Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

¡¾×ª¡¿JavaÖÐtoString()·½·¨

1£®toString£¨£©·½·¨
ObjectÀà¾ßÓÐÒ»¸ötoString()·½·¨£¬Äã´´½¨µÄÿ¸öÀà¶¼»á¼Ì³Ð¸Ã·½·¨¡£Ëü·µ»Ø¶ÔÏóµÄÒ»¸öString±íʾ£¬²¢ÇÒ¶ÔÓÚµ÷ÊԷdz£ÓаïÖú¡£È»¶ø¶ÔÓÚĬÈϵÄtoString()·½·¨ÍùÍù²»ÄÜÂú×ãÐèÇó£¬ÐèÒª¸²¸ÇÕâ¸ö·½·¨¡£
toString£¨£©·½·¨½«¶ÔÏóת»»Îª×Ö·û´®¡£¿´ÒÔÏ´úÂ룺
package sample;
class Villain {
    private String name;
    protected void set(String nm) {
       name = nm;
    }
    public Villain(String name) {
       this.name = name;
    }
    public String toString() {
       return "I'm a Villain and my name is " + name;
    }
}
public class Orc extends Villain {
    private int orcNumber;
    public Orc(String name, int orcNumber) {
       super(name);
       this.orcNumber = orcNumber;
    }
    public void change(String name, int orcNumber) {
       set(name);
       this.orcNumber = orcNumber;
    }
    public String toString() {
       return "Orc" + orcNumber + ":" + super.toString();
    }
    public static void main(String[] args) {
       Orc orc = new Orc("Limburger", 12);
       System.out.println(orc);
       orc.change("Bob", 19);
       System.out.println(orc);
    }
}
½á¹û£º
sample.Orc@11b86e7
sample.Orc@11b86e7
Èç¹ûÈ¥µô×¢ÊÍ£¬¼´¼ÓÈë2¸ötoString£¨£©·½·¨ºó£¬µÃµ½
½á¹û£º
Orc12:I'm a Villain and my name is Limburger
Orc19:I'm a Villain and my name is Bob
2£®ÔÚÈÝÆ÷ÀàÖÐʹÓÃtoString()
±àдһ¸ö¹¤¾ßÀ࣬ÓÃÓÚÔÚ¿ØÖÆÌ¨Êä³öIterator¡£
import java.


Ïà¹ØÎĵµ£º

½âÎöJavaÖеÄFileÀà

File£¨ÎļþÀࣩ
        ¾¡¹Üjava.io¶¨ÒåµÄ´ó¶àÊýÀàÊÇʵÐÐÁ÷ʽ²Ù×÷µÄ£¬FileÀ಻ÊÇ¡£ËüÖ±½Ó´¦ÀíÎļþºÍÎļþϵͳ¡£Ò²¾ÍÊÇ˵£¬FileÀàûÓÐÖ¸¶¨ÐÅÏ¢ÔõÑù´ÓÎļþ¶ÁÈ¡»òÏòÎļþ´æ´¢£»ËüÃèÊöÁËÎļþ±¾ÉíµÄÊôÐÔ¡£File¶ÔÏóÓÃÀ´»ñÈ¡»ò´¦ÀíÓë´ÅÅÌÎļþÏà¹ØµÄÐÅÏ¢£¬ÀýÈçȨÏÞ£¬Ê±¼ä£¬ÈÕÆÚºÍĿ¼·¾¶¡£´ËÍâ ......

JavaÀàÐÞÊηûºÍ³ÉÔ±±äÁ¿¡¢º¯ÊýÐÞÊηûÓë·ÃÎÊȨÏÞ

1¡¢JavaÐÞÊηû Java           ·ÃÎÊȨÏÞ\
Àà³ÉÔ±±äÁ¿¡¢º¯ÊýÐÞÊηû ±¾Àà Î޼̳йØÏµ
ͬһ°ü Î޼̳йØÏµ
²»Í¬°ü ¼Ì³Ð¹ØÏµ£¨×ÓÀࣩ
ͬһ°ü ¼Ì ......

