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Introduction to Java Programming: A Comprehensive Overview

This document provides an in-depth introduction to the Java programming language, its history, and its unique features. From its inception by Sun Microsystems in 1995, Java has become a powerful tool for creating cross-platform applications. The text covers essential Java concepts, including the Java Virtual Machine (JVM), syntax basics, programming structures (if statements, loops, etc.), and more. Targeted at beginners and intermediate learners, this resource aims to build a strong foundation in Java programming and encourage further exploration into software development.

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Introduction to Java Programming: A Comprehensive Overview

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    1. Java???????

    2. ?1? Java??? 1995? SunMicrosystems???? ????????????????? ???????????????????????????????????????? OS??????????????? ????????????

    3. 1-1 Java????? ??????????CPU???????? CPU???????????????(????) ??????????????????????????????

    6. Java???????????·?? ????????? (????????) ????????????? (?????) ?????????? (Java??????)

    7. 1-2 Java??????Java?????? ?Java????? ???????????????????? ??????????? ?Java?????? ???????1?????????????????

    9. 1-3 Java????? ???????? ?OS????????????? Java ?Java?????(JVM:Java Virtual Machine)??????????OS??????????????(JVM??OS??????????)

    11. 1-4 Java????? ????? (JVM?????????) ????????

    12. 1-5 ????Java??? ????????????????? ?????????? ???????????? ??????????? ??????????? ????????

    13. ?2? Java????? Java???????????????????? Java??????????????????? ???????(????)????(?????)??????

    14. 2-1 Java??? (1)????????(MyClass.java) /* MyClass ???????? */ public class MyClass{ static String message; public static void main(String(String[] args){ //?????????????? message = “Hello!”; System.out.println(messge); } }

    15. ????? ????????????? ???? ??????????????? ?????????????????? ?????? ????????????????????? ????? ????????????????? ?????????? ?????????

    16. (3)????? ???···???????????????? ????? ? int number ; ???number???? String message ??????message???? ???? ? number=10 ???number?10???? message=“Hello”: ???message?”Hello”???? ?????????????? ? int number =10; ???number????10???? char moji =‘a’; ?1?????????moji??? ‘a’????

    17. (3)????? ???···????????????????? ??????? ? final int week =7 ; ?7?????????week???

    18. (4)???????? ???(???) ???????????????????????????? ????????? 1???????$?_????????????? 2???????????????? ???????????? ?????????????? ??? Java????????????????????????????????

    19. 2-2 ???? ???????????????? ???????????????????

    20. (1)?????? Java??????????????? ????????????????????? (2)?????? ????????????????? ?????????????? ????????????????????????? ?????????? (3)???? String??????? java.lang????????????

    21. (4)???????????????? ?????????????????? ??????···????????????????? ??????????????? ??????···????????????????? ????????????????? ?????

    23. (5)?????????? ???????????????????????? ??????????????????? ???????? ???????<???????

    24. (6)???? ??????????????????????? ??????? ?????????????????????? ?????? (10?? 8?? 16?? long?) ?????????? (????? double?) ?????? (? ?) ?????? (1?? ?????????? ) ???????

    25. (7)??? ?????? ?????????????

    26. (7)??? ??????????? ??????????···+1??? ?????????····-1???

    27. (7)??? ??????????? ??????????···+1??? ?????????····-1??? *???????????? ??? b=5; a=b++; ? b?a???????b?+1???? ????(a=5 ,b=6)

    28. (7)??? ??????????? ??????????···+1??? ?????????····-1??? *???????????? ??? b=5; a=++b; ? b?+1?????b?a?????? ????(a=6 ,b=6)

    29. (7)??? ?????? ??????????????

    30. (7)??? ?????? ?????????true?false????

    31. (7)??? ??????? ??????????0?1???????????? ?????????????????????????? ?????????

    32. 2-3 ?? (1)????? ??···??????????????? ?????????????? Java???????????? ??????????????

    33. 2-3 ?? (1)?????

    34. 2-3 ?? (1)?????

    35. 2-3 ?? (1)?????

    36. 2-3 ?? (1)?????

    37. 2-3 ?? (1)?????

    38. 2-3 ?? (2)2???????

    39. 2-3 ?? (2)2???????

    40. 2-4 ???? ???? ???????????????? ???? ???? ??????

    41. 2-4 ???? (1)if? 2???????????????????

    42. 2-4 ???? (1)if?

    43. 2-4 ???? (1)if?(??????????) ????????????????????????????????if???????????

    44. 2-4 ???? (1)if?(??????????)

    45. 2-4 ???? (1)if?(?????) ???????????????????

    46. 2-4 ???? (1)if?(?????)

