An operator is a symbol that operates on one or more arguments to produce a result. The Hello World program is so simple it doesn't use any operators, but almost all other programs you write will.
| Operator | Purpose |
|---|---|
+ | addition of numbers, concatenation of Strings |
+= | add and assign numbers, concatenate and assign Strings |
- | subtraction |
-= | subtract and assign |
* | multiplication |
*= | multiply and assign |
/ | division |
/= | divide and assign |
% | take remainder |
%= | take remainder and assign |
++ | increment by one |
-- | decrement by one |
> | greater than |
>= | greater than or equal to |
< | less than |
<= | less than or equal to |
! | boolean NOT |
!= | not equal to |
&& | boolean AND |
|| | boolean OR |
== | boolean equals |
= | assignment |
~ | bitwise NOT |
?: | conditional |
instanceof | type checking |
| | bitwise OR |
|= | bitwise OR and assign |
^ | bitwise XOR |
^= | bitwise XOR and assign |
& | bitwise AND |
&= | bitwise AND and assign |
>> | shift bits right with sign extension |
>>= | shift bits right with sign extension and assign |
<< | shift bits left |
<<= | shift bits left and assign |
>>> | unsigned bit shift right |
>>>= | unsigned bit shift right and assign |