ÔÚJavaÓ¦ÓóÌÐòÖзÃÎÊUSBÉ豸

ÔÚ±¾ÎÄͨ¹ýÌṩʹJava Ó¦ÓóÌÐò¿ÉÒÔʹÓà USB É豸µÄ API ¶øÊ¹Õâ¸ö¹ý³Ì±äµÃ¸üÈÝÒ×.
Java ƽ̨һֱ¶¼ÒÔÆäÆ½Ì¨ÎÞ¹ØÐÔ×ÔºÀ¡£ËäÈ»ÕâÖÖÎÞ¹ØÐÔÓÐÐí¶àºÃ´¦£¬µ«ÊÇËüҲʹµÃ±àдÓëÓ²¼þ½»»¥µÄ Java Ó¦ÓóÌÐòµÄ¹ý³Ì±äµÃÏ൱¸´ÔÓ¡£ÔÚ±¾ÎÄÖУ¬Ñо¿¿ÆÑ§¼Ò½¯ÇåÒ°ÌÖÂÛÁËÁ½¸öÏîÄ¿£¬ËüÃÇͨ¹ýÌṩʹJava Ó¦ÓóÌÐò¿ÉÒÔʹÓà USB É豸µÄ API ¶øÊ¹Õâ ......

Java ¼¼Êõ£¬IBM ·ç¸ñ: À๲Ïí


Java™ 5.0 ƽ̨µÄ IBM ʵÏÖÖÐÐµĹ²ÏíÀàÌØÐÔÌṩÁËÒ»ÖÖÍêȫ͸Ã÷ºÍ¶¯Ì¬µÄ·½·¨£¬¿ÉÒÔ¹²ÏíÒѾ­×°ÔصÄËùÓÐÀ࣬¶ø²»»á¶Ô¹²ÏíÀàÊý¾ÝµÄ JVM Ê©¼ÓÏÞÖÆ¡£Õâ¸öÌØÐÔΪ¼õÉÙÐéÄâÄÚ´æÕ¼Óú͸ĽøÆô¶¯Ê±¼äÌṩÁËÒ»¸ö¼òµ¥ÇÒÁé»îµÄ½â¾ö·½°¸£¬´ó¶àÊýÓ¦ÓóÌÐò¶¼Äܹ»Òò´ËÊÜÒæ¡£±¾ÎÄÌÖÂÛÕâ¸öÌØÐÔÊÇÈçºÎ¹¤×÷µÄ¡¢ÈçºÎʹÓÃËüÒÔ¼°ºÎʱʹÓÃËü£ ......

¹ØÓÚ Java ¶ÔÏóÐòÁл¯Äú²»ÖªµÀµÄ 5 ¼þÊÂ

Java ÐòÁл¯¼ò½é
Java ¶ÔÏóÐòÁл¯ÊÇ JDK 1.1 ÖÐÒýÈëµÄÒ»×鿪´´ÐÔÌØÐÔÖ®Ò»£¬ÓÃÓÚ×÷ΪһÖÖ½« Java ¶ÔÏóµÄ״̬ת»»Îª×Ö½ÚÊý×飬ÒÔ±ã´æ´¢»ò´«ÊäµÄ»úÖÆ£¬ÒÔºó£¬ÈÔ¿ÉÒÔ½«×Ö½ÚÊý×éת»»»Ø Java ¶ÔÏóÔ­ÓеÄ״̬¡£
ʵ¼ÊÉÏ£¬ÐòÁл¯µÄ˼ÏëÊÇ “¶³½á” ¶ÔÏó״̬£¬´«Êä¶ÔÏó״̬£¨Ð´µ½´ÅÅÌ¡¢Í¨¹ýÍøÂç´«ÊäµÈµÈ£©£¬È»ºó “½ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