@ -75,7 +75,7 @@ class ScribNibblersEffect extends OneShotEffect {
         if (targetPlayer != null && targetPlayer.getLibrary().hasCards()) {
             Card card = targetPlayer.getLibrary().getFromTop(game);
             card.moveToExile(id, "Scrib Nibblers Exile", source.getSourceId(), game);
-            if (card != null && card.isLand()) {
+            if (card.isLand()) {
                 you.gainLife(1, game, source);
                 return true;
             }

Mage.Sets/src/mage/cards/w/WordOfCommand.java

@@ -98,7 +98,7 @@ class WordOfCommandEffect extends OneShotEffect {
 
             // You control that player until Word of Command finishes resolving
             controller.controlPlayersTurn(game, targetPlayer.getId());
-            while (controller != null && controller.canRespond()) {
+            while (controller.canRespond()) {
                 if (controller.chooseUse(Outcome.Benefit, "Resolve " + sourceObject.getLogName() + " now" + (card != null ? " and play " + card.getLogName() : "") + '?', source, game)) {
                     // this is used to give the controller a little space to utilize his player controlling effect (look at face down creatures, hand, etc.)
                     break;

Mage/src/main/java/mage/abilities/common/ActivateIfConditionActivatedAbility.java

@@ -10,7 +10,6 @@ import mage.constants.Zone;
 import mage.game.Game;
 
 /**
- *
  * @author LevelX2
  */
 public class ActivateIfConditionActivatedAbility extends ActivatedAbilityImpl {
@@ -37,15 +36,12 @@ public class ActivateIfConditionActivatedAbility extends ActivatedAbilityImpl {
         } else {
             sb.append(" Activate this ability only ");
         }
-        if (condition.toString() != null) {
+        if (!condition.toString().startsWith("during")
-            if (!condition.toString().startsWith("during")
+                && !condition.toString().startsWith("before")) {
-                    && !condition.toString().startsWith("before")) {
+            sb.append("if ");
-                sb.append("if ");
-            }
-            sb.append(condition.toString()).append('.');
-        } else {
-            sb.append(" [Condition toString() == null] ");
         }
+        sb.append(condition.toString()).append('.');
+
         return sb.toString();
     }
 

Mage/src/main/java/mage/abilities/common/DiesAttachedTriggeredAbility.java

@@ -62,41 +62,40 @@ public class DiesAttachedTriggeredAbility extends TriggeredAbilityImpl {
         if (((ZoneChangeEvent) event).isDiesEvent()) {
             ZoneChangeEvent zEvent = (ZoneChangeEvent) event;
             boolean triggered = false;
-            if (zEvent != null) {
+            if (zEvent.getTarget() != null && zEvent.getTarget().getAttachments() != null && zEvent.getTarget().getAttachments().contains(this.getSourceId())) {
-                if (zEvent.getTarget() != null && zEvent.getTarget().getAttachments() != null && zEvent.getTarget().getAttachments().contains(this.getSourceId())) {
+                triggered = true;
-                    triggered = true;
+            } else {
-                } else {
+                // If both (attachment and attached went to graveyard at the same time, the attachemnets can be already removed from the attached object.)
-                    // If both (attachment and attached went to graveyard at the same time, the attachemnets can be already removed from the attached object.)
+                // So check here with the LKI of the enchantment
-                    // So check here with the LKI of the enchantment
+                Permanent attachment = game.getPermanentOrLKIBattlefield(getSourceId());
-                    Permanent attachment = game.getPermanentOrLKIBattlefield(getSourceId());
+                if (attachment != null
-                    if (attachment != null
+                        && zEvent.getTargetId() != null && attachment.getAttachedTo() != null
-                            && zEvent.getTargetId() != null && attachment.getAttachedTo() != null
+                        && zEvent.getTargetId().equals(attachment.getAttachedTo())) {
-                            && zEvent.getTargetId().equals(attachment.getAttachedTo())) {
+                    Permanent attachedTo = game.getPermanentOrLKIBattlefield(attachment.getAttachedTo());
-                        Permanent attachedTo = game.getPermanentOrLKIBattlefield(attachment.getAttachedTo());
+                    if (attachedTo != null
-                        if (attachedTo != null
+                            && attachment.getAttachedToZoneChangeCounter() == attachedTo.getZoneChangeCounter(game)) {  // zoneChangeCounter is stored in Permanent
-                                && attachment.getAttachedToZoneChangeCounter() == attachedTo.getZoneChangeCounter(game)) {  // zoneChangeCounter is stored in Permanent
+                        triggered = true;
-                            triggered = true;
-                        }
                     }
                 }
-                if (triggered) {
+            }
-                    for (Effect effect : getEffects()) {
+            if (triggered) {
-                        if (zEvent.getTarget() != null) {
+                for (Effect effect : getEffects()) {
-                            effect.setValue("attachedTo", zEvent.getTarget());
+                    if (zEvent.getTarget() != null) {
-                            if (setTargetPointer == SetTargetPointer.ATTACHED_TO_CONTROLLER) {
+                        effect.setValue("attachedTo", zEvent.getTarget());
-                                Permanent attachment = game.getPermanentOrLKIBattlefield(getSourceId());
+                        if (setTargetPointer == SetTargetPointer.ATTACHED_TO_CONTROLLER) {
-                                if (attachment != null && attachment.getAttachedTo() != null) {
+                            Permanent attachment = game.getPermanentOrLKIBattlefield(getSourceId());
-                                    Permanent attachedTo = (Permanent) game.getLastKnownInformation(attachment.getAttachedTo(), Zone.BATTLEFIELD, attachment.getAttachedToZoneChangeCounter());
+                            if (attachment != null && attachment.getAttachedTo() != null) {
-                                    if (attachedTo != null) {
+                                Permanent attachedTo = (Permanent) game.getLastKnownInformation(attachment.getAttachedTo(), Zone.BATTLEFIELD, attachment.getAttachedToZoneChangeCounter());
-                                        effect.setTargetPointer(new FixedTarget(attachedTo.getControllerId()));
+                                if (attachedTo != null) {
-                                    }
+                                    effect.setTargetPointer(new FixedTarget(attachedTo.getControllerId()));
                                 }
                             }
                         }
                     }
-                    return true;
                 }
+                return true;
             }
+
         }
         return false;
     }

