// DistanceConv.java
// Java program that, given a distance in metres outputs that distance in kilometres
// rounded to the nearest whole kilometre.
// For example, given 1100m the output will be 1km, and given 1900m the output will be 2km. 

import java.io.*; // java Input/Output package

public class DistanceConv // declares class DistanceConv

{ 
    static double kilo; 
    static double meter; 

    public static void main( String[] args) // begin main method
    
    { 
        InputStreamReader stdin = new InputStreamReader(System.in); // class reads characters
        BufferedReader console =  new BufferedReader(stdin); // class buffereing character streams
        String s; // input distance
 
        System.out.println("Please Enter the distance in meters"); 
 
        try // prompt and input
        
        { 
            s = console.readLine(); // reading a string
            meter = Double.parseDouble(s); // parsing a double value from the string 
        } 
        
        catch(IOException ioex) // exeption handling

		{ 
			System.out.println("Input error"); // error output if invalid data
			System.exit(1); // program terminates
		} 

		//conversion  
        kilo = converToKilo(meter); //calling the function to do the job 
		//output 
        System.out.println(meter + " is equivalent to " + kilo + " kilometers"); 
    	
    } // end method main

    	private static double converToKilo(double meter) // method convert
    	
    { 
        double temp; 
        temp = meter/1000; // every 1000 meters make a kilometer 
        return Math.round(temp); // Math.round rounds the decimal number to the nearest integer 
        	
    } // end method convert	
    
} // end class DistanceConv