Whata different between if(password.equals("123456") and if(password=="123456") and when should use ==

Answer 1

equals is a method in Sting class which compares the exact characters where as == compares address of the two objects

Answer 2

can anyone give me example for == compare?.

Answer 3

== is used to compare int, double... while equals is used to compare strings.

e.g.:
String a = "abc";
if(a.equals("abc")){
System.out.println("equals");
}
else{
System.out.println("not equal");
}
Output: equals

e.g.:
int a = 123;
if(a==123){
System.out.println("equals");
}
else{
System.out.println("not equal");
}
Output: equals

not sure of the reason but if == is used to compare strings, it will give inaccurate results

Answer 4

==compare the reference 😉

Answer 5

full answer here:
http://stackoverflow.com/questions/7520432/what-is-the-difference-between-vs-equals-in-java