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2006-11-08 Wed
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jar ¥Õ¥¡¥¤¥ë¤Ë¤Ï¥µ¡¼¥Ó¥¹¤Î¼ÂÁõ¤òÄêµÁ¤¹¤ë¹àÌܤ¬¤¢¤ë¡¥META-INF/services ¥Ç¥£¥ì¥¯¥È¥ê¤ËÃÖ¤«¤ì¤Æ¤¤¤ë¥Õ¥¡¥¤¥ë¤ò´ð¤Ë¡¤¥µ¡¼¥Ó¥¹¤Î¼ÂÁõ¤ò¥æ¡¼¥¶¥×¥í¥°¥é¥à¤Ê¤·¤Ë¡¤¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¦¤ËÅÐÏ¿¤¹¤ë¤³¤È¤¬²Äǽ¤Ë¤Ê¤ëµ¡¹½¤Ç¤¢¤ë¡¥
Î㤨¤Ð Image I/O ¤ä Midi¡¤JNDI ¤Ê¤É¤Ç»È¤ï¤ì¤Æ¤¤¤ë¤è¤¦¤À¡¥¥¯¥é¥¹¥Ñ¥¹¤òÄ̤·¤Æ¤ª¤¯¤À¤±¤Ç¼ÂÁõ¥¯¥é¥¹¤¬ÆÀ¤é¤ì¤ë¤Î¤ÇÊØÍø¤Ã¤Ý¤¤¡¥
¤³¤Îµ¡¹½¤Î»È¤¤Êý¤Ï META-INF/services/ ¥Ç¥£¥ì¥¯¥È¥ê°Ê²¼¤Ë SPI ¤Î¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹Ì¾¤Î¥Õ¥¡¥¤¥ë¤òºîÀ®¤·¡¤¤½¤Î¥Õ¥¡¥¤¥ë¤ÎÃæ¤Ë¼ÂÁõ¥¯¥é¥¹¤Î̾Á°¤ò½ñ¤¯¡¥¤³¤¦¤¹¤ë¤³¤È¤Ç¥æ¡¼¥¶¥×¥í¥°¥é¥à¦¤ÇÆÃÊ̤ʽèÍý¤Ê¤·¤Ë¡¤ÆÃÄê¤Î¥¯¥é¥¹·Ðͳ¤Ç¼ÂÁõ¥¯¥é¥¹¤Î Class ¥ª¥Ö¥¸¥§¥¯¥È¤òÆÀ¤ë¤³¤È¤¬¤Ç¤¤ë¡¥
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CharEncoder getEncoder(String encodingName) {
Iterator ps = Service.providers(CharCodec.class);
while (ps.hasNext()) {
CharCodec cc = (CharCodec)ps.next();
CharEncoder ce = cc.getEncoder(encodingName);
if (ce != null)
return ce;
}
return null;
}
¤³¤Î¤è¤¦¤Ê¥³¡¼¥É¤Ç CharCodec SPI ¤Î¼ÂÁõ¥¯¥é¥¹¤òÆÀ¤é¤ì¤ë¤Î¤À¡¥¤·¤«¤·¡¤Java SE 5 ¤Ë¤Ï Service ¤È¤¤¤¦¥¯¥é¥¹¤Ï¸ºß¤·¤Ê¤¤¡¥¤³¤Îµ¡¹½¤ò¼ÂºÝ¤Ë»È¤¦¤È¤¤Ë¤Ï¤É¤Î¥¯¥é¥¹¤ò»È¤¨¤Ð¤è¤¤¤Î¤«¤¬¤ï¤«¤é¤Ê¤«¤Ã¤¿¤Î¤ÇÄ´¤Ù¤Æ¤ß¤¿¡¥¡Ö¤³¤¦¤¹¤Ù¤¡×¤È¤¤¤¦Àµ¼°¤Êʸ½ñ¤Ï¸«¤Ä¤«¤é¤Ê¤«¤Ã¤¿¤â¤Î¤Î¡¤¤Þ¤¡¤Ç¤¤¿¤Î¤ÇÎɤ·¤È¤¹¤ë¡¥
·ëÏÀ¤È¤·¤Æ¤Ï javax.imageio.spi.ServiceRegistry ¤ò»È¤¦¡¥Image I/O ¤Ï»È¤ï¤Ê¤¤¤Î¤Ë¡¤imageio ¥Ñ¥Ã¥±¡¼¥¸¤ò»È¤¦¤Î¤Ï²¿¤È¤âµ¤»ý¤Á°¤¤¤¬Â¾¤ËŬÅö¤Ê¥¯¥é¥¹¤â¸«¤Ä¤«¤é¤Ê¤«¤Ã¤¿¤Î¤Ç»ÅÊý¤Ê¤¤¤«¡¥
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