    47. 2-4 ???? (2)swich? 2????????????????1????????????????????(??????????)

    48. 2-4 ???? (2)swich?

    49. 2-4 ???? (3)for? ??????true???????????????????

    50. 2-4 ???? (3)for?

    51. 2-4 ???? (4)while? ??????true???????????????????????1???????????????

    52. 2-4 ???? (4)while?

    53. 2-4 ???? (4)do···while? ??????true?????????????????????????1????????

    54. 2-4 ???? (4)do···while?

    55. 2-4 ???? (5)continue? for?while?do···while?????????????????????????????????????(????????????)

    56. 2-4 ???? (5)continue?

    57. 2-4 ???? (5)continue?

    58. 2-4 ???? (6)break? for?swich?while?do···while???????????????????? (????????????)

    59. 2-4 ???? (6)break?

    60. 2-4 ???? (6)break?

    61. 2-4 ???? (7)return? ??????????????????????????????????

    62. ?3? ??? Java????????????????? ???????????????????????? ?????????????????????

    63. 3-1 ?????????? (1)?????????? ?????????????????????(?????)??????????(????)????????????????????????????????????????? ????????????????????????????????????????????????????????????

    64. 3-1 ?????????? (2)????? ???????????????????????????????????????3????????? ??????(??) ????????????? ?????(???) ?????????????? ???????? ?????????(???????)??????????

    65. (2)?????

    66. (2)?????

    67. 3-1 ?????????? ????????

    68. 3-1 ??????????

    69. 3-1 ?????????? ?????

    70. 3-1 ?????????? ???????????

    71. 3-1 ?????????? ????????????

    72. 3-2 ????????? ?????????????? ?????????????????

    73. 3-2 ?????????

    74. 3-3 ?????????? ????????????????????????? ?.(???)??????????????????????????????????

    75. 3-3 ?????????? (1)????????? ?????????????????????????????????????????? ??????????????????????????????? ????????????????????????????

    76. 3-3 ?????????? (2)??????????? ???????????? ???????????????????????????? ???????????????????????????? ?????????????????????? ?????????????????????????????????????????????

    77. 3-3 ?????????? (3)??????? ???????????????????????????????????

    78. 3-3 ?????????? (3)???????? ?????????????????????????????????????? ???????????return???????????????

    79. 3-4 ???????????? ?????????????????????????????????????????????????????????????(??????)

    80. 3-5 ??????? (1)?????????????????????????????????????????????????

    81. 3-5 ???????

    82. 3-5 ??????? (2)???????????? ??????????????????????????? ????????????????????????Java??????????????????????????

    83. 3-6 ??????? ??????????????????????????????????????????????????????????????? ??????????????????????????? ?????????????????????????(?????)????????????????????????????????????????????

    84. 3-6 ??????? (1)?????????? ?????????? ?????????? ?????????? (2)????????? ??????????????????????????????????????? (3)???????????????? ????????????????????????????????????

    85. 3-6 ???????

    86. ?4? ?????? Java?????????????????????(???????)????????????? ???????????????????????????????? ??????????????????????????????????????????????????

    87. 4-1 ???? (1)????????????? ?????????????????????????? ???????????????????????????????????????????????????? ???????????????????????????? ??????????????????????????????????????????????

    88. 4-1 ???? ??????

    89. 4-1 ???? (2)???????? Java???1?????????????????????

    90. 4-2 ???????????? ??????????????????????????·????????????????????????????????? ????????????????????

    91. 4-2 ???????????? (1)this ? super this???????????????? super???????????????????

    92. 4-3 ??? ??????????????????????????????????

    93. 4-3 ???

    94. 4-3 ???

    95. 4-3 ???

    96. 4-4 ?????????????? ??????????????????????????????????????????????.??????????????????.???????????????????? ?????????????????????????????????????????????????

    97. 4-4 ?????????????? (1)?????????????? ?????????????????????????????????????????????????????

    98. 4-4 ?????????????? ?????

    99. 4-4 ?????????????? (2)??????? ???????????????????????????????????????????????? ????????????????????????

    100. 4-4 ?????????????? ???????

    101. 4-5 ???????????? ?????? ???????????????????????????????????????????????????????????????

    102. 4-6 ??????? Java???????????????????? ?????????????????????????????????????????

    103. 4-6 ??????? (1)??????? ??????????????????????????? ???????? ??????????????? ???????????????abstract????? ??????????????????????????????????implements ???????????????

    104. ?5? Java????????? ?????????????????????????????????????????? ????????????????????? ?????????????????????????????????????????????????????????????????????

    105. 5-1 ????? (1)????????

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