Java网络编程实验报告.doc

Java课后作业（班级）指导老师：提交日期：以下为指导教师的评语及评分：评 分教 师日 期课后作业（班级）指导老师：一、实验题目Java网络编程二、实验内容代码：import java.io.*;import .*;import java.util.*;public class Server public static void main(String args) ServerSocket server=null; ServerThread thread; Socket you=null; while(true) try server=new ServerSocket(2010); catch(IOException el) System.out.println(正在监听); try System.out.println(等待客户呼叫); you=server.accept(); System.out.println(客户的地址：+you.getInetAddress(); catch(IOException e) System.out.println(正在等待客户); if(you!=null) new ServerThread(you).start(); class ServerThread extends ThreadSocket socket;DataOutputStream out=null;DataInputStream in=null;String s=null;ServerThread(Socket t)socket=t;tryout=new DataOutputStream(socket.getOutputStream();in=new DataInputStream(socket.getInputStream();catch(IOException e)public void run()while(true)trydouble a=in.readDouble();double b=in.readDouble();double c=in.readDouble();if(a+b=c|a+c=b|b+c=a)double area=-1;out.writeDouble(area);elsedouble p=(a+b+c)/2;double A=(p*(p-a)*(p-b)*(p-c);double area=Math.sqrt(A);out.writeDouble(area);catch(IOException e)System.out.println(客户离开);return;private double sqrt(double q) return 0;import java.io.*;public class Read implements Runnable DataInputStream in; public void setDataInputStream(DataInputStream in) this.in=in; public void run() double result=0; while(true) try result=in.readDouble(); if(result0) System.out.println(你输入的三条边长不能组成三角形); System.out.println(重新输入三角形的三条边长（放弃请输入N）：); else System.out.println(三角形的面积为：+result); System.out.println(输入三角形的三条边长（放弃请输入N）：); catch(IOException e) System.out.println(与服务器已断开+e); break; import java.io.*;import .*;import java.util.*;public class client public static void main(String args) Scanner scanner=new Scanner(System.in); Socket mysocket=null; DataInputStream in=null; DataOutputStream out=null; Thread readData; Read read=null; try mysocket=new Socket(); read=new Read(); readData = new Thread(read); System.out.print(请输入服务器的IP地址:); String IP=scanner.nextLine(); System.out.print(请输入端口号：); int port=scanner.nextInt(); if(mysocket.isConnected() else InetAddress address=InetAddress.getByName(IP); InetSocketAddress socketAddress=new InetSocketAddress(address,port); mysocket.connect(socketAddress); in=new DataInputStream(mysocket.getInputStream(); out=new DataOutputStream(mysocket.getOutputStream(); read.setDataInputStream(in); readData.start(); catch(Exception e) System.out.print(服务器已经断开+e); System.out.println(请输入三角形的三条边长（放弃请输入N）：); while(scanner.hasNext() double a=0; double b=0; double c=0; try a=scanner.nextDouble(); b=scanner.nextDouble(); c=scanner.nextDouble(); catch(InputMismatchException exp) System.exit(0);