藍色代表憂鬱 那我代表什麼

Timer的使用如下:
1.先定義TimerTask執行或顯示的內容.
2.再建立Timer的物件去schedule計時器.
Timer的使用有兩種:

 
簡介:點選Gui的Item..執行程式..後面帶連線的IP..GUI及連線的IP都額外寫在兩個參數檔執行.
--------------------------以下為Code----------------------------------------------------
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;

 
依照選定的日期判斷資料夾內的影片..再匯出到一個文字檔.
----------------------我是分格線------------------------------
import javax.swing.*;
import java.awt.*;
import java.text.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;

 (For J2SE 1.4.2)
1. Date to String
Date dNow = new Date();
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
StringBuffer sbNow = new StringBuffer();
sbNow = formatter.format(dNow, sbNow, new FieldPosition(0));
String sNow = sbNow.toString();
2. String to Date
String sDate = "2005-01-01";
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
Date dDate = formatter.parse(sDate,new ParsePosition(0));

數字轉字串
1. integer to String :
int i = 20;
String str = Integer.toString(i);
or
String str = "" + i
2. double to String :
String str = Double.toString(i);
3. long to String :
String str = Long.toString(l);
4. float to String :
String str = Float.toString(f);
字串轉數字
1.String to integer :
str = "20";
int i = Integer.valueOf(str).intValue();
or
int i = Integer.parseInt(str);
2.String to double :
double d = Double.valueOf(str).doubleValue();
3. String to long :
long l = Long.valueOf(str).longValue();
or
long l = Long.parseLong(str);
4.String to float :
float f = Float.valueOf(str).floatValue();
十進位,二進位與十六進位數字的轉換
1. decimal to binary :
int i = 20;
String binstr = Integer.toBinaryString(i);
2. decimal to hexadecimal :
int i = 20;
String hexstr = Integer.toString(i, 16);
or
String hexstr = Integer.toHexString(i);
or (with leading zeroes and uppercase)
public class Hex {
public static void main(String args[]){
int i = 20;
System.out.print
(Integer.toHexString( 0x10000 | i).substring(1).toUpperCase());
}
}
3. hexadecimal (String) to integer :
int i = Integer.valueOf("B8DA3", 16).intValue();
or
int i = Integer.parseInt("B8DA3", 16);
ASCII Code的轉換
1.ASCII code to String
int i = 64;
String aChar = new Character((char)i).toString();
2.integer to ASCII code (byte)
char c = 'A';
int i = (int) c; // i will have the value 65 decimal
3.To extract Ascii codes from a String
String test = "ABCD";
for ( int i = 0; i < test.length(); ++i ) { char c = test.charAt( i ); int i = (int) c; System.out.println(i); } Boolean值的轉換
1.integer to boolean
b = (i != 0);
2.boolean to integer
i = (b)?1:0;

連上網站
http://www.ej-technologies.com/
下載 exe4j安裝檔..
再去下載Keygen檔

try
{
Runtime.getRuntime().exec("Shutdown.exe -s -t 30");
}
catch (Exception e)
{
System.out.println(e.getMessage());
}

//statment
Image ic=Toolkit.getDefaultToolkit().getImage("xxx.jpg");
setIconImage(ic);
//statment

long AverageTime =0; // 計算平均處理時間使用
long StartTime = System.currentTimeMillis(); // 取出目前時間
// ==============================
// 你的程式
// ==============================
long ProcessTime = System.currentTimeMillis() - StartTime; // 計算處理時間
AverageTime += ProcessTime; // 累積計算時間