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1  Java2³õ²½.................................................................................................................................1
1.1  JavaÌØµã.......................................................................................................................1
1.2  ¼òµ¥µÄJava³ÌÐò..........................................................................................................1
1.3  ¼òµ¥µÄJava Applet³ÌÐòºÍÖ÷Òª·½·¨..........................................................................2
1.3.1  ä¯ÀÀÆ÷Ö´ÐÐappletµÄÖ÷Òª¹ý³Ì.......................................................................3
1.3.2  appletÖ÷Òª·½·¨ÓÐ...........................................................................................3
2  ±êʶ·û¡¢¹Ø¼ü×ÖºÍÊý¾ÝÀàÐÍ¡¢ÔËËã·û¡¢±í´ïʽºÍÓï¾ä.......................................................4
2.1  ±êʾ·û¡¢¹Ø¼ü×Ö...........................................................................................................4
2.2  Êý¾ÝÀàÐÍ.......................................................................................................................5
2.3  ¾²Ì¬³£Á¿.......................................................................................................................6
2.4  Ë³Ðò½á¹¹.......................................................................................................................6
2.4.1  Scanner Àà.........................................................................................................7
2.4.2  const ..................................................................................................................8
2.4.3  Õû³ý/ÔËËã·û.....................................................................................................8
2.4.4  JOptionPane Àà.................................................................................................8
2.5  Ñ¡Ôñ½á¹¹.....................................................................................................................10
2.6  Ñ­»·½á¹¹.....................................................................................................................11
2.7  package ºÍimportÓï¾ä..............................................................................................12
3  ÀàºÍ¶ÔÏó.................................................................................................................................12
3.1  ÀàºÍ¶ÔÏóµÄ»ù±¾¸ÅÄî.................................................................................................12
3.2  ÀàµÄUMLͼ±íʾ.......................................................................................................12
3.3  ·â×°¡¢¼Ì³ÐºÍ·½·¨ÖØÔØ.............................................................................................13
3.4  ¹¹Ôì·½·¨.....................................................................................................................13
3.4.1  ¶ÔÏóµÄ´´½¨.....................................................................................................13
3.4.2  ÒýÓñäÁ¿.........................................................................................................14
3.4.3  ÉùÃ÷±äÁ¿ºÍ´´½¨¶ÔÏó.....................................................................................14
3.4.4  ·ÃÎʶÔÏóµÄʵÀý±äÁ¿ºÍʵÀý·½·¨.................................................................14
3.4.5  »ù±¾ÀàÐͱäÁ¿ºÍÒýÓÃÀàÐͱäÁ¿µÄÇø±ð.........................................................14
3.4.6  »ù±¾ÀàÐͱäÁ¿ºÍÒýÓÃÀàÐͱäÁ¿¸³ÖµµÄÇø±ð.................................................15
3.5  ÀàÐÞÊηû.....................................................................................................................15
3.6  ÀàµÄ½á¹¹.....................................................................................................................15
3.7  Àà³ÉÔ±·ÃÎÊÐÞÊηû.....................................................................................................16
3.8  ³ÉÔ±±äÁ¿.....................................................................................................................17
3.9  GetterºÍSetter·½·¨.................................................................................................17
3.10  ¶ÔÏóµÄ¸ÅÄîºÍÀàÐÍ.................................................................................................17
3.11  ¶ÔÏóµÄÄÚ´æÄ£ÐÍ.....................................................................................................18
3.12  ¶ÔÏó·½·¨ºÍÊôÐÔµÄʹÓÃ.........................................................................................19
3.13  ½«¶ÔÏ󴫵ݸø·½·¨.................................................................................................21
3.14  ¶ÔÏóÊý×é.................................................................................................................21
3.15  ÊµÀý±äÁ¿ºÍÀà±äÁ¿µÄÇø±ð.....................................................................................22
3.16  ¾²Ì¬·½·¨.................................................................................................................25
3.17  ÊµÀý·½·¨ºÍÀà·½·¨µÄÇø±ð.....................................................................................26  

3.18  ÀàµÄ¼Ì³Ð.................................................................................................................26
3.19  ¸¸ÀàºÍ×ÓÀà.............................................................................................................29
3.20  ¼Ì³ÐµÄ¸¸×ÓÀàÀàÐÍת»».........................................................................................29
3.21  ¼Ì³Ðʱ³ÉÔ±±äÁ¿µÄÒþ²ØºÍ·½·¨µÄÖØÐ´.................................................................30
3.22  ¸²¸ÇºÍÖØÔØ.............................................................................................................32
3.23  ObjectÀà.....................................................................................................................32
3.24  ¶à̬ÐÔ¡¢¶¯Ì¬°ó¶¨.................................................................................................33
3.25  Í¨Óñà³Ì.................................................................................................................33
3.26  ¶ÔÏóÀàÐÍת»».........................................................................................................34
3.27  Òþ²ØÊý¾Ý×ֶκ;²Ì¬·½·¨.....................................................................................35
3.28  protectedÐÞÊηû........................................................................................................35
3.29  finalÀàºÍfinal·½·¨....................................................................................................35
3.30  abstractÀàºÍabstract·½·¨........................................................................................35
3.31  ±äÁ¿µÄ×÷ÓÃÓò.........................................................................................................38
3.32  this...............................................................................................................................38
3.33  super µÄʹÓÃ..............................................................................................................39
3.34  ½Ó¿Úinterface .........................................................................................................41
3.34.1  ½Ó¿ÚµÄÁ½¸ö·½Ã溬Òå.....................................................................................41
3.34.2  ½Ó¿ÚºÍ³éÏóÀàµÄÇø±ð.....................................................................................41
3.34.3  ½Ó¿Ú»Øµ÷.........................................................................................................45
3.35  Date Àà........................................................................................................................48
4  Êý×éºÍ×Ö·û´®.........................................................................................................................52
4.1  Ò»Î¬Êý×é.....................................................................................................................52
4.1.1  ÉùÃ÷Êý×éÒýÓñäÁ¿.........................................................................................53
4.1.2  ´´½¨Êý×é.........................................................................................................53
4.1.3  Êý×é³õʼ»¯.....................................................................................................54
4.1.4  ·ÃÎÊÊý×é.........................................................................................................54
4.1.5  ÔöÇ¿µÄforÑ­»·..............................................................................................54
4.1.6  ¸´ÖÆÊý×é.........................................................................................................55
4.1.7  Êý×é×÷Ϊ²ÎÊý´«µÝ.........................................................................................55
4.2  ¶þάÊý×é.....................................................................................................................55
4.2.1  ¶þάÊý×éÉùÃ÷.................................................................................................55
4.2.2  ¶þάÊý×éµÄ³¤¶È.............................................................................................56
4.2.3  ²»¹æÔòÊý×é.....................................................................................................56
4.3  ×Ö·û´®Êý×é.................................................................................................................56
4.4  ×Ö·û´®.........................................................................................................................56
4.4.1  java.lang.String................................................................................................59
4.4.2  String¹¹Ô캯Êý..............................................................................................59
4.4.3  ×Ö·û´®µÄ´æ´¢Ìصã.........................................................................................59
4.4.4  ¹æ·¶×Ö·û´®.....................................................................................................60
4.4.5  ×Ö·û´®µÄ±È½Ï.................................................................................................60
4.4.6  Á¬½Ó×Ö·û´®.....................................................................................................60
4.4.7  ×Ö·û´®×ª»».....................................................................................................60
4.4.8  ²éÕÒ×Ö·û»ò×Ö·û´®.........................................................................................61
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