/* 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
	{
        BigDecimal eightyPercent = new BigDecimal( "0.8" ) ;
		BigDecimal bd = new BigDecimal( "4096" ).multiply( eightyPercent ) ;  
        BigDecimal rounded = bd.setScale( 0 , RoundingMode.HALF_EVEN ) ;  // Bankers rounding.
        int result = rounded.intValueExact() ;  // Throws exception if not fitting into an `int` with no data loss.
 
        System.out.println( eightyPercent ) ;
        System.out.println( bd ) ;
        System.out.println( rounded ) ;
        System.out.println( result ) ;
 
        System.out.println( 
            new BigDecimal( "4096" )
            .multiply( new BigDecimal( "0.8" ) )
            .setScale( 0 , RoundingMode.HALF_EVEN )
            .intValueExact()
         ) ;
	}
}

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