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2007-12-27 08:02:26
1. Èç¹û×ÓÀàÖеÄÒ»¸ö±äÁ¿ºÍ¸¸ÀàÖеÄÒ»¸ö±äÁ¿ÖØÃû, ÄÇô×ÓÀàÖеĸñäÁ¿½«»áÆÁ±Îµô¸¸ÀàÖеÄͬÃû±äÁ¿. Èç¹ûÒª·ÃÎʸ¸ÀàÖеıäÁ¿ÐèÒª°Ñ×ÓÀàcastµ½¸¸Àà.
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2007-12-24 12:49:22
1. ´´ÔìÊý×é(Creating an array)
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int carrot []; //²»ÒªÔÚ[ ]ÖмÓÊý×Ö
carrot = new int [256];
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int carrot [] = new int [256];
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carrot[5] = 42;
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2007-12-24 06:45:04
Àà java.lang.Object java.lang.Object
public class Object
Object ÀàÊÇÀà²ã´ÎµÄ¸ùÀà¡£ ÿ¸öÀà¶¼°Ñ Object ×÷Ϊһ¸ö¸¸Àà¡£ °üº¬Êý×éÔÚÄÚµÄÈ«²¿¶ÔÏó¾ùʵÏÖÕâ¸öÀàµÄ·½·¨¡£
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JavaµÄforward reference
2007-12-24 06:24:04
Forward reference ÊÇÖ¸ÔÚij¸ö±äÁ¿±»ÉùÃ÷֮ǰʹÓÃÕâ¸ö±äÁ¿. Ò»°ãÇé¿öÏÂ, ¶¼ÊÇ¿ÉÒÔʹÓÃforward referenceµÄ. µ«ÊÇ µ±Ò»¸ö±äÁ¿±»ÓÃÓÚ¶ÔÁíÒ»¸ö±äÁ¿½øÐгõʼ»¯Ê±, ÔÚ´Ë֮ǰ, ±ØÐëÒª¶Ô¸Ã±äÁ¿½øÐÐÉùÃ÷, ·½¿ÉʹÓÃ.
±ÈÈçÒ»ÏÂÇé¿ö, ¾ÍÊDz»ºÏ·¨µÄforward reference:
class A
{
int i = j; //compile-time error: incorrect forward reference
int j = 10;
}
Ò»ÏÂÇé¿ö, ¾ÍÊǺϷ¨µÄforward reference:
class B
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