Mage/src/main/java/mage/abilities/effects/common/RollPlanarDieEffect.java

@@ -76,7 +76,7 @@ public class RollPlanarDieEffect extends OneShotEffect {
                 for (int i = 0; i < chaosEffects.size(); i++) {
                     Effect effect = chaosEffects.get(i);
                     Target target = null;
-                    if (chaosTargets != null && chaosTargets.size() > i) {
+                    if (chaosTargets.size() > i) {
                         target = chaosTargets.get(i);
                     }
                     boolean done = false;

Mage/src/main/java/mage/game/command/planes/AcademyAtTolariaWestPlane.java

@@ -88,10 +88,8 @@ class DrawCardsActivePlayerEffect extends OneShotEffect {
         if (cPlane == null) {
             return false;
         }
-        if (cPlane != null) {
+        if (!cPlane.getName().equalsIgnoreCase("Plane - Academy at Tolaria West")) {
-            if (!cPlane.getName().equalsIgnoreCase("Plane - Academy at Tolaria West")) {
+            return false;
-                return false;
-            }
         }
         Player player = game.getPlayer(game.getActivePlayerId());
         if (player != null) {

Mage/src/main/java/mage/game/command/planes/AstralArenaPlane.java

@@ -81,10 +81,8 @@ class AstralArenaAttackRestrictionEffect extends RestrictionEffect {
         if (cPlane == null) {
             return false;
         }
-        if (cPlane != null) {
+        if (!cPlane.getName().equalsIgnoreCase("Plane - Astral Arena")) {
-            if (!cPlane.getName().equalsIgnoreCase("Plane - Astral Arena")) {
+            return false;
-                return false;
-            }
         }
 
         return true;
@@ -118,10 +116,8 @@ class AstralArenaBlockRestrictionEffect extends RestrictionEffect {
         if (cPlane == null) {
             return false;
         }
-        if (cPlane != null) {
+        if (!cPlane.getName().equalsIgnoreCase("Plane - Astral Arena")) {
-            if (!cPlane.getName().equalsIgnoreCase("Plane - Astral Arena")) {
+            return false;
-                return false;
-            }
         }
         return true;
     }

Mage/src/main/java/mage/game/command/planes/EdgeOfMalacolPlane.java

@@ -101,10 +101,8 @@ class EdgeOfMalacolEffect extends ContinuousRuleModifyingEffectImpl {
             if (cPlane == null) {
                 return false;
             }
-            if (cPlane != null) {
+            if (!cPlane.getName().equalsIgnoreCase("Plane - Edge of Malacol")) {
-                if (!cPlane.getName().equalsIgnoreCase("Plane - Edge of Malacol")) {
+                return false;
-                    return false;
-                }
             }
             Permanent permanent = game.getPermanent(event.getTargetId());
             if (permanent != null && filter.match(permanent, game) && Objects.equals(permanent.getControllerId(), game.getActivePlayerId())) {

Mage/src/main/java/mage/game/command/planes/FeedingGroundsPlane.java

@@ -79,7 +79,7 @@ class FeedingGroundsEffect extends CostModificationEffectImpl {
                 new ColorPredicate(ObjectColor.GREEN)));
     }
 
-    private static final String rule = "Red spells cost {1} less to cast.  Green spells cost {1} less to cast.";
+    private static final String rule = "Red spells cost {1} less to cast. Green spells cost {1} less to cast.";
     private int amount = 1;
 
     public FeedingGroundsEffect() {
@@ -133,19 +133,17 @@ class FeedingGroundsEffect extends CostModificationEffectImpl {
             if (cPlane == null) {
                 return false;
             }
-            if (cPlane != null) {
+            if (!cPlane.getName().equalsIgnoreCase("Plane - Feeding Grounds")) {
-                if (!cPlane.getName().equalsIgnoreCase("Plane - Feeding Grounds")) {
+                return false;
-                    return false;
-                }
             }
 
