su -l
/usr/sbin/alternatives --config java |
像我想要用JDK 1.8 所帶的JRE ，我就必須輸入4後按Enter
3.切換JDK
|
/usr/sbin/alternatives --config javac
wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u45-b14/jdk-8u45-linux-x64.rpmpackage getmac;import java.net.InetAddress;import java.net.NetworkInterface;import java.net.SocketException;import java.net.UnknownHostException;import java.util.logging.Level;import java.util.logging.Logger;/**** @author flowercatswets*/public class GetMac {public static void main(String[] args) {byte[] mac;try {//取得本機的IPInetAddress address = InetAddress.getLocalHost();//依據取得的IP取得網卡NetworkInterface ni = NetworkInterface.getByInetAddress(address);//取出網卡macmac = ni.getHardwareAddress();//把網卡mac格式化輸出 xx-xx-xx-xx-xx-xxfor (int i = 0; i < mac.length; i++) {System.out.format("%02X%s", mac[i], (i < mac.length - 1) ? "-": "");}System.out.print("\n");} catch (UnknownHostException | SocketException ex) {Logger.getLogger(GetMac.class.getName()).log(Level.SEVERE, null, ex);}}}
zip logs.zip logs/*unzip logs.zip 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
public class MyServerSocket {
//宣告區
ServerSocket server;
ObjectInputStream in;
ObjectOutputStream out;
BufferedReader buffer;
Thread inputThread;
Thread recThread;
boolean isClose = false;
Socket client;
public MyServerSocket() {
try {
//ServerSocket Listen 在本機的5678 port
server = new ServerSocket(5678);
//輸出己啟動伺服器資訊
System.out.println("伺服器啟動於 : "
+ InetAddress.getLocalHost().getHostAddress() + ":"
+ server.getLocalPort());
//把連線過來的Client端交由另一個socket處理
client=server.accept();
//輸出訊息己有使用者連進來
System.out.println("Client is connected");
//將Server端的標準輸出入設為鍵盤
buffer=new BufferedReader(new InputStreamReader(System.in));
//取得與此使用者的輸出管道
out=new ObjectOutputStream(client.getOutputStream());
//取得與此使用者的輸入管道
in=new ObjectInputStream(client.getInputStream());
} catch (IOException e) {
e.printStackTrace();
}
//用一個執行序負毒處理接收到的訊息
recThread = new Thread(new Runnable() {
@Override
public void run() {
recMessage();
}
});
//啟動接收訊息執行序
recThread.start();
//使用一個執行序來處理Server端的鍵盤輸入
inputThread = new Thread(new Runnable() {
@Override
public void run() {
keyin();
}
});
//啟動server端輸入執行序
inputThread.start();
}
//Server端鍵盤處理函式
private void keyin() {
try {
String line;
while (!(line = buffer.readLine()).equals("-1")) {
System.out.println("傳送:" + line);
write(line);
Thread.sleep(100);
}
isClose = true;
close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//接收訊息處理函式
private void recMessage() {
String recText = "";
while (!isClose) {
try {
recText = in.readUTF();
System.out.println("接收：" + recText);
Thread.sleep(100);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
輸出資料到client端函式
private void write(String text) {
try {
out.writeUTF(text);
out.flush();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void close() {
try {
recThread.interrupt();
inputThread.interrupt();
out.flush();
out.close();
in.close();
client.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//主程式
public static void main(String arg[])
{
new MyServerSocket();
}
}
MySocket.javaimport java.io.IOException;
import java.net.Socket;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.UnknownHostException;
public class MySocket {
Socket client;
ObjectInputStream in;
ObjectOutputStream out;
BufferedReader buffer;
Thread inputThread;
Thread recThread;
boolean isClose = false;
public MySocket() {
String ServerIP = "127.0.0.1";
try {
client = new Socket(ServerIP, 5678);
in = new ObjectInputStream(client.getInputStream());
out = new ObjectOutputStream(client.getOutputStream());
buffer = new BufferedReader(new InputStreamReader(System.in));
} catch (IOException e) {
e.printStackTrace();
}
recThread = new Thread(new Runnable() {
@Override
public void run() {
recMessage();
}
});
recThread.start();
inputThread = new Thread(new Runnable() {
@Override
public void run() {
keyin();
}
});
inputThread.start();
}
private void keyin() {
try {
String line;
while (!(line = buffer.readLine()).equals("-1")) {
System.out.println("傳送:" + line);
write(line);
Thread.sleep(100);
}
isClose = true;
close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void recMessage() {
String recText = "";
while (!isClose) {
try {
recText = in.readUTF();
System.out.println("接收：" + recText);
Thread.sleep(100);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private void write(String text) {
try {
out.writeUTF(text);
out.flush();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void close() {
try {
recThread.interrupt();
inputThread.interrupt();
out.flush();
out.close();
in.close();
client.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void main(String args[]) {
new MySocket();
}
}
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.net.UnknownHostException;
public class UDPServer {
boolean isClose = false;
byte[] Bytebuffer = new byte[65507];
DatagramPacket dp = new DatagramPacket(Bytebuffer, Bytebuffer.length);
DatagramSocket ds;
Thread recThread;
public UDPServer() {
try {
ds = new DatagramSocket(5678);
System.out.println("伺服器啟動於 : "
