Java Operators Quiz

Binary Operators

• The binary operator AND (&) evaluates to true only when both operands have a true value.
• The binary operator OR (|) evaluates to true except when both operands are false.
• The binary operator XOR (^) returns true except when both operands have the same value.

Unary Operators

• The unary NOT (!) operator is complimentary, switching true to false and false to true.

Operators in Java

• Operators are symbols that carry out mathematical or logical functions on an operand or operands.
• Types of operators in Java:
  • Unary Operators: have only one operand, e.g., bitwise complement (~), negation (-), increment (++) and decrement (--).
  • Binary Operators: have exactly two operands, e.g., arithmetic, relational, and logical operators.
  • Ternary Operators: have at most three operands, e.g., the conditional operator (?:).

Arithmetic Operators

• Operators: +, -, *, /, %, ++, --
• Descriptions:
  • Addition: +
  • Subtraction: -
  • Multiplication: *
  • Division: /
  • Modulo: %
  • Increment: ++
  • Decrement: --

Relational Operators

• Operators: <, >=, ==, !=, >, <=
• Descriptions:
  • Less than: <
  • Less than or equal to: <=
  • Greater than: >
  • Greater than or equal to: >=
  • Equal to: ==
  • Not Equal to: !=
• Relational operators are binary operators that yield a true or false value.

Logical Operators

• Operators: !, &, |, &&, ||
• Descriptions:
  • NOT: !
  • AND: &
  • OR: |
  • Short-circuit AND: &&
  • Short-circuit OR: ||
• Logical operators are governed by logical rules, and truth tables are necessary to evaluate logical operations.

Coding Exercises

• Calculate the area and perimeter of a rectangle with length 15 and breadth 27.
• Check if the two numbers 35 and 75 are equal.