Operator precedence in Java - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is operator precedence in Java?

Operator precedence determines the order in which operators are evaluated in an expression. Operators with higher precedence are evaluated before those with lower precedence.

beginner

Which operator has higher precedence: multiplication (*) or addition (+)?

Multiplication (*) has higher precedence than addition (+), so it is evaluated first in an expression.

beginner

How does parentheses affect operator precedence?

Parentheses have the highest precedence and force the expression inside them to be evaluated first, regardless of other operators.

intermediate

What is the precedence order between logical AND (&&) and logical OR (||)?

Logical AND (&&) has higher precedence than logical OR (||), so && operations are evaluated before || operations.

intermediate

In the expression: int result = 3 + 4 * 2 / (1 - 5); which operation is evaluated first?

The expression inside parentheses (1 - 5) is evaluated first because parentheses have the highest precedence.

Which operator is evaluated first in the expression: 5 + 3 * 2?

A Addition (+)

B Multiplication (*)

C Both at the same time

D Depends on variable types

Multiplication (*) has higher precedence than addition (+), so it is evaluated first.

What does parentheses do in an expression?

A They lower the precedence of operators inside

B They have no effect on operator precedence

C They force the expression inside to be evaluated first

D They change operators to functions

Parentheses have the highest precedence and force the expression inside to be evaluated first.

Which operator has higher precedence: logical AND (&&) or logical OR (||)?

A Logical AND (&&)

B They have the same precedence

C Logical OR (||)

D Depends on the expression

Logical AND (&&) has higher precedence than logical OR (||).

In the expression: 10 / 2 * 3, which operation is performed first?

A Division (10 / 2)

B Multiplication (2 * 3)

C Both at the same time

D Depends on parentheses

Division and multiplication have the same precedence and are evaluated left to right, so division is first.

What is the result of: 4 + 2 * 3 - 1?

A 11

B 15

C 7

D 9

Multiplication first: 2 * 3 = 6; then addition and subtraction left to right: 4 + 6 = 10; 10 - 1 = 9.

Explain how operator precedence affects the evaluation of the expression: 8 + 4 * 2.

Think about which operator Java calculates first.

Describe the role of parentheses in changing the order of operations in Java expressions.

Consider how parentheses can change the normal calculation order.