Õë¶Ôjava»ÃæÉÁ˸
ÈçÌ⣡½â¾öµÄ·½·¨ÊÇÔö¼ÓÒ»¸öÐé±³¾°¡£Ö®ºó°ÑÐé±³¾°Ôö¼Óµ½ÔÀ´µÄFrameÉÏ¡£ÓÉÓÚrepaint()µ½paint()ÖмäÉæ¼°µ½update(),ËùÒÔ½â¾öÎÊÌâµÄ
¹Ø¼üÊÇÔÚÖØÐ´update(),ÔÚÕâ¸ö·½·¨ÖÐʵÏÖÐé±³¾°µÄÌí¼Ó~~
@Override
public void update(Graphics g)
{
if(offScreenImage == null)
{
offScreenImage = this.createImage(800, 600);
}
/*
*¶¨ÒåÔÚÐé±³¾°ÖлµÄ“»±Ê”
*/
Graphics graOffScreen = offScreenImage.getGraphics();
/*
*ÖØ»Ðé±³¾°
*/
Color c = graOffScreen.getColor();
graOffScreen.setColor(Color.GREEN);
graOffScreen.fillRect(150, 150, 800, 600);
graOffScreen.setColor(c);
paint(graOffScreen);
g.drawImage(offScreenImage, 0, 0, null);
}
Ïà¹ØÎĵµ£º
ÔÚJAVAÖУº
1. º¯ÊýÖØÔØÊÇÒ»¸öÀàÖÐÉùÃ÷Á˶à¸öͬÃûµÄ·½·¨£¬µ«Óв»Í¬µÄ²ÎÊý¸öÊýºÍ²ÎÊýÀàÐÍ¡£
2. º¯ÊýÖØ¹¹ÊÇÖ¸ÔÚ×ÓÀàÖÐÉùÃ÷Ó븸ÀàͬÃûµÄ·½·¨£¬´Ó¶ø¸²¸ÇÁ˸¸ÀàµÄ·½·¨¡£Öع¹½â¾öÁË×ÓÀàÓ븸ÀàµÄ²îÒìÎÊÌâ¡£
Àý×ÓÈçÏ£º
//ÖØÔØ
class A {
public d (){};
public d (q){};
public d (q,w){};
}
//ÖØÐ´ ......
¾Í¶àÏß³ÌÀ´Ëµ£¬ÎÒÃÇ¿ªÊ¼ÉèÏëÖ»ÓÐÁ½¸öỊ̈߳¨>2ʱÊDz»ÊÇËãÊýѧ¹éÄÉ·¨£¿£©ÄÇôÈç¹ûÁ½¸ö¶ÀÁ¢µÄÏ̻߳ᷢÉúÊ²Ã´ÄØ£¿
1¡£µ±Ò»¸öÏ߳̽øÈëmoniter£¨Ò²¾ÍÊÇ˵վÓÃÒ»¸öobject£©£¬ÁíÒ»¸öÏß³ÌÖ»Óеȴý»ò·µ»Ø£¬¶øÎÒÃǰѷµ»Ø¾Í³ÆÎªÒ»ÖÖģʽ£¬ÕâÖÖģʽµÄÓ¢ÎÄÊÇBalking¡£
2¡£ÕâÁ½¸öÏ߳̿ÉÒÔÊÇÓÐÐòµÄÖ´ÐУ¬¶ø²»ÊÇÈÃOSÀ´µ÷¶È£¬ÕâʱΠ......
ÕâÀïÎÒÃÇÔÙÀí½âÁËAJAXºó£¬¿ªÊ¼À´ÓÃʵÀý¸ÐÊÜAJAXµÄÁ¦Á¿¡£
½ñÌìÎÒ×îºóҪʵÏÖµÄЧ¹û£¬µ±Êó±ê·Åµ½Í¼Æ¬ÉÏʱ»á¸ù¾Ý£¬»á°ÑÊý¾Ý¿â¿âÀïµÄÊý¾Ý¶Á³ö£¬Í¨¹ýÏÔʾ¿òÏÔʾ³öÀ´¡£Õâ¸öÔںܶàÍøÉÏÉ̵궼ÓÐÓõ½ÕâÀïЧ¹û£¬ÎÒÃÇÕâÀïÓÃAJAXÀ´ÊµÏÖÕâ¸öЧ¹û¡£Õâ¸öʵÀýÀï½áºÏÁËMySql¡¢Servlet»¹ÓÐJs£¬ÀíÂÛÐÔºÜÉÙ£¬µ«Í¨¹ýʵ¼ùÀ´¸ÐÊÜÀíÂÛ֪ʶ¡£
......
JavaµÚÈý·½library ecosystemÊÇÒ»¸öºÜ¹ãÀ«µÄ·¶³ë¡£²»¾ÃǰÓÐÈË׫ÎÄ£ºÃ¿¸öÏîÄ¿ÖУ¬Äã±ØÐëÖªµÀµÄ11¸öJavaµÚÈý·½Àà¿â¡£
µ¥Ôª²âÊÔ
1.DBUnit
DBunitÊÇÒ»¸ö»ùÓÚjunitÀ©Õ¹µÄÊý¾Ý¿â²âÊÔ¿ò¼Ü¡£ËüÌṩÁË´óÁ¿µÄÀà¶ÔÓëÊý¾Ý¿âÏà¹ØµÄ²Ù×÷½øÐÐÁ˳éÏóºÍ·â×°¡£
2.MOckito
MockitoÊÇÒ»¸öÕë¶ÔJavaµÄmocking¿ò¼Ü¡£Äã¿ÉÒÔʹÓüò½àµÄAPI±àд³ö ......