How do I make only the player who place the block can break the Block?

I dont know the problem is that I used the wrong method to get the name of the player who placed the block or that I used the canHarvestBlock in a wrong way.

I am very new to this !

 

This is the onBlockPlacedBy and canHarvestBlock:

	@Override
	public void onBlockPlacedBy(World worldIn, BlockPos pos, BlockState state, LivingEntity placer, ItemStack stack) {
		if(placer instanceof PlayerEntity) {
			permission = placer.getName().toString();
		}
	}	
	
	@Override
	public boolean canHarvestBlock(BlockState state, IBlockReader world, BlockPos pos, PlayerEntity player) {
		if(player.getName().getString() == permission) {
			return state.getBlock().canHarvestBlock(state, world, pos, player);
		}
		return false;
	}

Permission variable: 

public static String permission = null;

 

EDIT: I solve the problem above but now my problem is that I the method I used was wrong! I don't know what method should I use in order to not let player to break the block

Edited November 11, 20204 yr by AustinTan
new update

You're trying to give a singleton a changing state. You need to add a tile entity and store the data there to do your checks.

Sorry for the late reply!
Now that I store the data in the title entity and then I realized that I used the wrong method for what I am trying to do I want to set so that the player cannot break the block not cannot get the block after it break do you know what method should I use? Because I don't and I've been searching for quite sometime and I still have no idea!

28 minutes ago, diesieben07 said:

You need to subscribe to PlayerEvent.BreakSpeed and set the speed to 0 if you want it to be unminable.

I used this but it's still the same what did I do wrong?

event.setNewSpeed(0);

EDIT: it worked I fixed it Thanks you!

Edited November 11, 20204 yr by AustinTan