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Questions and Answers
What is the purpose of adding braces {} after an if statement?
What is the purpose of adding braces {} after an if statement?
- To create a new code block for variable declarations
- To force the else clause to match the correct if clause (correct)
- To indicate the end of the if statement
- To increase the readability of the code
What type of error is caused by adding a semicolon at the end of an if clause?
What type of error is caused by adding a semicolon at the end of an if clause?
- Compilation error
- Logic error (correct)
- Syntax error
- Runtime error
Which logical operator is used to negate a boolean expression?
Which logical operator is used to negate a boolean expression?
- ^
- ! (correct)
- &&
- ||
Given the expression (age > 18) && (weight > 140), what would be the result if age is 24 and weight is 140?
Given the expression (age > 18) && (weight > 140), what would be the result if age is 24 and weight is 140?
Which logical operator is used to represent the exclusive or operation?
Which logical operator is used to represent the exclusive or operation?
What is the purpose of using the next-line block style for if statements?
What is the purpose of using the next-line block style for if statements?
What is a requirement for the switch-expression in a switch statement?
What is a requirement for the switch-expression in a switch statement?
When comparing a case value to the switch-expression, what is required about the data types?
When comparing a case value to the switch-expression, what is required about the data types?
In a switch statement, what happens if the break statement is not included in a case?
In a switch statement, what happens if the break statement is not included in a case?
What is the purpose of the default case in a switch statement?
What is the purpose of the default case in a switch statement?
Which of the following is NOT a valid data type for the switch-expression in a switch statement?
Which of the following is NOT a valid data type for the switch-expression in a switch statement?
What are the resulting statements in a case statement executed based on in a switch statement?
What are the resulting statements in a case statement executed based on in a switch statement?
What is the default value of a boolean data type in Java?
What is the default value of a boolean data type in Java?
In Java, what is the default size of a double data type?
In Java, what is the default size of a double data type?
What is the output of the program execution shown in the code snippet?
What is the output of the program execution shown in the code snippet?
What will be the value of 'area' if 'radius' is assigned a value of 10 in the program execution?
What will be the value of 'area' if 'radius' is assigned a value of 10 in the program execution?
Which statement is correct regarding Java input and output devices?
Which statement is correct regarding Java input and output devices?
What is the default value of a char data type in Java?
What is the default value of a char data type in Java?
If 'radius' in the program execution is set to 0, what will be the value of 'area'?
If 'radius' in the program execution is set to 0, what will be the value of 'area'?
'int' data type in Java occupies how many bytes by default?
'int' data type in Java occupies how many bytes by default?
'float' data type in Java occupies how many bytes by default?
'float' data type in Java occupies how many bytes by default?
'long' data type in Java occupies how many bytes by default?
'long' data type in Java occupies how many bytes by default?
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