javaÎļþ¹ýÂËÆ÷µÄʹÓÃ
javaÎļþ¹ýÂËÆ÷µÄʹÓôúÂëÈçÏ£º
²âÊÔ´úÂ룺package file;
import java.io.File;
public class fileFilter {
public static void main(String[] args) {
File file = new File("d:\\");//ÉèÖÃÎļþ·¾¶
for (File fileList : file.listFiles(new file.MyFileFilter())) {
System.out.println(fileList.getName());
}
}
}
¹ýÂËÆ÷´úÂ룺
package file;
import java.io.File;
import java.io.FileFilter;
public class MyFileFilter implements FileFilter {
//ʵÏÖFileFilterµÄ·½·¨
public boolean accept(File arg0) {
if (arg0.getName().endsWith(".class")) {
return true;
}
return false;
}
}
Ïà¹ØÎĵµ£º
¶ÔÓÚÕâ¸öϵÁÐÀïµÄÎÊÌ⣬ÿ¸öѧJavaµÄÈ˶¼Ó¦¸Ã¸ã¶®¡£µ±È»£¬Èç¹ûÖ»ÊÇѧJavaÍæÍæ¾ÍÎÞËùνÁË¡£Èç¹ûÄãÈÏΪ×Ô¼ºÒѾ³¬Ô½³õѧÕßÁË£¬È´²»ºÜ¶®ÕâЩÎÊÌ⣬Ç뽫Äã×Ô¼ºÖعé³õѧÕßÐÐÁС£ÄÚÈݾùÀ´×ÔÓÚCSDNµÄ¾µäÀÏÌù¡£
¡¡¡¡ÎÊÌâÒ»£ºÎÒÉùÃ÷ÁËʲô£¡
String s = "Hello world!";
¡¡¡¡Ðí¶àÈ˶¼×ö¹ýÕâÑùµÄÊÂÇ飬µ«ÊÇ£¬ÎÒÃǵ½µ×Éù ......
JavaµÄException·ÖΪÁ½À࣬һÀàÊÇRuntimeException¼°Æä×ÓÀ࣬ÁíÍâÒ»Àà¾ÍÊÇchecked
Exception¡£JavaÒªÇóº¯Êý¶ÔûÓб»catch´¦ÀíµôµÄchecked
Exception£¬ÐèÒª½«ÆäдÔÚº¯ÊýµÄÉùÃ÷²¿·Ö¡£È»¶ø£¬ÕâÒ»ÒªÇó³£³£¸ø³ÌÐòÔ±´øÀ´Ò»Ð©²»±ØÒªµÄ¸ºµ£¡£
ΪÁ˱ÜÃâÔÚº¯ÊýÉùÃ÷ÖÐдthrows²¿·Ö£¬ÔÚJavaÏîÄ¿ÀïÃæ³£³£¿ÉÒÔ¿´µ½ÒÔÏ´úÂëÓÃÀ´‘Í ......
¶¨Òå:
SingletonģʽÖ÷Òª×÷ÓÃÊDZ£Ö¤ÔÚJavaÓ¦ÓóÌÐòÖУ¬Ò»¸öÀàClassÖ»ÓÐÒ»¸öʵÀý´æÔÚ¡£
Ôںܶà²Ù×÷ÖУ¬±ÈÈ罨Á¢Ä¿Â¼ Êý¾Ý¿âÁ¬½Ó¶¼ÐèÒªÕâÑùµÄµ¥Ï̲߳Ù×÷¡£
»¹ÓÐ, singletonÄܹ»±»×´Ì¬»¯;
ÕâÑù£¬¶à¸öµ¥Ì¬ÀàÔÚÒ»Æð¾Í¿ÉÒÔ×÷Ϊһ¸ö״̬²Ö¿âÒ»ÑùÏòÍâÌṩ·þÎñ£¬±ÈÈ磬ÄãÒªÂÛ̳ÖеÄÌû×Ó¼ÆÊýÆ÷£¬Ã¿´Îä¯ÀÀÒ»´ÎÐèÒª¼ÆÊý£¬µ¥Ì¬ÀàÄÜ·ñ ......
1.¼¯ºÏµÄÌØµã£º
¶¼Î»ÓÚ java.util°üÖУ¬²»ÄÜ´æ·Å»ù±¾ÀàÐ͵ÄÊý¾Ý£¬¶øÖ»ÄÜ´æ·Å¶ÔÏóµÄÒýÓ㬲Ù×÷µÄÊýÄ¿¿ÉÒÔ²»¹Ì¶¨£¨ÀàËÆÓÚ¶¯Ì¬Êý×飩¡£
2.·ÖÀࣺ
ÓÐÈý¸öÀࣺ
a.Set(¼¯)£º¶ÔÏó²»°´Ìض¨·½Ê½ÅÅÐò£¬Ã»ÓÐÖØ¸´ÔªËØ¡£Õâ¸öÓëÊýѧÖеļ¯ºÏ¸ÅÄî×îÏàËÆ¡£
b.List(Áбí)£º°´ÕÕË÷ÒýλÖÃÅÅÐò£¬¿ÉÒÔÓÐÖØ¸´ÔªËØ£¬ÔÊÐí°´ÕÕ¶ÔÏóÔÚ¼¯ºÏÖеÄË ......
/**
* ´´½¨ËõÂÔͼƬ
*
* @param orgpath
* @param filename
* @return
* @description: ÃèÊö
*/
//´Ë·½·¨¶ÔÓÚsshÏîÄ¿²¢ÇÒÕë¶Ô ÉÏ´«¹¦ÄÜʱ£¬·Ç³£ÓÐÓÃ
public static Boolean createAbbreviateImg(String orgpath, String filename) {
Boolea ......