Questions and Answers
What is the import statement for using the Random class in Java?
import java.util.Random;
How do you generate a random number between 2 to 12 in Java?
variable: int myNum; myNum = randomNum.nextInt(11) + 2;
How do you generate a random number between 5 to 24 in Java?
variable: int number; number = randomNum.nextInt(20) + 5;
How do you generate a random number between -5 to 14 in Java?
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How do you generate a random number between 5 to 25 in Java?
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How do you generate a random number between -5 to 13 in Java?
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Study Notes
Importing the Random Class
- Use
import java.util.Random;to access the Random class for generating random numbers.
Generating Random Numbers - Range: 2 to 12
- Declare an integer variable:
int myNum; - Generate a random number with
myNum = randomNum.nextInt(11) + 2;which gives values from 2 to 12.
Generating Random Numbers - Range: 5 to 24
- Declare an integer variable:
int number; - Generate a random number with
number = randomNum.nextInt(20) + 5;yielding values from 5 to 24.
Generating Random Numbers - Range: -5 to 14
- Declare an integer variable:
int number; - Generate a random number with
number = randomNum.nextInt(20) - 5;providing results from -5 to 14.
Generating Random Numbers - Range: 5 to 25
- Declare an integer variable:
int number; - Generate a random number with
number = randomNum.nextInt(21) + 5;producing numbers between 5 and 25.
Generating Random Numbers - Range: -5 to 13
- Declare an integer variable:
int number; - Generate a random number with
number = randomNum.nextInt(19) - 5;resulting in a range from -5 to 13.
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Description
This quiz provides flashcards focused on the Java Random class and its application in generating random numbers. It covers various range specifications like generating random numbers between 2 to 12, 5 to 24, and -5 to 14. Test your knowledge and understanding of these concepts!
