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
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 ......
ÓÃJava±àдӦÓÃʱ£¬ÓÐʱÐèÒªÔÚ³ÌÐòÖе÷ÓÃÁíÒ»¸öÏֳɵĿÉÖ´ÐгÌÐò»òϵͳÃüÁÕâʱ¿ÉÒÔͨ¹ý×éºÏʹÓÃJavaÌṩµÄRuntimeÀàºÍProcessÀàµÄ·½·¨ÊµÏÖ¡£ÏÂÃæÊÇÒ»ÖֱȽϵäÐ͵ijÌÐòģʽ£º
...
Process process = Runtime.getRuntime().exec(".\\p.exe");
process.waitfor( );
...
ÔÚÉÏÃæµÄ³ÌÐòÖУ¬µÚÒ»Ðеē.\\p.exe& ......
transientÊÇJavaÓïÑԵĹؼü×Ö£¬ÓÃÀ´±íʾһ¸öÓò²»ÊǸöÔÏó´®Ðл¯µÄÒ»²¿·Ö¡£µ±Ò»¸ö¶ÔÏó±»´®Ðл¯µÄʱºò£¬transientÐͱäÁ¿µÄÖµ²»°üÀ¨ÔÚ´®Ðл¯µÄ±íʾÖУ¬È»¶ø·ÇtransientÐ͵ıäÁ¿ÊDZ»°üÀ¨½øÈ¥µÄ!
public class User implements Serializable{
private static final long serialVersionUID = 1L;
private Integer id;
......
½ñÌìºÍ´ó¼ÒÒ»ÆðѧϰJavaµÄÉè¼ÆÄ£Ê½¡£±¾È˵Äˮƽ²»ÊǺܸߣ¬ÕâϵÁÐÎÄÕÂÖ»ÊÇ×Ô¼ºÑ§Ï°µÄ¹ý³Ì£¬²¢Ï£ÍûÄÜͬ´ó¼Ò·ÖÏí¾Ñé¡£
ÏÈ˵ÏÂÎÒ¶Ô¹¤³§Ä£Ê½µÄÀí½â£ºµ±ÎÒÃÇÐèҪij¸ö¶ÔÏóʱ£¬×îÖ±½ÓµÄ°ì·¨ÊÇ¿´µ½Õâ¸ö¶ÔÏó¾ÍÄùýÀ´¡£µ«Êǵ±¶ÔÏó·Ç³£¶àµÄʱºò£¬ÕÒÆðÀ´¾ÍºÜ²»·½±ã¡£Õâʱ¾ÍÐèÒªÒ»¸öÖнéÀ´°ïÖúÎÒÃÇÈ¡µÃÏëÒªµÄ¶«Î÷£¬Õâ¸öÖнé¾ÍÊǹ¤³§£¨fa ......