18 Questions
What is the default data type used for integral values unless there is a concern about memory space?
int
What data type is used to store a single character in Java?
char
Which of the following data types is used when a wider range than int is needed?
long
What is the purpose of the float data type?
To save memory in large arrays of floating-point numbers
What is the default data type used for decimal values?
double
Which class in the java.util package is used to read data from the standard input device and store data into variables?
Scanner
What is the purpose of using the import statement in Java?
To import a specific class or package into the current file
What is the syntax to import a specific class into the current file in Java?
import package_name.Class_name;
What is the purpose of using the asterisk (*) wildcard character in an import statement?
To import all the classes contained in a particular package
What is the hierarchy of integer data types in Java from lowest to highest precision?
byte, short, int, long
What is the purpose of using the byte data type in Java?
To save memory space in large arrays
How many built-in primitive data types are supported in Java?
8
In Java, what is the purpose of the import statement?
To import external libraries
What is the return type of a method that does not return any value?
void
What is the data type of the variable 'a' in the given code snippet?
int
What is the purpose of the package statement in Java?
To declare a package
What happens if the return type of a method is not compatible with the type of value being returned?
The program will not compile
What is the data type of the variable 'name' in the given code snippet?
String
Learn about the different data types in programming, including short, int, long, float, and double, and how they are used in variable declarations. Understand the characteristics of each data type and when to use them. Improve your programming skills with this quiz!
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