java exception thrown ?

Hello everyone , i was tring to make a program with sensor and chatbox but i have the java exception thrown.
what does it mean?

Here is the program

sensor = peripheral.wrap("top")
s = peripheral.wrap("right")

while true do
for _, name in pairs(sensor.getPlayerByName()) do
  if name =="Myribox" then
   s.speak("Hello..name..")
  else
  s.speak("Out of here")
  end
sleep(0)
end
end

Sorry for my bad english

Some peripherals don't check that the correct arguments are passed to their functions, causing Java Errors.
( In newer versions of CC, it tells you the error too - You are using CC 1.5 right? )

It is likely the 'sensor' or Chat Box causing the error. My best guess is this line:

for _, name in pairs(sensor.getPlayerByName()) do

I BELIEVE its 'getPlayersByName()' (add an 's' after 'Player')
But I can't be sure, since I have no idea which sensor you are using. Which mod is it from?

Though it could be the Chat Box. Try '.say' instead of '.speak'
( Is this the mod you are using for the Chat Box? )

Also, you have a few minor problems in your code:

Spoiler

sensor = peripheral.wrap("top")
chat = peripheral.wrap("right") --# 'chat' is more descriptive than 's'

while true do

  for _ , name in pairs( sensor.getPlayersByName() ) do

	if name == "Myribox" then
	  chat.say("Hello "..name) --# Slight problem with concatenation (Google it if you are confused)
	else
	  chat.say("Leave!") --# I guess this is the same as 'out of here'
	end

  end

  sleep(1) --# The sleep should be OUTSIDE of the for-loop, and doesn't need to be shorter than 1 second

end

Thanks for you help, but the code

for _ , name in pairs( sensor.getPlayerByName() ) do

is correct.
I stil have the same error

For the Sensor i'm using open perihperal
-OpenPeripheralAddons-1.7.10-0.3.1b
-OpenPeripheralCore-1.7.10-1.1.1
-OpenPeripheralIntegration-1.7.10-0.2.2

And for the Speaker its -Peripherals++-1.2.10

and CC its Comptercraft.1.73

Hm CC 1.73 should tell you the exact error, but it doesn't really matter.


According to this page, the Sensor's 'getPlayerByName()' function ALSO requires a name - It doesn't get the names of all players in range, rather info about a single player.
(Not passing the name could cause a Java error)

The function you are likely looking for is 'getPlayers()'