Podcast
Questions and Answers
What is the purpose of the following Java program?
What is the purpose of the following Java program?
- To prompt the user to enter a number for radius
- To read the radius of a circle and compute its area (correct)
- To print a message asking for a double value
- To display the result of a circle's area computation
Which statement is used to create a Scanner object in Java?
Which statement is used to create a Scanner object in Java?
- Scanner(System.in); input = new Scanner;
- Scanner input = new Scanner(System.in); (correct)
- Scanner(System.in) input = new Scanner;
- input = new Scanner(System.in);
What is the purpose of the 'prompt the user to enter a radius' statement in the program?
What is the purpose of the 'prompt the user to enter a radius' statement in the program?
- To initialize the value of radius
- To request the user to input a value for radius (correct)
- To calculate the area of a circle
- To display the result of the area computation
What value is used to approximate pi in the program?
What value is used to approximate pi in the program?
In Java, what is the purpose of the 'import java.util.Scanner;' statement in the program?
In Java, what is the purpose of the 'import java.util.Scanner;' statement in the program?
What does 'System.out.print("Enter a double value: ");' represent in the program?
What does 'System.out.print("Enter a double value: ");' represent in the program?
What is the correct syntax for declaring a constant in Java?
What is the correct syntax for declaring a constant in Java?
Which naming convention should be used for class names in Java?
Which naming convention should be used for class names in Java?
What is the preferred block style for braces in Java?
What is the preferred block style for braces in Java?
How do you get input from input dialog boxes in Java?
How do you get input from input dialog boxes in Java?
What should you do to obtain a number from the input dialog box in Java?
What should you do to obtain a number from the input dialog box in Java?
Which data type is used for constants in Java?
Which data type is used for constants in Java?
What is the correct syntax for declaring a variable in Java?
What is the correct syntax for declaring a variable in Java?
Which operator is used for shortcut assignment in Java?
Which operator is used for shortcut assignment in Java?
What is the correct naming convention for variables and method names in Java?
What is the correct naming convention for variables and method names in Java?
How would you convert a string into a number in Java?
How would you convert a string into a number in Java?
In Java, what is the purpose of the 'import java.util.Scanner;' statement in the program?
In Java, what is the purpose of the 'import java.util.Scanner;' statement in the program?
What is the purpose of the 'System.out.print("Enter a number for radius: ");' statement in the program?
What is the purpose of the 'System.out.print("Enter a number for radius: ");' statement in the program?
Which keyword is used for declaring a constant variable in Java?
Which keyword is used for declaring a constant variable in Java?
What type of input does the 'input.nextDouble();' method expect in the Java program?
What type of input does the 'input.nextDouble();' method expect in the Java program?
Which Java keyword is used to define a reusable block of code that can be called with different arguments?
Which Java keyword is used to define a reusable block of code that can be called with different arguments?
What is the general purpose of the 'ComputeAreaWithConsoleInput' class in the Java program?
What is the general purpose of the 'ComputeAreaWithConsoleInput' class in the Java program?
Which naming convention should be used for variables and method names in Java?
Which naming convention should be used for variables and method names in Java?
What is the correct syntax for declaring a constant in Java?
What is the correct syntax for declaring a constant in Java?
What block style should be used for braces in Java?
What block style should be used for braces in Java?
What is the purpose of 'import javax.swing.JOptionPane;' in the program?
What is the purpose of 'import javax.swing.JOptionPane;' in the program?
What is used to obtain the input as a number from a string in Java?
What is used to obtain the input as a number from a string in Java?
What is the correct naming convention for class names in Java?
What is the correct naming convention for class names in Java?
Which operator is used for shortcut assignment in Java?
Which operator is used for shortcut assignment in Java?
What is used to approximate pi in Java?
What is used to approximate pi in Java?
'println' is a method belonging to which class in Java?
'println' is a method belonging to which class in Java?
'JOptionPane.showInputDialog' is used to get input from which type of dialog box in Java?
'JOptionPane.showInputDialog' is used to get input from which type of dialog box in Java?
