/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.math.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		double[]n = {
			0.34567089445515,
			0.034567089445515,
			0.0034567089445515,
			0.00034567089445515,
			0.000034567089445515,
			0.0000034567089445515,
			0.00000034567089445515,
			0.000000034567089445515,
			0.0000000034567089445515,
			0.00000000034567089445515
		};
 
		for(int i=0; i<n.length; i++) {
			System.out.print((i+1) + ": ");
			System.out.println(truncate(n[i]).toPlainString());
		}
	}
 
 
	// turned to bigdecimal
	static BigDecimal truncate(double value) {
		int precision = 10;
		// removed to show behaviour
	    /*if (value != 0 && Math.abs(value) < 1) {
	        precision--;
	    }*/
 
	    BigDecimal b = new BigDecimal(String.valueOf(value));
	    b = b.round(new MathContext(precision));
	    return b;
	}
}

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