import java.net.*;
import java.io.*;public class A{
public static final int PORT=8080;
public static void main(String[] args)throws IOException{
ServerSocket in = new ServerSocket(PORT);
System.out.println(in);
}
}
import java.io.*;public class A{
public static final int PORT=8080;
public static void main(String[] args)throws IOException{
ServerSocket in = new ServerSocket(PORT);
System.out.println(in);
}
}
import java.net.*;
import java.io.*;
2.ServerSocket in = new ServerSocket(PORT);有可能抛出异常(IOException),main
声明抛出public static void main(String[] args)throws IOException
需要显示的抛出她,或者显示捕捉(try...catch)