12 Questions
What is the memory allocated for the float data type in Java?
4 bytes
What is the method that every Java application program must have?
main
How many significant digits can a double data type value hold?
15
Which of the following characters can be used to start a single-line comment in Java?
//
Which Java data type represents single precision values?
float
What are identifiers in Java?
Names of variables, methods, classes, etc.
Which data type in Java is used to represent integers between 2147483648 and 2147483647?
int
When evaluating an operator in an expression, how is an integer treated in a mixed expression?
As a decimal number with a decimal part of zero
Which category of primitive data types in Java is used to deal with characters?
integral
Which reserved word is used to declare a named constant in Java?
final
What is the maximum number of decimal places in float values?
6 or 7
What character set does Java use?
Unicode (65536 characters)
Test your knowledge of basic Java concepts with this quiz covering classes, main method, comments, identifiers, and reserved words. Identify statements that are true about Java programs and coding syntax.
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