java.lang.NumberFormatException: Invalid int: ""

java.lang.NumberFormatException: Invalid int: “”

hostText = (EditText) findViewById(R.id.host);
portText = (EditText) findViewById(R.id.port);
String hostName = hostText.getText().toString().trim();
String portString = hostText.getText().toString().trim();
int port;
if(portString==null){
port=3000;
}else{
port=Integer.parseInt(portString);
}
if (hostName == null) {
hostName = "192.168.13.245";
}
Log.d(tag, "Input host name is: "+hostName);
SocketClient client = new SocketClient();
client.host = hostName;
client.port = port;
client.start();

hostText = (EditText) findViewById(R.id.host);
portText = (EditText) findViewById(R.id.port);
String hostName = hostText.getText().toString().trim();
String portString = hostText.getText().toString().trim();
int port;
try {
port = Integer.parseInt(portString);
} catch (NumberFormatException e) {
port = 3000;
}
if (hostName == null) {
hostName = "192.168.13.245";
}
Log.d(tag, "Input host name is: "+hostName);
SocketClient client = new SocketClient();
client.host = hostName;
client.port = port;
client.start();