{"id":31357,"date":"2024-02-07T15:03:51","date_gmt":"2022-12-04T19:10:11","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e5%af%b9%e6%af%94swift%e5%92%8cjava%ef%bc%9aswift%e4%b8%8ejava%e7%9a%84%e5%85%bc%e5%ae%b9%e6%80%a7%e5%af%b9%e7%85%a7%e8%a1%a8%e3%80%82\/"},"modified":"2025-08-12T23:37:45","modified_gmt":"2025-08-12T15:37:45","slug":"%e5%b0%9d%e8%af%95%e5%af%b9%e6%af%94swift%e5%92%8cjava%ef%bc%9aswift%e4%b8%8ejava%e7%9a%84%e5%85%bc%e5%ae%b9%e6%80%a7%e5%af%b9%e7%85%a7%e8%a1%a8%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e5%af%b9%e6%af%94swift%e5%92%8cjava%ef%bc%9aswift%e4%b8%8ejava%e7%9a%84%e5%85%bc%e5%ae%b9%e6%80%a7%e5%af%b9%e7%85%a7%e8%a1%a8%e3%80%82\/","title":{"rendered":"\u5c1d\u8bd5\u5bf9\u6bd4Swift\u548cJava\uff1aSwift\u4e0eJava\u7684\u517c\u5bb9\u6027\u5bf9\u7167\u8868"},"content":{"rendered":"

\u9996\u5148<\/p>\n

\u6211\u5e73\u5e38\u4f5c\u4e3a\u4e00\u4e2aiOS\u5de5\u7a0b\u5e08\uff0c\u4f7f\u7528Swift\u8fdb\u884c\u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u3002
\n\u7531\u4e8e\u670d\u52a1\u5668\u4e3b\u8981\u662f\u7528Java\u7f16\u5199\u7684\uff0c\u6240\u4ee5\u6211\u6253\u7b97\u5b66\u4e60\u4e00\u4e0b\uff0c\u5728\u6b64\u57fa\u7840\u4e0a\u505a\u4e00\u4e2aSwift\u548cJava\u7684\u5bf9\u7167\u8868\u3002
\n\u6211\u60f3\u4ece\u57fa\u7840\u5f00\u59cb\u9010\u6e10\u66f4\u65b0\u3002
\n\u4f46\u662f\u7531\u4e8e\u6211\u5bf9Swift\u7684\u7ecf\u9a8c\u8fd8\u4e0d\u591f\u4e30\u5bcc\uff0c\u6240\u4ee5\u4e0d\u4ec5\u4ec5\u662fJava\uff0c\u5982\u679c\u6709\u9519\u8bef\u6216\u8005\u66f4\u597d\u7684\u5199\u6cd5\uff0c\u6216\u8005\u8fd8\u6709\u5176\u4ed6\u5199\u6cd5\uff0c\u6211\u5e0c\u671b\u80fd\u591f\u5728\u8bc4\u8bba\u4e2d\u5f97\u5230\u6307\u5bfc\u548c\u5efa\u8bae\u3002<\/p>\n

\u53d8\u91cf<\/p>\n

\u53d8\u91cf<\/p>\n
\/\/ \u5ba3\u8a00<\/span>\r\nvar<\/span> num<\/span>:<\/span> Int<\/span>\r\n\/\/ \u4ee3\u5165<\/span>\r\nnum<\/span> =<\/span> 0<\/span>\r\n\/\/ \u521d\u671f\u5316 (var \u5909\u6570\u540d = \u5024)<\/span>\r\nvar<\/span> num<\/span> =<\/span> 0<\/span>\r\n\r\nvar<\/span> str<\/span> =<\/span> \"\u3082\u3057\u3082\u3057\"<\/span>\r\nvar<\/span> bool<\/span> =<\/span> true<\/span>\r\n<\/code><\/pre>\n
\/\/ \u5ba3\u8a00<\/span>\r\nint<\/span> num<\/span>;<\/span>\r\n\/\/ \u4ee3\u5165<\/span>\r\nnum<\/span> =<\/span> 0<\/span>;<\/span>\r\n\/\/ \u521d\u671f\u5316 (\u30c7\u30fc\u30bf\u578b\u540d \u5909\u6570\u540d \u5024;)<\/span>\r\nint<\/span> num<\/span> =<\/span> 0<\/span>;<\/span>\r\n\r\nString<\/span> str<\/span> =<\/span> \"\u3082\u3057\u3082\u3057\"<\/span>;<\/span>\r\nboolean<\/span> bool<\/span> =<\/span> true<\/span>\r\n<\/code><\/pre>\n
\u5728Java\u4e2d\uff0c\u5206\u53f7\u662f\u5fc5\u987b\u8ddf\u4e0a\u7684\u3002\u5f88\u5bb9\u6613\u5fd8\u8bb0\u3002\u5b57\u7b26\u4e32\u662f\u4ee5\u5927\u5199\u5b57\u6bcd\u5f00\u5934\u7684\uff0c\u539f\u56e0\u5c06\u5728\u540e\u9762\u89e3\u91ca\u3002<\/p>\n
