Why is one true and one false?

Main.java B saved 1 class Main public static void main(String[] args) { Integer[] foo = {1088, 289, 1800, 10); Integer[] Iarray = {0,10,e); Open JDK Runtime Environment (build 10.0.2113-Ubuntu-labuntis 0.18.04.4) >javac -classpath ./run dir/unit-4.12.jard . Main.java > Java -classpath : /run dir/unit-4.12.jar Main true false > System.out.println(Iarray[@]== Iarray[2]); System.out.println(foo[@]==foo[2])