Java - Operator Equality Operator ==

What is Equality Operator"

The equality operator (==) is used in the form

operand1 == operand2

The equality operator tests two operands for equality.

It uses the following rules:

Both operands must be either primitive type or reference type.
Mixed operands types are not allowed and results in a compile-time error.
A mix of numeric and boolean types is not allowed.
If both operands must be either numeric or boolean.
For primitive operands, it returns true if the both operands represent the same value; otherwise, it returns false.
For reference operands, it returns true if the both operands refer to the same object in memory; otherwise it returns false.

Suppose there is an int variable i.

int i = 10;

i == 10 tests whether i is equal to 10. i == 10 will evaluate to true.