java.net.BindException:Address already in use:JVM_Bind

[zhanghuaigong]

一个简单的程序。在 eclipse 运行出现了错误：Exception: java.net.BindException: Address already in use: JVM_Bind。怎么回事？
代码如下：
import java.io.*;
import java.net.*;
import java.util.*;

/**
This program implements a simple server that listens to port 8189 and echoes back all
client input.
*/
public class ECHOsERVER
{
public static void main(String[] args )
{
try
{
// establish server socket
ServerSocket s = new ServerSocket(8189);

// wait for client connection
Socket incoming = s.accept( );
try
{
InputStream inStream = incoming.getInputStream();
OutputStream outStream = incoming.getOutputStream();

Scanner in = new Scanner(inStream);
PrintWriter out = new PrintWriter(outStream, true /* autoFlush */);

out.println( "Hello! Enter BYE to exit." );

// echo client input
boolean done = false;
while (!done && in.hasNextLine())
{
String line = in.nextLine();
out.println("Echo: " + line);
if (line.trim().equals("BYE"))
done = true;
}
}
finally
{
incoming.close();
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}

[amdgaming]

端口 已被占用。。。。

[zhanghuaigong]

为什么端口会被占用？

[amdgaming]

// establish server socket
ServerSocket s = new ServerSocket(8189);
这个，你是不是 运行了n次， 都没关闭 呢

s.close();

[zhengzeng]

ServerSocket类， 程序 结束时，要调用它的close();

如果是其他程序占用，你可以下一个fport来看看谁占用了，或用360中也有这个功能。

或是你改一个端口试试。

[wifewifewife]

在进程里面结束java.exe就可了.
如果不会的话.
哈哈哈.就重起电脑吧.一了百了.肯定行.