package com.cjh.thread;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.Iterator;
/**
* ʹÓÃjavaÏß³ÌɨÃè¾ÖÓòÍøip¼òµ¥·½°¸
* @author Administrator
*
*/
public class LanIP {
public static void main(String[] args) {
System.out.println("¿ªÊ¼......");
LanIP ip = new LanIP();
ArrayList<String> list = ip.getLanIPArrayList();
System.out.println("×îºóÓжàÉÙ¸ö===>"+list.size());
}
public ArrayList<String> getLanIPArrayList() {
ArrayList<String> arrayIP = null;
& ......
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public static int seqSearch(int[] arr, int first, int last, int target) { for (int i = first; i < last; i++) if (arr[i] == target) return i; return -1; }
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public static int seqSearch( ......
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class Point< T>{ // ´Ë´¦¿ÉÒÔËæ±ãд±êʶ·ûºÅ£¬TÊÇtypeµÄ¼ò³Æ private T var ; // varµÄÀàÐÍÓÉTÖ¸¶¨£¬¼´£ºÓÉÍⲿָ¶¨ public T getVar(){ // ·µ»ØÖµµÄÀàÐÍÓÉÍⲿ¾ö¶¨ return var ; } public void setVar(T var){ // ÉèÖõÄÀàÐÍÒ²ÓÉÍⲿ¾ö¶¨ this.var = var ; } }; public class GenericsDemo06{ public static void main(String args[]){ Point< String> p = new Point< String>() ; // ÀïÃæµÄvarÀàÐÍΪStringÀàÐÍ p.setVar("it") ;& ......
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¡¡¡¡ÓïÑÔ¼æÈÝÐÔ(language compability)£¬Òª±£Ö¤ÒÑÓеĴʷ¨¡¢Óï·¨ÔÚа汾ÉϺ¬Òå²»±ä;ƽ̨¼æÈÝÐÔ(platform compability)£¬Òª±£Ö¤Ð°汾ÌṩµÄAPI(±ÈÈçjava.util/java.io)ÓëÒÑÓа汾±£³ÖÒ»Ö£¬ÔÓгÌÐò²»×ö¸Ä¶¯£¬¿ÉÒÔÔÚÐÂƽ̨ÉÏÔËÐУ¬ÇÒÐÐΪһÖÂ;ÒÆÖ²¼æÈÝÐÔ(migration compability)£¬¾ÍÊÇÒªÇóÔÓеijÌÐò¿ÉÒÔÖð²½Ç¨ÒƵ½ÐµÄƽ̨£¬¶ø²»ÊÇÒª¸ÄÏà¹ØÄ£¿é¶¼±ØÐë¸Ä¡£ÒÔ·ºÐÍΪÀý£¬Èç¹ûÓÐÁ½¸ö²»Ö§³Ö·ºÐ͵ÄÄ£¿é£¬ÓÃcollection½øÊý¾Ý½»»¥£¬µ±ÆäÖÐÒ»¸öÄ£¿éÉý¼¶µ½Ö§³Ö·ºÐͺó£¬ÊDz»»á¶ÔÁíÍâÒ»¸öÄ£¿é²úÉúÓ°ÏìµÄ¡£
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import java.awt.*;
import javax.swing.*;
import java.util.*;
public class ClockJFrame extends JFrame implements Runnable
{
private JTextField text;
private int r,a,b;//ʱÖӵİ뾶¡¢Ô²ÐÄ×ø±ê¡£
private int h,m,s;//±äÁ¿Ê±¡¢·Ö¡¢Ãë
private int hp,mp,sp;//ʱÖÓ¡¢·ÖÖÓ¡¢ÃëÖӵij¤¶È
public ClockJFrame(int h,int m,int s)
{
super("СʱÖÓ");
this.h=h;
this.m=m;
this.s=s;
r=150;
a=250;
b=200;
hp=(int)(0.5*r);
mp=(int)(4*r/5);
sp=(int)(0.95*r);
this.setSize(500,500);
this.setVisible(true);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
public void paint(Graphics g)
{
//Ïû³ý2DͼÐξâ³Ý£º
if(g instanceof Graphics2D)
{
Graphics2D gg=(Graphics2D)g;
gg.setRenderingHint(RenderingHints.KEY_ANTI ......
1.
£¨Ö÷°åÐòÁкţ©Motherboard serial number
import java.io.File;
import java.io.FileWriter;
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class MiscUtils {
private MiscUtils() { }
public static String getMotherboardSN() {
String result = "";
try {
File file = File.createTempFile("realhowto",".vbs");
file.deleteOnExit();
FileWriter fw = new java.io.FileWriter(file);
String vbs =
"Set objWMIService = GetObject(\"winmgmts:\\\\.\\root\\cimv2\")\n"
+ "Set colItems = objWMIService.ExecQuery _ \n"
+ " (\"Select * from Win32_BaseBoard\") \n"
+ "For Each objItem in colItems \n"
+ " Wscript.Echo objItem.SerialNumber \n"
+ " exit for ' do the first cpu only! \n"
+ "Next \n";
fw.write(vbs);
fw.close();
Process p = ......