How to nicely format floating numbers to string without unnecessary decimal 0's

To format a floating-point number as a string without unnecessary decimal zeros, you can use the DecimalFormat class from the java.text package. The DecimalFormat class allows you to specify a pattern for formatting numbers as strings.

Here's an example of how you can use the DecimalFormat class to format a floating-point number as a string without unnecessary decimal zeros:

import java.text.DecimalFormat;

public class Main {
  public static void main(String[] args) {
    double x = 123.456789;

    // Create a DecimalFormat with a pattern that removes unnecessary decimal zeros
    DecimalFormat df = new DecimalFormat("#.#####");

    // Format the number as a string
    String str = df.format(x);
    System.out.println(str); // prints "123.45679"
  }
}

In this example, the DecimalFormat is created with a pattern that specifies up to 5 decimal places. The format() method is then used to format the x variable as a string, and the resulting string is printed to the console. The resulting string does not have any unnecessary decimal zeros.

I hope this helps! Let me know if you have any questions.