Compare Substring With String?

Why isn't it working?

Java Code:

if ((line.substring(i,i+2)) == "go")
break; mh_sh_highlight_all('java');

I printed this to check if substring works fine, used this:

Java Code: System.out.println(line.substring(i,i+2) + " : "+ length); mh_sh_highlight_all('java');

So, output:

Er : 1

ra : 2

ag : 3

go : 4

on : 5

n' : 6

'> : 7

Line:

String line = "Eragon'>";

Shouldn't it break loop after printing "go : 4"?

line.substring(i,i+2) prints go here. But if doesn't work.