{"id":2591,"date":"2020-03-21T18:54:10","date_gmt":"2020-03-21T18:54:10","guid":{"rendered":"https:\/\/itteacheritfreelance.hk\/wordpress\/?p=2591"},"modified":"2020-03-21T18:56:05","modified_gmt":"2020-03-21T18:56:05","slug":"java-array","status":"publish","type":"post","link":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/2020\/03\/21\/java-array\/","title":{"rendered":"\u9663\u5217Array"},"content":{"rendered":"\n
\"\u70ba\u5927\u5bb6\u914d\u5c0d\u96fb\u8166\u88dc\u7fd2,\u96fb\u8166\u73ed,<\/figure>\n\n\n\n

\u7576\u6211\u5011\u5728\u4f7f\u7528 Array \u6642\uff0c
\u6709\u6642\u6703\u6709\u9700\u6c42\u662f\u5c07 Array \u4e2d\u7684\u7269\u4ef6\u5167\u5bb9\u5217\u5370\u51fa\u4f86\uff0c
\u9019\u6642\u6211\u5011\u5c31\u9700\u8981\u5c07 Array \u8f49\u63db\u70ba\u5b57\u4e32\uff0c
\u96d6\u7136\u6211\u5011\u53ef\u4ee5\u7528 for \u6216 iterator \u81ea\u5df1\u62fc\u51fa\u5b57\u4e32\uff0c\u4f46\u5176\u5be6\u9084\u6709\u66f4\u5feb\u7684\u65b9\u6cd5\uff01<\/h3>\n\n\n\n

\u9664\u4e86\u628a\u9663\u5217\u8f49\u63db\u70ba\u5b57\u4e32\u5916\uff0c\u5f9e\u53e6\u4e00\u65b9\u9762\u4f86\u770b\uff0c
\u6211\u5011\u4e5f\u6703\u6709\u5c07 Array String \u91cd\u65b0\u8f49\u63db\u6210 Array \u7684\u9700\u6c42\u3002
\u4ee5\u4e0b\u7684\u7a0b\u5f0f\u78bc\u4ee5\u7c21\u55ae\u7684 int array \u70ba\u4f8b\uff0c<\/p>\n\n\n\n

\u8aaa\u660e\u7528array \u7684\u65b9\u6cd5:<\/p>\n\n\n\n

For primitive types:<\/p>\n\n\n\n

int[] myIntArray = new int[3];\nint[] myIntArray = {1,2,3};\nint[] myIntArray = new int[]{1,2,3};<\/code><\/pre>\n\n\n\n
For class<\/a>es, for example String<\/code>, it’s the same:<\/p>\n\n\n\n
String[] myStringArray = new String[3];\nString[] myStringArray = {\"a\",\"b\",\"c\"};\nString[] myStringArray = new String[]{\"a\",\"b\",\"c\"};\n\n<\/code><\/pre>\n\n\n\n
Syntax for default values:<\/p>\n\n\n\n
int[] num = new int[5];<\/code><\/pre>\n\n\n\n
Or (less preferred)<\/p>\n\n\n\n
int num[] = new int[5];<\/code><\/pre>\n\n\n\n
Syntax with values given (variable\/field initialization):<\/p>\n\n\n\n
int[] num = {1,2,3,4,5};<\/code><\/pre>\n\n\n\n
Or (less preferred)<\/p>\n\n\n\n
int num[] = {1, 2, 3, 4, 5};<\/code><\/pre>\n\n\n\n
Note: For convenience int[] num is preferable because it clearly tells that you are talking here about array. Otherwise no difference. Not at all.<\/p>\n\n\n\n
Multidimensional array<\/h2>\n\n\n\n
Declaration<\/h3>\n\n\n\n
int[][] num = new int[5][2];<\/code><\/pre>\n\n\n\n
Or<\/p>\n\n\n\n
int num[][] = new int[5][2];<\/code><\/pre>\n\n\n\n
Or<\/p>\n\n\n\n
int[] num[] = new int[5][2];<\/code><\/pre>\n\n\n\n
Initialization<\/h3>\n\n\n\n
 num[0][0]=1;\n num[0][1]=2;\n num[1][0]=1;\n num[1][1]=2;\n num[2][0]=1;\n num[2][1]=2;\n num[3][0]=1;\n num[3][1]=2;\n num[4][0]=1;\n num[4][1]=2;<\/code><\/pre>\n\n\n\n
Or<\/p>\n\n\n\n
 int[][] num={ {1,2}, {1,2}, {1,2}, {1,2}, {1,2} };<\/code><\/pre>\n\n\n\n
\"IT<\/figure>\n\n\n\n
\"IT\u96fb\u8166\u88dc\u7fd2
\u7acb\u523b\u8a3b\u518a\u53ca\u5831\u540d\u96fb\u8166\u88dc\u7fd2\u8ab2\u7a0b\u5427!<\/figcaption><\/figure>\n\n\n\n
\u8fd4\u56de\u4e3b\u9801(IT Teacher IT Freelance)<\/a><\/p>\n\n\n\n
facebook \u67e5\u8a62:
24 hours enquiry facebook channel :
https:\/\/www.facebook.com\/itteacheritfreelance\/?ref=aymt_homepage_panel<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
\u7576\u6211\u5011\u5728\u4f7f\u7528 Array \u6642\uff0c\u6709\u6642\u6703\u6709\u9700\u6c42\u662f\u5c07 A […]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":2580,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"slim_seo":{"title":"\u9663\u5217Array - ITTeacherITFreelance.hk","description":"\u7576\u6211\u5011\u5728\u4f7f\u7528 Array \u6642\uff0c \u6709\u6642\u6703\u6709\u9700\u6c42\u662f\u5c07 Array \u4e2d\u7684\u7269\u4ef6\u5167\u5bb9\u5217\u5370\u51fa\u4f86\uff0c \u9019\u6642\u6211\u5011\u5c31\u9700\u8981\u5c07 Array \u8f49\u63db\u70ba\u5b57\u4e32\uff0c \u96d6\u7136\u6211\u5011\u53ef\u4ee5\u7528 for \u6216 iterator \u81ea\u5df1\u62fc\u51fa\u5b57\u4e32\uff0c\u4f46\u5176\u5be6\u9084\u6709\u66f4\u5feb\u7684\u65b9\u6cd5\uff01 \u9664\u4e86\u628a\u9663\u5217\u8f49\u63db\u70ba\u5b57\u4e32\u5916\uff0c\u5f9e\u53e6\u4e00\u65b9\u9762\u4f86\u770b\uff0c \u6211\u5011\u4e5f\u6703\u6709\u5c07 Array String \u91cd\u65b0\u8f49\u63db\u6210 Array"},"footnotes":""},"categories":[1307],"tags":[],"_links":{"self":[{"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/2591"}],"collection":[{"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/comments?post=2591"}],"version-history":[{"count":1,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/2591\/revisions"}],"predecessor-version":[{"id":2592,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/2591\/revisions\/2592"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/media\/2580"}],"wp:attachment":[{"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/media?parent=2591"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/categories?post=2591"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/tags?post=2591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}