这是一个talk的程序的驱动程序
package main.java;
import java.io.IOException;
/** Driver class for the Talk socket application. */
public class Talk {
/**
* The program behaves as a client with the specified client connection.
* @param client the client interface to use for socket communication
* @return {@code false} if the host is not available
* @throws never should return {@code false} rather than throwing an exception
*/
protected boolean clientMode(BasicTalkInterface client) {
//任务return FALSE 如果host 不可用
return false;
}
/**
* The program behaves as a server with the specified server.
* @param server the server interface to use for socket communication
* @return {@code false} if the port is not available
* @throws never should return {@code false} rather than throwing an exception
*/
protected boolean serverMode(BasicTalkInterface server) {
//任务return FALSE 如果host 不可用
return false;
}
/**
* The program enters auto mode and behaves as a client attempting to connect to the specified
* host on the specified port. If the host is not available, the program should behave as a
* server listening for connections on the specified port.
* @param hostname the host to connect to
* @param portnumber the port to connect to or listen on
* @return {@code false} if the host and port are both unavailable
* @throws never should return {@code false} rather than throwing an exception
*/
public boolean autoMode(String hostname, int portnumber) {
//任务call clientMode and serverMode
return false;
}
/**
* The program behaves as a client connecting to the specified host on the specified port.
* @param hostname the host to connect to
* @param portnumber the port to connect to
* @return {@code false} if the host is not available
* @throws never should return {@code false} rather than throwing an exception
*/
public boolean clientMode(String hostname, int portnumber) {
try {
return this.clientMode(new TalkClient(hostname, portnumber));
} catch (IOException e) {
return false;
}
}
/**
* Should print your name and instructions on how to use the talk program. Instructions must
* at least include the line "Talk [-a | –h | -s] [hostname | IPaddress] [–p portnumber]"
*/
public void helpMode() {
//
}
/**
* The program behaves as a server listening for connections on the specified port.
* @param portnumber the port to listen for connections on
* @return {@code false} if the port is unavailable
* @throws never should return {@code false} rather than throwing an exception
*/
public boolean serverMode(int portnumber) {
try {
return this.serverMode(new TalkServer(portnumber));
} catch (IOException e) {
return false;
}
}
/**
* Parses the specified args and executes the talk program in its intended mode.
* @param args the CLI args
* @throws never should return {@code false} rather than throwing an exception
*/
public boolean start(String[] args) {
// 任务调出autoMode, clientMode, helpMode, and serverMode
return false;
}
public static void main(String[] args) {
System.exit(new Talk().start(args) ? 0 : 1);
}
}
