Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

javaÖÐʹ´°¿Ú¾ÓÖÐÏÔʾ

Èç¹ûҪʹÖ÷´°¿Ú ¾ÓÖÐÒ»°ãʹÓÃÏÂÃæµÄ·½·¨£º
import javax.swing.*;
import java.awt.*;
public class ToCenter
{
  public ToCenter(JFrame frame)
   {
       //---------------------------ÉèÖô°¿Ú¾ÓÖÐ----------------------------------------------------------
        int windowWidth = frame.getWidth();                     //»ñµÃ´°¿Ú¿í
        int windowHeight = frame.getHeight();                   //»ñµÃ´°¿Ú¸ß
         Toolkit kit = Toolkit.getDefaultToolkit();              //¶¨Ò幤¾ß°ü
         Dimension screenSize = kit.getScreenSize();             //»ñÈ¡ÆÁÄ»µÄ³ß´ç
        int screenWidth = screenSize.width;                     //»ñÈ¡ÆÁÄ»µÄ¿í
        int screenHeight = screenSize.height;                   //»ñÈ¡ÆÁÄ»µÄ¸ß
         frame.setLocation(screenWidth/2-windowWidth/2, screenHeight/2-windowHeight/2);//ÉèÖô°¿Ú¾ÓÖÐÏÔʾ
         //------------------------------------------------------------------------------------------------
   }
}
µ±È»ÄãÒ²¿ÉÒÔÈÃÒ»¸öWindow¶ÔÏó¡¢JWindow¶ÔÏó»òFrame¶ÔÏó¾ÓÖУ¬ÒÔÏÂÊǸüͨÓõķ½·¨£º
      Toolkit kit = Toolkit.getDefaultToolkit();&


Ïà¹ØÎĵµ£º

Effective Java ѧϰ±Ê¼Ç£¨£±£©

ͨ³£Çé¿öÏ£¬ÎÒÃÇÔÚдһ¸öÀàʱ£¬Ò»°ã»á¸³ÓèËüÒ»¸ö»ò¼¸¸öpublicµÄ¹¹Ô캯Êý£¬ÈÃÍⲿ³ÌÐòÄܹ»´´½¨¶ÔÏó.¡¡È»¶ø£¬ÔÚeffective¡¡java ÖУ¬´ÓÁíÒ»¸ö½Ç¶È¸æ½ëÎÒÃÇÔÚʹÓÃpublicµÄ¹¹Ô캯Êýǰ£¬ÏÈ¿¼ÂÇÓÃpublic µÄ¾²Ì¬º¯ÊýÀ´´´½¨¶ÔÏó.¡¡
ÆäÓŵãÈçÏ£º
£±.¡¡Ò»¸ö¾²Ì¬µÄ¹¤³§º¯Êý£¬¿ÉÒÔÈ¡²»Í¬µÄÃû×Ö.¡¡¶ø¹¹Ô캯ÊýµÄÃû×ÖÖ»ÄÜÓëÀàͬÃû.¡¡
......

Java Reflect ·´Éä ѧϰ±Ê¼Ç3 ²Ù×÷

       Java Reflect±àд ͨÓÃÊý×éÀ©Õ¹Àà
 
package com.accp.array;

import java.lang.reflect.Array;

public class GrowArrayTest {
public static void main(String[] args) {
Integer[] array = {1,2,3,4}; //ͨÓÃÀ©Õ¹
arrayPrint(arra ......

ʹÓÃJava½øÐÐͼÏñ´¦Àí

¡¾Òý×Ô¼üÅÌÉϵÄÎèÕߵIJ©¿Í¡¿Í¼Ïñ±àÂëÊä³öµÄ·½·¨£¬Ìṩ±àÂë½ø¶È¼àÌý£¬ÉèÖñàÂëÖÊÁ¿µÄÖ§³Ö£¨Ìض¨¸ñʽ£¬ÀýÈçJPG£©¡£
Õâ¸ö·½·¨Ö§³ÖµÄ±àÂë¸ñʽÒÀÀµÔËÐл·¾³ÀïImageIOÒѾ­×¢²áImageWriter¼¯ºÏ¡£
Java SE 6ÖеÄImageIOĬÈÏÖ§³ÖJPG£¬BMP£¬PNG£¬GIFµÈ¸ñʽ£¬Ò²¿ÉÒÔͨ¹ý·Ç±ê×¼Àà¿âÌí¼ÓImageIO¶ÔͼÏñ¸ñʽµÄÖ§³Ö£¬±ÈÈç°²×°JAI_ImageIO¡ ......

Javaµ÷ÓÃOracle´æ´¢¹ý³Ì


µÚÒ»ÖÖÇé¿ö£ºÎÞ·µ»ØÖµ.
      create or replace procedure test_a(param1 in varchar2,param2 in varchar2) as
       begin
            insert into test value(param1,param2);
  &nb ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