With this snippet you can ping a IP Address or Hostname in Java on Windows.

PingTest.java

private InetAddress inet;
private long start;
private long end;
	
public PingTest(InetAddress inet)
{
	this.inet = inet;
	this.start = System.currentTimeMillis();
	this.end = (this.start -1);
}

public void runCmd()
{
	int timeout = 3800;
	try
	{
		ProcessBuilder processBuilder = new ProcessBuilder(new String[] { "ping", inet.getHostAddress(), "-n", "1" });
	        Process process = processBuilder.start();
	        
	        int processing = 0;
	        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
	        while (bufferedReader.readLine() != null) 
	        {
	        	processing++;
	        	if(processing == 2)
	        	{
	        		this.start = System.currentTimeMillis();
	        	}
	        	
	        	else if(processing == 3)
	        	{
		    	        this.end = System.currentTimeMillis();
	        	}
	        }
	        
	        if(calculatePingDelay() > timeout)
		{
			System.out.println("Cannot reached '" + inet.toString() + "'. Is your internet too slow?");
			return;
		}
	        
	        System.out.println("Received response from '" + inet.toString() + "' in " + calculatePingDelay() + "ms");
	        bufferedReader.close();
	}
	catch (IOException ex)
	{
		System.err.println("Error while connecting to '" + inet.toString() + "'");
		ex.printStackTrace();
	}
}