Answered: How do you not display a zero at the…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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How do you not display a zero at the end of a double without using an if statement in Java?

Expert Solution

Step 1

Example

import java.text.DecimalFormat;

public class Main
{
public static void main(String[] args) {

double d=40.130;
DecimalFormat df = new DecimalFormat("0.#");
System.out.println(df.format(d));
}
}

Sample Output

In this codeDecimalFormat is used to display the descended number of 0; so, DecimalFormat is used to format the number in a dynamic way.
double variable d is declared with the value 40.130. now, using the DecimalFormat instance df created. 0 number - do not display and then the number formatted as ("0.#") displaying the number 40.1. now, zero has been removed from the double variable d and the value also rounded.

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