JAVA Test Prep- Operators and Control Statements- 1

Test Preparation on JAVA Test Prep.- Operators and Control Statements- 1

Which of the following can be operands of arithmetic operators?

1Numeric
2Boolean
3Characters
4Both Numeric & Characters

Explanation: The operand of arithmetic operators can be any of numeric or character type, But not boolean.

Modulus operator, %, can be applied to which of these?

1Integers
2Floating – point numbers
3Both Integers and floating – point numbers
4None of the mentioned

Explanation: Modulus operator can be applied to both integers and floating point numbers.

With x = 0, which of the following are legal lines of Java code for changing the value of x to 1?

  1. x++;
   2. x = x + 1;
   3. x += 1;
   4. x =+ 1;

11, 2 & 3
21 & 4
31, 2, 3 & 4
43 & 2

Explanation: Operator ++ increases value of variable by 1. x = x + 1 can also be written in shorthand form as x += 1. Also x =+ 1 will set the value of x to 1.

Decrement operator, −−, decreases the value of variable by what number?

Which of these statements are incorrect?

1Assignment operators are more efficiently implemented by Java run-time system than their equivalent long forms
2Assignment operators run faster than their equivalent long forms
3Assignment operators can be used only with numeric and character data type
4None of the mentioned

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Test Preparation on JAVA Test Prep.- Operators and Control Statements- 1

Which of the following can be operands of arithmetic operators?

Modulus operator, %, can be applied to which of these?

With x = 0, which of the following are legal lines of Java code for changing the value of x to 1? 1. x++; 2. x = x + 1; 3. x += 1; 4. x =+ 1;

Decrement operator, −−, decreases the value of variable by what number?

Which of these statements are incorrect?

Check your progress:

With x = 0, which of the following are legal lines of Java code for changing the value of x to 1?

1. x++; 2. x = x + 1; 3. x += 1; 4. x =+ 1;