java : add Ping.java

1 files changed, 26 insertions, 0 deletions

diff --git a/java/Ping.java b/java/Ping.java
new file mode 100644
index 0000000..8e88261
--- /dev/null
+++ b/java/Ping.java
@@ -0,0 +1,26 @@
+
+import java.io.IOException;
+import java.net.UnknownHostException;
+import java.net.InetAddress;
+
+public class Ping {
+
+    public static void tryPing(String ipAddress)
+    {
+        boolean reachable = false;
+        try {
+            InetAddress inet = InetAddress.getByName(ipAddress);
+            reachable = inet.isReachable(5000);
+        }
+        catch (UnknownHostException e) {}
+        catch (IOException e) {}
+        System.out.println(ipAddress + " is " + (reachable ? "is reachable" : "is NOT reachable"));
+    }
+
+    public static void main(String[] args) throws UnknownHostException, IOException
+    {
+        tryPing("127.0.0.1");
+        tryPing("asynk.ch");
+        tryPing("asynk.cc");
+    }
+}