Assignment operators in Java - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the basic assignment operator in Java?

The basic assignment operator is =. It assigns the value on the right to the variable on the left.

beginner

What does the operator += do in Java?

The += operator adds the right-hand value to the left-hand variable and then assigns the result back to that variable. For example, x += 5 means x = x + 5.

beginner

Explain the difference between = and == in Java.

= is the assignment operator used to set a value to a variable. == is the equality operator used to compare two values to check if they are equal.

beginner

What does the operator /= do?

The /= operator divides the left-hand variable by the right-hand value and assigns the result back to the variable. For example, x /= 2 means x = x / 2.

beginner

How does the %= operator work in Java?

The %= operator calculates the remainder of dividing the left-hand variable by the right-hand value and assigns it back to the variable. For example, x %= 3 means x = x % 3.

What does the expression x *= 4 do in Java?

A Checks if x equals 4

B Multiplies x by 4 and assigns the result to x

C Divides x by 4 and assigns the result to x

D Assigns 4 to x

x *= 4 means x = x * 4, so it multiplies x by 4 and stores the result in x.

Which operator assigns the remainder of division to a variable?

A /=

B -=

C +=

D %=

The %= operator assigns the remainder of the division back to the variable.

What is the result of int a = 10; a -= 3;?

A a is 7

B a is 13

C a is 3

D a is 10

a -= 3 means a = a - 3, so a becomes 7.

Which operator is used to assign a value to a variable?

A ==

B +=

C =

D !=

The = operator assigns the value on the right to the variable on the left.

What does x /= 5 do?

A Divides x by 5 and assigns the result to x

B Multiplies x by 5

C Adds 5 to x

D Subtracts 5 from x

x /= 5 means x = x / 5, dividing x by 5 and storing the result.

Explain how compound assignment operators like += and *= work in Java.

Think about how you can update a variable by combining math and assignment in one step.

Describe the difference between the assignment operator = and the equality operator ==.

One sets a value, the other checks if two values are the same.