\u5b9a\u6570  sh\u00f9) – \u8fd9\u662f\u4e00\u4e2a\u9884\u5148\u8bbe\u5b9a\u7684\u6570\u503c\u3002<\/p>\n
\/\/ let \u5909\u6570\u540d \u5024<\/span>\r\nlet<\/span> num<\/span> =<\/span> 0<\/span>\r\nlet<\/span> num<\/span>:<\/span> Int<\/span> =<\/span> 0<\/span>\r\n\r\nlet<\/span> greetingStr<\/span> =<\/span> \"\u3082\u3057\u3082\u3057\"<\/span>\r\n<\/code><\/pre>\n
\/\/ final \u30c7\u30fc\u30bf\u578b\u540d \u5909\u6570\u540d \u5024;<\/span>\r\nfinal<\/span> int<\/span> NUM<\/span> =<\/span> 0<\/span>;<\/span>\r\n\r\nfinal<\/span> String<\/span> GREETING_STR<\/span> =<\/span> \"\u3082\u3057\u3082\u3057\"<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u30fb\u5728\u5f00\u5934\u6dfb\u52a0\u5173\u952e\u8bcd”final”\u3002
\n\u30fb\u5e38\u6570\u540d\u79f0\u5168\u90e8\u91c7\u7528\u5927\u5199\u4e0b\u5212\u7ebf\u683c\u5f0f\u547d\u540d\u3002<\/p>\n
\u6570\u5b57<\/p>\n
\/\/ \u6574\u6570 <\/span>\r\nvar<\/span> int<\/span>:<\/span> Int<\/span> =<\/span> 0<\/span>  \/\/ \u5b9f\u884c\u74b0\u5883\u306b\u3088\u3063\u306632bit or 64bit<\/span>\r\n\r\n\/\/ \u6d6e\u52d5\u5c0f\u6570\u70b9\u578b<\/span>\r\nvar<\/span> float<\/span>:<\/span> Float<\/span> =<\/span> 0.1<\/span>  \/\/ 10\u306e38\u4e57\u306e\u6b63\u8ca0 \u6700\u5c0f\u30676\u6841\u306e\u7cbe\u5ea6<\/span>\r\nvar<\/span> double<\/span>:<\/span> Double<\/span> =<\/span> 0.1<\/span> \/\/ 10\u306e308\u4e57\u306e\u6b63\u8ca0 \u6700\u5c0f\u306715\u6841\u306e\u7cbe\u5ea6<\/span>\r\n<\/code><\/pre>\n
\/\/ \u6574\u6570<\/span>\r\nbyte<\/span> by<\/span> =<\/span> 0<\/span>;<\/span> \/\/ 8\u30d3\u30c3\u30c8<\/span>\r\nshort<\/span> sh<\/span> =<\/span> 0<\/span>;<\/span> \/\/ 16\u30d3\u30c3\u30c8<\/span>\r\nint<\/span> in<\/span> =<\/span> 0<\/span>;<\/span> \/\/ 32\u30d3\u30c3\u30c8<\/span>\r\nlong<\/span> lo<\/span> =<\/span> 0<\/span>;<\/span> \/\/ 64\u30d3\u30c3\u30c8<\/span>\r\n\r\n\/\/ \u6d6e\u52d5\u5c0f\u6570\u578b<\/span>\r\nfloat<\/span> fl<\/span> =<\/span> 0.1<\/span>;<\/span> \/\/ 32\u30d3\u30c3\u30c8<\/span>\r\ndouble<\/span> dou<\/span> =<\/span> 0.1<\/span>;<\/span> \/\/ 64\u30d3\u30c3\u30c8<\/span>\r\n\r\n\/\/ \u672b\u5c3e\u306bF,L\u3092\u3064\u3051\u308b\u3053\u3068\u3067Float,Long\u578b\u306b\u306a\u308b<\/span>\r\nnum<\/span> =<\/span> 100<\/span>F<\/span>;<\/span> \/\/ float\u578b<\/span>\r\nnum<\/span> =<\/span> 200L<\/span>;<\/span> \/\/ long\u578b<\/span>\r\n<\/code><\/pre>\n
\u6211\u4e4b\u524d\u5e76\u4e0d\u77e5\u9053Swift\u7684Int\u7c7b\u578b\u7684\u8303\u56f4\u4f1a\u6839\u636e\u6267\u884c\u73af\u5883\u800c\u53d8\u5316\u3002<\/p>\n
\u6587\u5b57\u8ad6\u7406\uff1a\u4ee5\u6587\u5b57\u70ba\u57fa\u790e\u7684\u908f\u8f2f\u601d\u7dad<\/p>\n
