我现在用JOptionPane.showMessageDialog来显示一个出错的提示对话框,可是显示出来的对话框的确定按钮的确定两个字显示不出来,是两个方框,我该怎么解决这个问题阿??请高手帮忙,谢谢。
我是放在了一个if语句之下,要是放在if外就正确显示了,怎么回事啊?
我是放在了一个if语句之下,要是放在if外就正确显示了,怎么回事啊?
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mport java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;import javax.swing.JOptionPane;
public class Datarecevied extends Thread{
public Datarecevied(String NAME)throws IOException{
socketserver = new DatagramSocket(8000);
name = GetData(NAME); }
protected DatagramSocket socketserver=null;
public String received,name;
public String GetData(String string){
return string;
}
public void run(){
ChatTableFrame cf;
try {
cf = new ChatTableFrame(name);
GetUserList getuser = new GetUserList();
getuser.start();
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
while(true)
{
cf.lst.clear();
for(int i = getuser.num-1;i>=0;i--){
cf.lst.addItem(getuser.ss[i]);
}
try{
byte[] rbuf=new byte[256];
byte[] buf=new byte[15];
DatagramPacket packet=new DatagramPacket(rbuf,rbuf.length);
socketserver.receive(packet);
received = new String(packet.getData());
String rece = received.substring(0,15);
System.out.println(rece);
if(rece.equals("filesendrequest")){
JOptionPane.showMessageDialog(cf,"hello","title",JOptionPane.DEFAULT_OPTION);
int value =JOptionPane.showConfirmDialog(null, "对方请求发送文件,是否接收?", "询问", JOptionPane.YES_NO_OPTION);
cf.ta.append("\n对方请求发送文件,是否接收?");
if(value == 1){
String dString=null;
InetAddress address=packet.getAddress();
dString="notagreetoreceviedfile";
byte[] sbuf=new byte[19];
sbuf=dString.getBytes();
int port=packet.getPort();
packet=new DatagramPacket(sbuf,sbuf.length,address,port);
socketserver.send(packet);
}else{
String dString=null;
InetAddress address=packet.getAddress();
dString="agreetoreceviedfile";
Filerecevied fr = new Filerecevied();
fr.start();
byte[] sbuf=new byte[19];
sbuf=dString.getBytes();
int port=packet.getPort();
packet=new DatagramPacket(sbuf,sbuf.length,address,port);
socketserver.send(packet);
}
}
else{
System.out.println(received);
cf.ta.append(GetData(received+"\n"));
}
}catch(IOException e1)
{
e1.printStackTrace();
}
}} catch (IOException e) {
e.printStackTrace();
}
}}好像有这句if(rece.equals("filesendrequest"))就不行了