             Spell spell = (Spell) game.getStack().getStackObject(abilityToModify.getId());
             if (spell != null) {
-                return this.filter.match(spell, game) && selectedByRuntimeData(spell, source, game);
+                return filter.match(spell, game) && selectedByRuntimeData(spell, source, game);
             } else {
                 // used at least for flashback ability because Flashback ability doesn't use stack
                 Card sourceCard = game.getCard(abilityToModify.getSourceId());
-                return sourceCard != null && this.filter.match(sourceCard, game) && selectedByRuntimeData(sourceCard, source, game);
+                return sourceCard != null && filter.match(sourceCard, game) && selectedByRuntimeData(sourceCard, source, game);
             }
         }
         return false;

Mage/src/main/java/mage/game/command/planes/HedronFieldsOfAgadeemPlane.java

@@ -95,10 +95,8 @@ class HedronFieldsOfAgadeemRestrictionEffect extends RestrictionEffect {
         if (cPlane == null) {
             return false;
         }
-        if (cPlane != null) {
+        if (!cPlane.getName().equalsIgnoreCase("Plane - Hedron Fields of Agadeem")) {
-            if (!cPlane.getName().equalsIgnoreCase("Plane - Hedron Fields of Agadeem")) {
+            return false;
-                return false;
-            }
         }
         return filter.match(permanent, source.getSourceId(), source.getControllerId(), game);
     }

Mage/src/main/java/mage/game/command/planes/TheEonFogPlane.java

@@ -87,10 +87,8 @@ class TheEonFogSkipUntapStepEffect extends ContinuousRuleModifyingEffectImpl {
         if (cPlane == null) {
             return false;
         }
-        if (cPlane != null) {
+        if (!cPlane.getName().equalsIgnoreCase("Plane - The Eon Fog")) {
-            if (!cPlane.getName().equalsIgnoreCase("Plane - The Eon Fog")) {
+            return false;
-                return false;
-            }
         }
         return event.getType() == GameEvent.EventType.UNTAP_STEP;
     }

Mage/src/main/java/mage/game/command/planes/TheGreatForestPlane.java

@@ -86,10 +86,8 @@ class TheGreatForestCombatDamageRuleEffect extends ContinuousEffectImpl {
         if (cPlane == null) {
             return false;
         }
-        if (cPlane != null) {
+        if (!cPlane.getName().equalsIgnoreCase("Plane - The Great Forest")) {
-            if (!cPlane.getName().equalsIgnoreCase("Plane - The Great Forest")) {
+            return false;
-                return false;
-            }
         }
 
         // Change the rule

Mage/src/main/java/mage/game/command/planes/TrailOfTheMageRingsPlane.java

@@ -101,10 +101,8 @@ class TrailOfTheMageRingsReboundEffect extends ContinuousEffectImpl {
         if (cPlane == null) {
             return false;
         }
-        if (cPlane != null) {
+        if (!cPlane.getName().equalsIgnoreCase("Plane - Trail of the Mage-Rings")) {
-            if (!cPlane.getName().equalsIgnoreCase("Plane - Trail of the Mage-Rings")) {
+            return false;
-                return false;
-            }
         }
 
         for (UUID playerId : game.getPlayers().keySet()) {

Mage/src/main/java/mage/game/command/planes/TurriIslandPlane.java

@@ -114,19 +114,17 @@ class TurriIslandEffect extends CostModificationEffectImpl {
             if (cPlane == null) {
                 return false;
             }
-            if (cPlane != null) {
+            if (!cPlane.getName().equalsIgnoreCase("Plane - Turri Island")) {
-                if (!cPlane.getName().equalsIgnoreCase("Plane - Turri Island")) {
+                return false;
-                    return false;
-                }
             }
 
             Spell spell = (Spell) game.getStack().getStackObject(abilityToModify.getId());
             if (spell != null) {
-                return this.filter.match(spell, game) && selectedByRuntimeData(spell, source, game);
+                return filter.match(spell, game) && selectedByRuntimeData(spell, source, game);
             } else {
                 // used at least for flashback ability because Flashback ability doesn't use stack
                 Card sourceCard = game.getCard(abilityToModify.getSourceId());
-                return sourceCard != null && this.filter.match(sourceCard, game) && selectedByRuntimeData(sourceCard, source, game);
+                return sourceCard != null && filter.match(sourceCard, game) && selectedByRuntimeData(sourceCard, source, game);
             }
         }
         return false;

Mage/src/main/java/mage/game/command/planes/UndercityReachesPlane.java

@@ -96,10 +96,8 @@ class UndercityReachesTriggeredAbility extends TriggeredAbilityImpl {
         if (cPlane == null) {
             return false;
         }
-        if (cPlane != null) {
+        if (!cPlane.getName().equalsIgnoreCase("Plane - Undercity Reaches")) {
-            if (!cPlane.getName().equalsIgnoreCase("Plane - Undercity Reaches")) {
+            return false;
-                return false;
-            }
         }
 
         if (((DamagedPlayerEvent) event).isCombatDamage()) {