\/\/ \u6587\u5b57\u5217<\/span>\r\nvar<\/span> str<\/span>:<\/span> String<\/span> =<\/span> \"Hello\"<\/span>\r\n\r\n\/\/ Character\u578b<\/span>\r\nvar<\/span> character<\/span>:<\/span> Character<\/span> =<\/span> \"a\"<\/span>  \r\n\r\n\/\/ \u8ad6\u7406\u578b<\/span>\r\nvar<\/span> bool<\/span>:<\/span> Bool<\/span> =<\/span> true<\/span>\r\n<\/code><\/pre>\n
\/\/ \u6587\u5b57\u5217<\/span>\r\nString<\/span> str<\/span> =<\/span> \"Hello\"<\/span>;<\/span>\r\n\r\n\/\/ Character\u578b<\/span>\r\nchar<\/span> ch<\/span> =<\/span> '\u3042'<\/span>;<\/span>\r\n\r\n\/\/ \u8ad6\u7406\u578b<\/span>\r\nboolean<\/span> bool<\/span> =<\/span> true<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u5728Java\u4e2d\uff0c\u5b57\u7b26\u7c7b\u578b\u7684\u6570\u636e\u7528\u5355\u5f15\u53f7\u62ec\u8d77\u6765\u3002<\/p>\n
\u6392\u5217<\/p>\n
var<\/span> stringArray<\/span>:<\/span> [<\/span>String<\/span>]<\/span> =<\/span> [<\/span>\"\u30b5\u30a6\u30ca\"<\/span>,<\/span> \"\u6c34\u98a8\u5442\"<\/span>,<\/span> \"\u30ed\u30a6\u30ea\u30e5\u30fc\"<\/span>]<\/span>\r\nvar<\/span> boolArray<\/span>:<\/span> [<\/span>Bool<\/span>]<\/span> =<\/span> []<\/span>\r\n\r\n\u914d\u5217\u540d<\/span>.<\/span>count\u3067\u8981\u7d20\u6570\u3092\u53d6\u5f97<\/span>\r\n<\/code><\/pre>\n
\/\/ \u30c7\u30fc\u30bf\u578b[] \u914d\u5217\u540d = new \u30c7\u30fc\u30bf\u578b[\u8981\u7d20\u6570];<\/span>\r\nString<\/span>[]<\/span> stringArray<\/span> =<\/span> new<\/span> String<\/span>[<\/span>\"\u30b5\u30a6\u30ca\"<\/span>,<\/span> \"\u6c34\u98a8\u5442\"<\/span>,<\/span> \"\u30ed\u30a6\u30ea\u30e5\u30fc\"<\/span>];<\/span>\r\nboolean<\/span>[]<\/span> boolArray<\/span> =<\/span> new<\/span> boolean<\/span>[<\/span>3<\/span>];<\/span> \/\/ 3\u3064\u306e\u8981\u7d20\u304c\u5165\u308b\u914d\u5217<\/span>\r\nboolArray<\/span>[<\/span>0<\/span>]<\/span> =<\/span> true<\/span>;<\/span>\r\nint<\/span>[]<\/span> nums<\/span>;<\/span> \/\/ \u914d\u5217\u306e\u5ba3\u8a00<\/span>\r\nint<\/span>[]<\/span> nums2<\/span> =<\/span> {<\/span>0<\/span>,<\/span> 1<\/span>,<\/span> 2<\/span>}<\/span>\r\n\r\n\u914d\u5217\u540d<\/span>.<\/span>length<\/span> \u3067\u8981\u7d20\u6570\u3092\u53d6\u5f97<\/span>\r\n<\/code><\/pre>\n
\u58f0\u660e\u8981\u7d20\u6570\u91cf\u662f\u4e00\u79cd\u5947\u5999\u7684\u611f\u89c9\u3002<\/p>\n
\u5b57\u5178<\/p>\n
\/\/ \u8f9e\u66f8<\/span>\r\nvar<\/span> intDictionary<\/span>:<\/span> [<\/span>String<\/span>:<\/span> Int<\/span>]<\/span> =<\/span> [<\/span>\"\u30b5\u30a6\u30ca\"<\/span>:<\/span> 37<\/span>,<\/span> \"\u6c34\u98a8\u5442\"<\/span>:<\/span> 32<\/span>,<\/span> \"\u30ed\u30a6\u30ea\u30e5\u30fc\"<\/span>:<\/span> 6<\/span>]<\/span>\r\n<\/code><\/pre>\n
