nullpointerexception - Null Point Exception in Java -

i having weird problem in code, when execute code first if condition, works fine , excpected. however, when comment if statement , use other if condition (the 1 commented ), gives npe. both getuserip() , getphonenumber() normal getters private strings. , both values being set before normal setters. idea why happening ? thanks.

public void sendbroadcast(final string broadcast) {     system.out.println("entered sendbroadcast");          string fullpeep=broadcast;         system.out.println("fullpeep: "+fullpeep);         string array[] = fullpeep.split("<!!>");          for(user tempuser: friends)         {             if(tempuser.getuserip().equals(this.getuserip()))             {             system.out.println("tempuser:" +tempuser.getphonenumber() + " user: "+array[1] );             //if(tempuser.getphonenumber().equals(array[1]))             //{                 system.out.println("tempuser:" +tempuser.getphonenumber() + " user: "+array[1] );                 system.out.println("if statemnt of broadcast method");              try {                 dataoutputstream out2= new dataoutputstream(socket.getoutputstream());                 out2=tempuser.getuserdataoutputstream();                 out2.writeutf(fullpeep+"\n");                 out2.flush();             } catch (ioexception e) {                 e.printstacktrace();             }             }             //}         }    }   exception in thread "thread-6" java.lang.nullpointerexception @ user.sendbroadcast(user.java:180) @ server$serverthread.run(server.java:394) 

edit: figured out causing exception , why tempuser.getphonenumber() returning null @ point. all.

change:

if(tempuser.getphonenumber().equals(array[1])) 

to:

if(java.util.objects.equals(tempuser.getphonenumber(), array[1])) 

objects.equals null-safe , not mind when phone number null.