Boa dia pessoal, como é feito a passagem de argumento nesse codigo

import java.net.InetAddress;  
	import java.net.UnknownHostException;  
	import java.io.IOException; 
public class TestePing {
	
	
	public static void main(String[] args) {
		  
		 if (args.length == 1) {  
		      InetAddress address = null;  
		      try {  
		        address = InetAddress.getByName(args[0]);  
		      } catch (UnknownHostException e) {  
		        System.out.println("Cannot lookup host "+args[0]);  
		        return;  
		      }  
		      try {  
		        if (address.isReachable(5000)) {  
		          long nanos = 0;  
		          long millis = 0;  
		          long iterations = 0;  
		          while (true) {  
		            iterations++;  
		            try {  
		              nanos = System.nanoTime();  
		              address.isReachable(500); // this invocation is the offender  
		              nanos = System.nanoTime()-nanos;  
		            } catch (IOException e) {  
		              System.out.println("Failed to reach host");  
		            }  
		            millis = Math.round(nanos/Math.pow(10,6));  
		            System.out.println("Resposta do IP: "+address.getHostAddress()+" com de tempo="+millis+" ms");  
		            try {  
		              Thread.sleep(Math.max(0, 1000-millis));  
		            } catch (InterruptedException e) {  
		              break;  
		            }  
		          }  
		          System.out.println("Iterations: "+iterations);  
		        } else {  
		          System.out.println("Host "+address.getHostName()+" is not reachable even once.");  
		        }  
		      } catch (IOException e) {  
		        System.out.println("Network error.");  
		      }  
		    } else {  
		      System.out.println("Usage: java isReachableTest <host>");  
		    }  
		  }  
		}