32 Questions
What is the purpose of the following Java program?
To read the radius of a circle and compute its area
Which statement is used to create a Scanner object in Java?
Scanner input = new Scanner(System.in);
What is the purpose of the 'prompt the user to enter a radius' statement in the program?
To request the user to input a value for radius
What value is used to approximate pi in the program?
3.14159
In Java, what is the purpose of the 'import java.util.Scanner;' statement in the program?
To import the Scanner class from the java.util package
What does 'System.out.print("Enter a double value: ");' represent in the program?
A message prompting the user to input a double value
What is the correct syntax for declaring a constant in Java?
final int CONSTANT_NAME = 10;
Which naming convention should be used for class names in Java?
Capitalize the first letter of each word
What is the preferred block style for braces in Java?
End-of-line style
How do you get input from input dialog boxes in Java?
Using JOptionPane class
What should you do to obtain a number from the input dialog box in Java?
Use parseInt() method
Which data type is used for constants in Java?
final
What is the correct syntax for declaring a variable in Java?
int variableName = 10;
Which operator is used for shortcut assignment in Java?
+=
What is the correct naming convention for variables and method names in Java?
Capitalize the first letter of each word
How would you convert a string into a number in Java?
.parseInt() method
In Java, what is the purpose of the 'import java.util.Scanner;' statement in the program?
To include the Scanner class from the java.util package
What is the purpose of the 'System.out.print("Enter a number for radius: ");' statement in the program?
To prompt the user to enter a number for the radius
Which keyword is used for declaring a constant variable in Java?
final
What type of input does the 'input.nextDouble();' method expect in the Java program?
Double
Which Java keyword is used to define a reusable block of code that can be called with different arguments?
method
What is the general purpose of the 'ComputeAreaWithConsoleInput' class in the Java program?
To calculate and display the area of a circle based on user input
Which naming convention should be used for variables and method names in Java?
Lowercase for the first word and capitalize the first letter of each subsequent word
What is the correct syntax for declaring a constant in Java?
final datatype CONSTANTNAME = VALUE;
What block style should be used for braces in Java?
End-of-line style
What is the purpose of 'import javax.swing.JOptionPane;' in the program?
To import package for GUI components and input dialog boxes
What is used to obtain the input as a number from a string in Java?
'Integer.parseInt' method
What is the correct naming convention for class names in Java?
Capitalize the first letter of each word in the name
Which operator is used for shortcut assignment in Java?
+=
What is used to approximate pi in Java?
3.14159
'println' is a method belonging to which class in Java?
'PrintStream' class
'JOptionPane.showInputDialog' is used to get input from which type of dialog box in Java?
'QUESTION_MESSAGE' dialog box
Test your understanding of Java programming basics based on Chapter 2 to 7 of the textbook 'Introduction to Java Programming and Data Structures, Comprehensive Version'. This quiz covers topics such as programming syntax and selection statements.
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