Questions and Answers
What data type should be used for the variable newFee to enable the Course class to compile?
double newFee;
What is the value of newFee if the code compiles and runs successfully?
$5000.00
Which data type has a higher precision in Java?
double
What happens if the variable percentage is declared as double instead of float?
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Which of the following statements about floating-point numbers in Java is true?
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Study Notes
Data Type for newFee
- The variable newFee should be declared as a double to enable the Course class to compile.
Value of newFee
- The value of newFee depends on the calculation and values used in the code, but if the code compiles and runs successfully, it will hold a decimal value.
Precision in Java
- double data type has a higher precision than float in Java.
Declaring percentage as double
- If the variable percentage is declared as double instead of float, it will be able to hold more precise decimal values and reduce the risk of precision loss.
Floating-point Numbers in Java
- In Java, floating-point numbers are represented as binary fractions, which can lead to slight precision errors due to the conversion from decimal to binary.
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Description
Test your knowledge with this practice set for the Java Foundations Exam 1Z0-811. There are 65 questions to answer within a limited time. Get your final score and see how well you performed.
