PaperMC/paper-server/nms-patches/net/minecraft/world/entity/animal/EntityOcelot.patch

--- a/net/minecraft/world/entity/animal/EntityOcelot.java
+++ b/net/minecraft/world/entity/animal/EntityOcelot.java
@@ -177,7 +177,7 @@
         if ((this.temptGoal == null || this.temptGoal.isRunning()) && !this.isTrusting() && this.isFood(itemstack) && entityhuman.distanceToSqr((Entity) this) < 9.0D) {
             this.usePlayerItem(entityhuman, enumhand, itemstack);
             if (!this.level().isClientSide) {
-                if (this.random.nextInt(3) == 0) {
+                if (this.random.nextInt(3) == 0 && !org.bukkit.craftbukkit.event.CraftEventFactory.callEntityTameEvent(this, entityhuman).isCancelled()) { // CraftBukkit - added event call and isCancelled check
                     this.setTrusting(true);
                     this.spawnTrustingParticles(true);
                     this.level().broadcastEntityEvent(this, (byte) 41);
@@ -308,10 +308,10 @@
         private final EntityOcelot ocelot;
 
         public a(EntityOcelot entityocelot, Class<T> oclass, float f, double d0, double d1) {
-            Predicate predicate = IEntitySelector.NO_CREATIVE_OR_SPECTATOR;
+            // Predicate predicate = IEntitySelector.NO_CREATIVE_OR_SPECTATOR; // CraftBukkit - decompile error
 
-            Objects.requireNonNull(predicate);
-            super(entityocelot, oclass, f, d0, d1, predicate::test);
+            // Objects.requireNonNull(predicate); // CraftBukkit - decompile error
+            super(entityocelot, oclass, f, d0, d1, IEntitySelector.NO_CREATIVE_OR_SPECTATOR::test); // CraftBukkit - decompile error
             this.ocelot = entityocelot;
         }