Operators

• [Post-unary operators](postunary operators)

Normal Operands

• The “==” Operator compares the memory locations, which is never same for different objects whereas equals() compares the contents
• By contract, if two objects are equivalent according to the equals() method, then the hashCode() method must evaluate them to be ==.
• The “=” operand will get its meaning the first time used if a string starts before the operand then concat will be done otherwise a mathematical +. If digit starts and finish with string then the last “+” will concat all the rest will be mathematical +.
• The ++i increments i by one and returns the new value
• The i++ increments i by one but returns the old value

int i = 5;
System.out.println(++i); //i is now 6 and Prints 6
System.out.println(i++); //i is now 7 but Prints 6

Bitwise Operands

Using the bitwise operator can circumvent short-circuiting behavior: boolean b = booleanExpression1() && booleanExpression2(); boolean b = booleanExpression1() & booleanExpression2(); If booleanExpression1() evaluates to false, then booleanExpression2() is not evaluated in the first case, and booleanExpression2() (and whatever side-effects it may have) is evaluated in the second case,

• X & Y is bitwise AND
• X | Y is bitwise OR
• X ^ Y is bitwise XOR