Text under the Name

Hello, I tried to put a text , in my case Admin under the name of ops like this:

Code:java

if(event.getPlayer().isOp()) {
int lenght = event.getPlayer().getName().length()-16;
String endstring = "";
if(event.getPlayer().getName().length() != 16) {
for (int i = 0; i > lenght; i++) {
endstring = endstring + " ";
}
} else {
endstring = "";
}
event.getPlayer().setDisplayName(event.getPlayer().getDisplayName()+endstring+"Admin");
}

But if i use this code in my PlayerJoinEvent ops are stuck at loading terrain.

Please help

#Edit 1

I now use scoreboard but can I get rid of the 0?

Please i need help fast

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

I now use scoreboard but can I get rid of the 0?

 

You can't get rid of that 0 at the bottom. Why not create admin levels or something?