Java Programming: Operators and Assignment

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Questions and Answers

What is the result of the expression 'c = a + b'?

30 (correct)

What happens when you use the '=>' operator in Java?

It performs a bitwise left shift operation.

It performs a logical AND operation.

It performs a bitwise right shift operation.

It is not a valid operator in Java. (correct)

What is the purpose of the '+' operator in Java?

It performs a division operation.

It performs a multiplication operation.

It performs an addition operation. (correct)

It performs a subtraction operation.

What is the result of the expression 'c /= a'?

1 Signup and view all the answers

What is the purpose of the '%' operator in Java?

It performs a modulus operation. Signup and view all the answers

What is the result of the expression 'c %= a'?

5 Signup and view all the answers

What is the purpose of the '>>' operator in Java?

It performs a bitwise right shift operation. Signup and view all the answers

What is the purpose of the '^' operator in Java?

It performs a bitwise XOR operation. Signup and view all the answers

What is the result of the expression a & b?

12 Signup and view all the answers

What is the result of the expression a ^ b?

49 Signup and view all the answers

What is the result of the expression ~a?

-61 Signup and view all the answers

What is the result of the expression a >>> 2?

a / 4 Signup and view all the answers

What is the condition for the Logical AND operator (&&) to be true?

If both the operands are non-zero Signup and view all the answers

What is the function of the Logical NOT operator (!)?

To reverse the logical state of its operand Signup and view all the answers

What is the result of the expression `a && b` in the given Java program?

false Signup and view all the answers

What is the purpose of the `+=` operator in Java?

To add and assign the result to the left operand Signup and view all the answers

What is the result of the expression `a || b` in the given Java program?

true Signup and view all the answers

What is the purpose of the `&=` operator in Java?

To perform bitwise AND operation Signup and view all the answers

What is the result of the expression `!(a && b)` in the given Java program?

true Signup and view all the answers

What is the purpose of the `/=` operator in Java?

To perform division Signup and view all the answers

What is the purpose of the `%=` operator in Java?

To perform modulus Signup and view all the answers

What is the purpose of the `^=` operator in Java?

To perform bitwise XOR operation Signup and view all the answers

What is the purpose of the `|=` operator in Java?

To perform bitwise OR operation Signup and view all the answers

What is the purpose of the `=` operator in Java?

To assign values from the right side operand to the left side operand Signup and view all the answers

Study Notes

Operators in Java

Java program demonstrates the use of various operators:
- Arithmetic operators: +, -, *, /, %
- Assignment operators: =, +=, -=, *=, /=, %=, &=, ^=, |=
- Miscellaneous operators: >>, ~, !

Assignment Operators

Simple assignment operator: =
- Assigns values from right-side operands to left-side operands
- Example: C = A + B will assign the value of A + B into C
Add AND assignment operator: +=
- Adds right operand to the left operand and assigns the result to left operand
- Example: C += A is equivalent to C = C + A
Subtract AND assignment operator: -=
- Subtracts right operand from the left operand and assigns the result to left operand
- Example: C -= A is equivalent to C = C - A
Multiply AND assignment operator: *=
- Multiplies right operand with the left operand and assigns the result to left operand
- Example: C *= A is equivalent to C = C * A
Divide AND assignment operator: /=
- Divides left operand with the right operand and assigns the result to left operand
- Example: C /= A is equivalent to C = C / A
Modulus AND assignment operator: %=
- Takes modulus using two operands and assigns the result to left operand
- Example: C %= A is equivalent to C = C % A
Bitwise AND assignment operator: &=
- Example: C &= 2 is same as C = C & 2
Bitwise exclusive OR and assignment operator: ^=
- Example: C ^= 2 is same as C = C ^ 2
Bitwise inclusive OR and assignment operator: |=
- Example: C |= 2 is same as C = C | 2

Logical Operators

Logical AND operator: &&
- If both operands are non-zero, then the condition becomes true
- Example: (A && B) is false
Logical OR operator: ||
- If any of the two operands are non-zero, then the condition becomes true
- Example: (A || B) is true
Logical NOT operator: !
- Reverses the logical state of its operand
- Example: !(A && B) is true

Conditional Operator

Also known as the ternary operator
Consists of three operands and is used to evaluate Boolean expressions
The goal of the operator is to decide which value should be assigned to the variable
Example: variable x = (expression) ? value1 : value2

Miscellaneous Operators

Conditional operator: ?:
- Used to evaluate Boolean expressions
Bitwise operators: ~, >>
- Example: a >>> 2

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Description

This quiz is about understanding the usage of operators and assignment in Java programming, including addition, subtraction, and increment/decrement operations. It involves a Java program that demonstrates the use of these operations.