++: This is a java operator for increasing the value by 1.  An expression that uses increment operators is a statement itself. That is because the ++ operator is also a type of assignment operator because it changes the value of the variable it applies to.  The main function of this operator is to increase the value by 1.  

&&:  This is a Boolean operator in Java that represents the “and” operator. The && operator is a logical AND operator. It returns true if both the statements are true.   

!= :  This is a relational operator. This shows that any given value is not equal to the other value.  Example :  x != y ; here x is not equal to y.   

%=: The %= operator performs modulus division on a variable with a literal or another variable and returns the result into the variable on the left of the operator.