java源代码机器人 java iterator源码

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Server.java

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import java.io.DataInputStream;

import java.io.DataOutputStream;

import java.io.IOException;

import java.net.ServerSocket;

import java.net.Socket;

import java.util.ArrayList;

import java.util.List;

public class Server {

private ListServerThread serverThreads;

private ServerSocket serverSocket;

public Server() throws IOException {

serverSocket = new ServerSocket(8025);

serverThreads = new ArrayListServerThread();

}

public ListServerThread getServerThreads() {

return serverThreads;

}

public void setServerThreads(ListServerThread serverThreads) {

this.serverThreads = serverThreads;

}

public ServerSocket getServerSocket() {

return serverSocket;

}

public void setServerSocket(ServerSocket serverSocket) {

this.serverSocket = serverSocket;

}

public static void main(String[] args) {

Server server = null;

try {

server = new Server();

} catch (IOException e) {

e.printStackTrace();

System.exit(-1);

}

try {

Socket socket;

Thread t;

while (true) {

socket = server.getServerSocket().accept();

ServerThread serverThread = new ServerThread(server, socket);

server.getServerThreads().add(serverThread);

t = new Thread(serverThread);

t.start();

}

} catch (IOException e) {

e.printStackTrace();

}

}

public void sendMessage(String message, Socket socket) {

for (ServerThread serverThread : serverThreads) {

try {

serverThread.getDos().writeUTF(message);

} catch (IOException e) {

// e.printStackTrace();

System.out.println("推送消息给" + serverThread.getSocket().getRemoteSocketAddress() + "过程中发生了错误.");

}

}

}

}

class ServerThread implements Runnable {

private Server server;

private Socket socket;

private DataInputStream dis;

private DataOutputStream dos;

public ServerThread(Server server, Socket socket) throws IOException {

this.server = server;

this.socket = socket;

dis = new DataInputStream(socket.getInputStream());

dos = new DataOutputStream(socket.getOutputStream());

}

public Server getServer() {

return server;

}

public void setServer(Server server) {

this.server = server;

}

public Socket getSocket() {

return socket;

}

public void setSocket(Socket socket) {

this.socket = socket;

}

public DataInputStream getDis() {

return dis;

}

public void setDis(DataInputStream dis) {

this.dis = dis;

}

public DataOutputStream getDos() {

return dos;

}

public void setDos(DataOutputStream dos) {

this.dos = dos;

}

public void run() {

String message = "";

while (!message.equals("logout")) {

try {

message = socket.getRemoteSocketAddress() + " say: " + dis.readUTF();

// System.out.println(message);

server.sendMessage(message, socket);

} catch (IOException e) {

//e.printStackTrace();

break;

}

}

server.getServerThreads().remove(this);

try {

dis.close();

dos.close();

socket.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

Client.java

import java.io.DataInputStream;

import java.io.DataOutputStream;

import java.io.IOException;

import java.net.Socket;

import java.net.UnknownHostException;

import java.util.Scanner;

public class Client {

private Socket socket;

private DataOutputStream dos;

private DataInputStream dis;

public Client() throws UnknownHostException, IOException {

socket = new Socket("127.0.0.1", 8025);

dis = new DataInputStream(socket.getInputStream());

dos = new DataOutputStream(socket.getOutputStream());

new Thread(new ClientThread(this)).start();

}

public Socket getSocket() {

return socket;

}

public void setSocket(Socket socket) {

this.socket = socket;

}

public DataOutputStream getDos() {

return dos;

}

public void setDos(DataOutputStream dos) {

this.dos = dos;

}

public DataInputStream getDis() {

return dis;

}

public void setDis(DataInputStream dis) {

this.dis = dis;

}

public void close() {

try {

dis.close();

dos.close();

socket.close();

} catch (IOException e) {

e.printStackTrace();

}

}

private void sendMessage(String message) {

try {

dos.writeUTF(message);

} catch (IOException e) {

e.printStackTrace();

}

}

public static void main(String[] args) {

Client client = null;

try {

client = new Client();

System.out.println(client.getSocket().getLocalPort());

} catch (IOException e) {

System.out.println("BUG");

e.printStackTrace();

System.exit(-1);

}

String message = "";

Scanner scanner = new Scanner(System.in);

while (!message.equals("logout")) {

message = scanner.nextLine();

// System.out.println(message);

client.sendMessage(message);

}

scanner.close();

client.close();

}

}

class ClientThread implements Runnable {

private Client client;

public ClientThread(Client client) {

super();

this.client = client;

}

@Override

public void run() {

try {

while (true) {

System.out.println(client.getDis().readUTF());

}

} catch (IOException e) {

e.printStackTrace();

}

}

}

跪求大神荣光 回答下面的机器人的JAVA代码

import java.text.DecimalFormat;

import java.util.ArrayList;

import java.util.List;

import java.util.Scanner;

public class WalkDistance {

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

int n = in.nextInt();

for (int i = 0; i n; i++) {

String order = in.next();

System.out.println(new DecimalFormat("0.00").format(calDistance(order)));

}

in.close();

}

private static float calDistance(String order) {

char[] orderChar = order.toCharArray();

ListString orderList = new ArrayListString();

int num = 0;

for (int i = 0, len = orderChar.length; i len; i++) {

if (orderChar[i] = '0' orderChar[i] = '9') {

num++;

} else {

if (num == 0) {

orderList.add(String.valueOf(orderChar[i]));

} else {

StringBuffer sb = new StringBuffer();

for (int j = num; j 0; j--) {

sb.append(String.valueOf(orderChar[i - j]));

}

orderList.add(sb.toString());

orderList.add(String.valueOf(orderChar[i]));

num = 0;

}

}

if (i == len - 1 num != 0) {

StringBuffer sb = new StringBuffer();

for (int j = num - 1; j = 0; j--) {

sb.append(String.valueOf(orderChar[i - j]));

}

orderList.add(sb.toString());

}

}

Point curPoint = new Point(0, 0, 90);

for (int i = 0, len = orderList.size(); i len; i++) {

if ("R".equals(orderList.get(i))) {

curPoint.angle = (curPoint.angle - 90 + 360) % 360;

} else if ("L".equals(orderList.get(i))) {

curPoint.angle = (curPoint.angle + 90) % 360;

} else {

curPoint.setLocation(curPoint, orderList.get(i));

}

}

return curPoint.getDis();

}

static class Point {

private int x;

private int y;

private int angle;

private float dis;

public Point(int x, int y, int angle) {

this.x = x;

this.y = y;

this.angle = angle;

this.dis = (float) 0;

}

public void setLocation(Point point, String distance) {

if (point.angle == 0) {

point.x += Integer.valueOf(distance);

} else if (point.angle == 90) {

point.y += Integer.valueOf(distance);

} else if (point.angle == 180) {

point.x -= Integer.valueOf(distance);

} else {

point.y -= Integer.valueOf(distance);

}

}

public float getDis() {

return (float) Math.sqrt(this.x * this.x + this.y * this.y);

}

}

}

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是这样的错误么？

Frist.java:5: cannot resolve symbol

symbol : class Scanner

location: class Frist

Scanner input=new Scanner(System.in);

Scanner是JDK1.5开始才有的

这样的错误是因为JDK版本不够，不支持。。。

我用的就是1.4.2 所以是这样的错误

文章标题：java源代码机器人 java iterator源码
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