JavaʵÑéÐĵÃ
µÚ1Õ JavaÓïÑÔ¸ÅÊö
1.1 ֪ʶ¸ÅÀ¨
1.2 ʵÑéÁ·Ï°
1.2.1 Ò»¸ö¼òµ¥µÄÓ¦ÓóÌÐò
classÀï²»ÄÜÔÙÓÐclass£¬ÎÞÂÛÓÐûÓÐpublicÐÞÊΣ¬class¶¼ÊÇÆ½ÐйØÏµ£¬ÔÚbinÎļþ¼ÐÖлá²úÉú¸÷×ÔµÄ×Ö½ÚÂëÎļþ¡£Í¬Ò»¸ö.javaÔ´ÎļþÖÐÖÁ¶àÓÐÒ»¸öpublic class£¬Èç¹û²»ÏëÔÙÒ»¸öÔ´ÎļþÖÐд¶à¸öÀ࣬¾Í¸÷×ÔдԴ³ÌÐò£¬²¢°ÑÀ๫Ó㬼´ÓÃpublicÐÞÊΡ£
1.2.2 Ò»¸ö¼òµ¥µÄJava Applet³ÌÐò
Java Applet»æÖÆÎÄ×Ö£ºg.drawString("ÕâÊÇÒ»¸öJava Applet³ÌÐò",20,40);
ǶÈëHTML£º<Applet code=FirstApplet.class width=300 height=300></Applet>
£¨´ËʱӦÓë.class×Ö½ÚÂë·ÅÓÚͬһÎļþ¼ÐÖУ©
1.3 ֪ʶÀ©Õ¹-ÁªºÏ±àÒë
ÿһ¸ö.javaÎļþÖеÄÀà¶¼Ó¦¸ÃÓÃpublicÐÞÊΣ¬²¢ÐèÒª±£´æÔÚͬһĿ¼ÖС£
Ïà¹ØÎĵµ£º
¼ÇµÃµÚÒ»´Î½Ó´¥±Õ°üµÄʱºò£¬¾õµÃºÜÆæ¹Ö£¬µ«´Ó×ÖÃæÉϺÜÄÇÀí½â±Õ°üÊ²Ã´ÍæÒ⣬ºÍ±Õ°üÓеÄÒ»±ÈµÄµ±Êô¿ØÖÆ·´×ª£¬ÕæÕýÀí½âÁ˺ó¾õµÃ¾Íƽ³£ÁË¡£±Õ°ü¶þ×ÖÆäʵÊǺܾµäµÄ£¬±Õ°ü´úÂëËù±íÏֵĶ«Î÷¿É²»¾ÍÊÇÒ»¸ö·â±ÕµÄ¡¢×Ô³ÉÒ»ÌåµÄ¹¦ÄÜ¿éÂ𣿼òµ¥µÄ˵£¬±Õ°ü¾ÍÊÇÔÚÄÚ²¿¶¨ÒåµÄ·½·¨£¬Äõ½ÍâÃæÈ¥Ê¹Ó᣾µäµÄjavascript±Õ°üÐÎʽÈçÏ£º
Java´ú ......
ÐèÒªdom4j.jarÎļþ £¬×ÔÐÐÏÂÔØ¡£ test.xml 1: <?xml version="1.0" encoding="gbk"?>
2:
3: <students>
4: <person sex="ÄÐ" age="21">
5: <id>1</id>
6: <name>ÕÂÖÎÅô</name>
7: <homepage&g ......
ʹÓÃÀàjava.io.File
1.»ñȡϵͳӲÅÌÐÅÏ¢£º
public static String getDiskInfo() {
StringBuffer sb=new StringBuffer();
File[] roots = File.listRoots();// »ñÈ¡´ÅÅÌ·ÖÇøÁбí
for (File file : roots) {
long totalSpace=file.getTotalSpace();
long freeSpace=file.getFreeSpace();
long usa ......
×î½üÓ¦ÀÏʦµÄÒªÇó¿´ÁËÊý¾Ý¿â¡£ÔÚÍøÉÏÕÒÁËÊÓÆµ£¬ÊǸö½ÌÓý»ú¹¹·¢µÄ¡£ÄǸöÊÓÆµ¿´µÃÎÒÖ±·¸À§£¬³ýÁËÀÏʦ½²¿Î½²´íµÄʱºò¡£
ÊÓÆµ½²µÃºÜdzÏÔ£¬µÚÒ»Õ½²ÁËsqlÊý¾Ý¿â½á¹¹£¬ÓÐʲôģÐÍ¡£½Ó׎²Ö÷¼ü£¬Íâ¼ü£¬È»ºóÊǽ¨±íÓï¾ä£¬²éѯÓï¾äµÈµÈ¡£
show databases ÏÔʾÊý¾Ý¿â¡£
use ** ʹÓÃÊý¾Ý¿â¡£
create table ** (**,**,**) ½¨±í¡£
se ......
ǰЩÈÕ×ÓÕÛÌÚµÄÔÚÏßÅÄÕÕ£¬ÓÉÓÚÖ»ÊǸüÐÂblob×ֶΣ¬Ã»ÓÐÔÚ±¾µØ±£´æÕÕÆ¬£¬µ¼Ö¿ͻ§ÅÄÄÔÃÅÏëÒªµÄʱºò²»ÄÜÂíÉÏÄóöÀ´¡£Ã»ËµµÄËÈù˿ÍÊÇÉϵÛÄØ£¬×ö°É¡£Ê¹ÓÃÏ̳߳ش´½¨Èý¸öÏß³ÌÈÃ×Ô¶¨Ò»¸öÏß³ÌÄ¿±ê¹²Ïí£¨Ò²¾ÍÊǰѱíÀïµÄ¼Ç¼·Ö³Én×éͬʱִÐе¼³ö£©¡£³ÌÐòºÜ¼òµ¥£¬Ò»¹²ËĸöÀàºÍÒ»¸öojdbc14.jar°ü¡£ÓÉÓÚsqlÓï¾äд´íÁËÔì³É¶à¸öÏ̶߳ÔÒ»¸ ......