in java Arun needs to create a program that handles user input by converting a float value to both double and integer formats. Write a program for him that reads a float value entered by the user, converts it to double with one decimal place and integer type, and displays the results. Input format : The input consists of a float value f. Output format : The output prints the converted double value, rounded off to one decimal place, followed by the converted integer. Separate the values using (;).
Question
in java Arun needs to create a program that handles user input by converting a float value to both double and integer formats.
Write a program for him that reads a float value entered by the user, converts it to double with one decimal place and integer type, and displays the results.
Input format : The input consists of a float value f.
Output format : The output prints the converted double value, rounded off to one decimal place, followed by the converted integer.
Separate the values using (;).
Solution
Here is a simple Java program that reads a float value from the user, converts it to a double and an integer, and then prints the results:
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("Enter a float value:");
float f = scanner.nextFloat();
double d = (double) Math.round(f * 10) / 10;
int i = (int) f;
System.out.println(d + ";" + i);
}
}
This program works as follows:
-
It first imports the
Scannerclass, which is used to read user input. -
It then defines the
mainmethod, which is the entry point for any Java program. -
Inside the
mainmethod, it creates a newScannerobject that reads from the standard input (keyboard). -
It prompts the user to enter a float value.
-
It reads the float value entered by the user and stores it in the variable
f. -
It converts the float value to a double value with one decimal place by multiplying it by 10, rounding it to the nearest whole number, and then dividing it by 10. This is done using the
Math.roundmethod. The result is stored in the variabled. -
It converts the float value to an integer by casting it to an
int. This effectively truncates the decimal part of the float value. The result is stored in the variablei. -
Finally, it prints the double and integer values, separated by a semicolon.
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