name

public class CountingByHalves 
 {
        
        public static void main( String[] args )
        {
            
            double x;
            
            System.out.println( "x" );
            System.out.println( "------" );
            
            for ( x = -10; x <= 10; x = x+0.5 ) {
                System.out.println( x );
            }
            
        }
    }
 
    

Picture of the output