首先，很抱歉，标题可能有误。我会解释我的问题。我有一个带有 showinputdialog 组件的 joptionpane 来输入服务器地址。我想在单击取消按钮后，它将返回到主窗口。但就我而言，它改为第二个 joptionpane。
我的英语不好 :) ... 任何人都可以帮助我吗？
这是我的代码
private static int setPortNumber()
{
String portNumber = JOptionPane.showInputDialog(frame,
"Enter the Port number for server creation","Server Connection\n",
JOptionPane.OK_CANCEL_OPTION);
int PORT = Integer.parseInt(portNumber);
return PORT;
}
private static String setServerName()
{
server_address = JOptionPane.showInputDialog(frame,
"Enter Server Address or PC-Name.", "Server Connection",
JOptionPane.OK_CANCEL_OPTION);
return server_address;
}
private void networking() {
server_address = setServerName();
try {
PORT = setPortNumber();
if (server_address != null) {
sock = new Socket(InetAddress.getByName(server_address) ,
PORT);
}
else {
SocketException sc = new SocketException();
throw sc;
}
// Recieving input and output streams
InputStreamReader ir = new InputStreamReader(sock.getInputStream());
br = new BufferedReader(ir);
pw = new PrintWriter(sock.getOutputStream());
login.setEnabled(true);
incoming.append("Connected to Server.please login.\n");
connect.setEnabled(false);
pw.println("~##~");
pw.flush();
login.requestFocus();
}
最佳答案
private void networking() {
server_address = setServerName();
if(server_address == null || server_address.equals("")){
//Handle what happens when the server name is empty (or the user clicked the cancel button. If you let the execution continue, then the try/catch block below will pop up the second jInputDialog
}
try {
PORT = setPortNumber();
if (server_address != null) {
sock = new Socket(InetAddress.getByName(server_address) ,
PORT);
}
else {
SocketException sc = new SocketException();
throw sc;
}
...
}
关于java - 处理两个 JOptionPane showInputDialog 中的 java 取消按钮，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20902169/