+ InetAddress.getLocalHost().getHostAddress() + ":"
+ ds.getLocalPort());
recThread = new Thread(new Runnable() {
@Override
public void run() {
recMessage();
}
});
recThread.start();
} catch (SocketException e) {
e.printStackTrace();
} catch (UnknownHostException e) {
e.printStackTrace();
}
}
private void recMessage() {
try {
String msg = "";
while (!isClose) {
ds.receive(dp);
msg = new String(dp.getData(), 0, dp.getLength());
System.out.println("傳來的訊息 : " + msg);
Thread.sleep(100);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void main(String args[]) {
new UDPServer();
}
}
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.net.UnknownHostException;
public class UDPClient {
DatagramPacket dp;
DatagramSocket ds;
Thread inputThread;
BufferedReader buffer;
public UDPClient() {
System.out.println("請輸入要傳送的訊息 : ");
String msg = "Key in";
buffer = new BufferedReader(new InputStreamReader(System.in));
try {
ds=new DatagramSocket();
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
inputThread = new Thread(new Runnable() {
@Override
public void run() {
keyin();
}
});
inputThread.start();
}
private void keyin() {
try {
String line;
while (!(line = buffer.readLine()).equals("-1")) {
System.out.println("傳送:" + line);
write(line);
Thread.sleep(100);
}
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
private void write(String text) {
try {
dp = new DatagramPacket(text.getBytes(), text.getBytes().length,
InetAddress.getByName("127.0.0.1"), 5678);
ds.send(dp);
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void main(String args[])
{
new UDPClient();
}
}
System.Diagnostics.Process.Start("iexplore.exe", "https://10.253.253.245/imme0000/IMME0002S01.aspx");
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApplication14
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
reSet();
}
//用來裝Button的限列
Button[] btn = new Button[25];
//用來新增賓果用的Button
Button newBtn;
//計算Button位置用
int count = 0;
//設算Buton在那一行
int column = 0;
//計算Button在那一列
int row = 0;
//是否做過第一次初始化(加入25個按鈕)
bool first_init = false;
//紀錄點下的按鈕
int[] click_btn = new int[25];
//是否已連線
bool haveline;
/// <summary>
/// 重設遊戲
/// </summary>
private void reSet()
{
haveline = false;
if (!first_init)
initButtion();
else
initButtionSecond();
getRandom();
}
/// <summary>
/// 第一次初始化Button陣列
/// </summary>
private void initButtion()
{
for (int i = 0; i < 25; i++)
{
Button newBtn = new Button();
newBtn.Location = new Point(12 + (column * 75), 75 + ((row - 1) * 75));
newBtn.Text = (count + 1).ToString();
newBtn.Size = new Size(75, 75);
newBtn.TabIndex = count + 1;
newBtn.Click += click_evn;
newBtn.Name = i.ToString();
btn[i] = newBtn;
this.Controls.Add(newBtn);
count += 1;
column += 1;
if (count % 5 == 0)
{
column = 0;
row += 1;
}
}
first_init = true;
}
//重設Button
private void initButtionSecond()
{
for (int i = 0; i < 25; i++)
{
btn[i].BackColor = default(Color);
btn[i].Enabled = true;
btn[i].UseVisualStyleBackColor = true;
click_btn[i] = 0;
}
}
//Button陣列按鈕事件
private void click_evn(object sender, EventArgs e)
{
if (!haveline)
{
Button btn = (Button)sender;
btn.Enabled = false;
click_btn[Convert.ToInt32(btn.Name)] = 1;
haveline = checkLink();
if (haveline)
MessageBox.Show("You Win");
}
}
//產生1~25不重覆亂數
private void getRandom()
{
Random r = new Random();
int[] num = new int[25];
for (int i = 0; i < 25; i++)
{
num[i] = i + 1;
}
int temp;
for (int i = 0; i < 25; i++)
{
int R = r.Next(25);
temp = num[i];
num[i] = num[R];
num[R] = temp;
}
for (int i = 0; i < 25; i++)
{
btn[i].Text = num[i].ToString();
}
}
/// <summary>
/// 檢查是否有連線
/// </summary>
/// <returns>true (3條連線) / false 未滿3條 </returns>
private bool checkLink()
{
//目前有幾條連線
int totalLine = 0;
//是否已達成3條連線
bool haveLine = false;
//判斷橫五公格
for (int i = 0; i < 5; i++)
{
if (click_btn[0 + i * 5].ToString() + click_btn[1 + i * 5].ToString() + click_btn[2 + i * 5].ToString() + click_btn[3 + i * 5].ToString() + click_btn[4 + i * 5].ToString() == "11111")
{
for (int j = 0; j < 5; j++)
{
btn[j + i * 5].BackColor = Color.Pink;
}
totalLine += 1;
}
}
//判斷直五公格
for (int i = 0; i < 5; i++)
{
if (click_btn[i].ToString() + click_btn[5 + i].ToString() + click_btn[10 + i].ToString() + click_btn[15 + i].ToString() + click_btn[20 + i].ToString() == "11111")
{
for (int j = 0; j < 5; j++)
{
btn[j * 5 + i].BackColor = Color.Pink;
}
totalLine += 1;
}
}
//判斷斜線\
if (click_btn[0].ToString() + click_btn[6].ToString() + click_btn[12].ToString() + click_btn[18].ToString() + click_btn[24].ToString() == "11111")
{
for (int j = 0; j < 5; j++)
{
btn[j * 6].BackColor = Color.Pink;
}
totalLine += 1;
}
//判斷斜線/
if (click_btn[4].ToString() + click_btn[8].ToString() + click_btn[12].ToString() + click_btn[16].ToString() + click_btn[20].ToString() == "11111")
{
for (int j = 1; j < 6; j++)
{
btn[j * 4].BackColor = Color.Pink;
}
totalLine += 1;
}
//是否達成3連線
if (totalLine >= 3)
haveLine = true;
return haveLine;
}
/// <summary>
/// 重設按鈕事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button1_Click(object sender, EventArgs e)
{
reSet();
}
}
}
