CP1344: PROGRAMMING IN JAVA LECTURE -13-OPERATOR & EXPRESSION-RELATIONAL & LOGICAL OPERATOR-BCA-S3.

Relational Operators
We often compare two quantities, and depending on their relation, take certain decisions. For example,
we may compare the age of two persons, or the price of two items, and so on. These comparisons can be done with the help of relational operators. We have already used the symbol “" meaning less than. An expression such as
ab or x 20
containing a relational operator is termed as a relational expression. The value of relational expression
is either true or false,
Java supports six relational operators in all. When arithmetic expressions are used on cither side of a relational operator, the arithmetic expressions will be evaluated first and then the results compared, That is, arithmetic operators have a higher priority over relational operators.

Logical Operators
In addition to the relational operators, Java has three logical operators, it is used to combine two or more relational expressions.
Operator Description Example
|| conditional-OR: true if either of the boolean expression is true false || true is evaluated to true
&& conditional-AND: true if all boolean expressions are true false && true is evaluated to false
! Logical Not Logical NOT is a Unary Operator, it operates on single operands. It reverses the value of operands, if the value is true, then it gives false, and if it is false, then it gives true.