Java Math Exercises: Round a float number to specified decimals
Java Math Exercises: Exercise-4 with Solution
Write a Java program to round a float number to specified decimals.
Sample Solution:
Java Code:
import java.lang.*;
import java.math.BigDecimal;
public class Example4 {
public static void main(String[] args) {
float x = 451.3256412f;
BigDecimal result;
int decimal_place = 4;
BigDecimal bd_num = new BigDecimal(Float.toString(x));
bd_num = bd_num.setScale(decimal_place, BigDecimal.ROUND_HALF_UP);
System.out.printf("Original number: %.7f\n",x);
System.out.println("Rounded upto 4 decimal: "+bd_num);
}
}
Sample Output:
Original number: 451.3256531 Rounded upto 4 decimal: 451.3257
Flowchart:

Java Code Editor:
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