Adding Lines to Name-Tags

ok so how would i make it show everyone's health to everyone?

 

This would do the trick. But it won't live update you will have to send a SetScoreboardScore packet to everyone when a player's health changes.

Code:java

 
String name = "%";//the string next to the name
 
Scoreboard sb = new Scoreboard();//Create new scoreboard
sb.registerObjective(name, new ScoreboardBaseCriteria(name));//regester new objective
 
Packet206SetScoreboardObjective packet = new Packet206SetScoreboardObjective(sb.getObjective(name), 0);//Create Scoreboard create packet
Packet208SetScoreboardDisplayObjective display = new Packet208SetScoreboardDisplayObjective(2, sb.getObjective(name));//Create display packet set to under name mode
 
for(Player player : Bukkit.getOnlinePlayers()){//send to all the players on the server
sendPacket(player, packet);//Send Scoreboard create packet
sendPacket(player, display);//Send the display packet
 
for(Player player2 : Bukkit.getOnlinePlayers()){
ScoreboardScore health = sb.getPlayerScoreForObjective(player2.getName(), sb.getObjective(name));//Create a new item with the players name
health.setScore(player2.getHealth());//this will set the integer under to the player's name to their health.
Packet207SetScoreboardScore pHealth = new Packet207SetScoreboardScore(health, 0);//Create score packet 1
sendPacket(player, pHealth);//Send score update packet
}
}