\/\/ \u8f9e\u66f8 <\/span>\r\n \/\/Map, HashMap, Hashtable, LinkedHashMap, TreeMap...<\/span>\r\nMap<\/span><<\/span>String<\/span>,<\/span> int<\/span>><\/span> map1<\/span> =<\/span> new<\/span> HashMap<\/span><<\/span>String<\/span>,<\/span> int<\/span>>()<\/span> {<\/span>\r\n        put<\/span>(<\/span>\"\u30b5\u30a6\u30ca\"<\/span>,<\/span> 37<\/span>);<\/span>\r\n        put<\/span>(<\/span>\"\u6c34\u98a8\u5442\"<\/span>,<\/span> 32<\/span>);<\/span>\r\n        put<\/span>(<\/span>\"\u30ed\u30a6\u30ea\u30e5\u30fc\"<\/span>,<\/span> 6<\/span>);<\/span>\r\n};<\/span>\r\n<\/code><\/pre>\n
\u770b\u8d77\u6765HashMap\u652f\u6301\u5b57\u5178\u7c7b\u578b\uff0c\u4f46\u662f\u6211\u60f3\u8981\u66f4\u6df1\u5165\u5730\u7406\u89e3\u5e76\u8be6\u7ec6\u8bb0\u5f55\u76f8\u5173\u5185\u5bb9\u3002<\/p>\n
\u5143\u7ec4<\/p>\n
let<\/span> position<\/span>:<\/span> (<\/span>Int<\/span>,<\/span> Int<\/span>,<\/span> Int<\/span>)<\/span> =<\/span> (<\/span>35<\/span>,<\/span> 2<\/span>,<\/span> 90<\/span>)<\/span>\r\nlet<\/span> x<\/span> =<\/span> position<\/span>.<\/span>0<\/span>\r\nlet<\/span> y<\/span> =<\/span> position<\/span>.<\/span>1<\/span>\r\nlet<\/span> z<\/span> =<\/span> position<\/span>.<\/span>2<\/span>\r\n<\/code><\/pre>\n
\/\/ Java\u306b\u30bf\u30d7\u30eb\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u30af\u30e9\u30b9\u3084\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3063\u3066\u30bf\u30d7\u30eb\u3068\u3057\u3066\u4f7f\u3046\u65b9\u6cd5\u304c\u3042\u308b\u3088\u3046\u3067\u3059\u3002<\/span>\r\n<\/code><\/pre>\n
\u53ef\u9009\u7684\u4e3a nil \u6216 null\u3002<\/p>\n
var<\/span> str<\/span>:<\/span> String<\/span>?<\/span>\r\nvar<\/span> int<\/span>:<\/span> Int<\/span>?<\/span> =<\/span> 0<\/span>\r\nvar<\/span> double<\/span>:<\/span> Double<\/span>?<\/span> =<\/span> nil<\/span>\r\nvar<\/span> bool<\/span>:<\/span> Bool<\/span>?<\/span>\r\n<\/code><\/pre>\n
String<\/span> str<\/span>;<\/span>\r\nInteger<\/span> int<\/span> =<\/span> 0<\/span>;<\/span>\r\nDouble<\/span> double<\/span> =<\/span> null<\/span>;<\/span>\r\nBoolean<\/span> boolean<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u4e0b\u9762\u662f\u539f\u59cb\u6570\u636e\u7c7b\u578b\u3002\u8fd9\u4e9b\u53d8\u91cf\u7528\u4e8e\u5b58\u50a8\u5177\u4f53\u7684\u503c\uff0c\u5982\u6574\u6570\u503c\u548c\u5b9e\u6570\u503c\u3002\u5b83\u4eec\u4e0d\u5305\u542bnull\u3002<\/p>\n
byte\u3001short\u3001int\u3001long\u3001float\u3001double\u3001char\u3001boolean<\/p>\n
\u5728Java\u4e2d\uff0c\u539f\u59cb\u6570\u636e\u7c7b\u578b\u90fd\u6709\u5bf9\u5e94\u7684\u7c7b\u7248\u672c\uff08\u5f15\u7528\u7c7b\u578b\uff09\uff0c\u79f0\u4e3a”\u5305\u88c5\u7c7b”\u3002
\n\u4f8b\u5982\uff0cInteger\u548cDouble\u7b49\u90fd\u4ee5\u5927\u5199\u5b57\u6bcd\u8868\u793a\u3002\u800c\u5bf9\u4e8eString\u6765\u8bf4\uff0c\u5e76\u4e0d\u5b58\u5728\u539f\u59cb\u6570\u636e\u7c7b\u578b\uff0c\u53ea\u6709\u7c7b\uff0c\u56e0\u6b64\u9700\u8981\u4ee5\u5927\u5199\u5b57\u6bcd\u5f62\u5f0f\u8868\u793a\u3002<\/p>\n
\u53c2\u7167\u884c\u4fdd\u5b58\u5728\u5185\u5b58\u4e2d\u7684\u5730\u5740\u4f5c\u4e3a\u53c2\u7167\u503c\u5b58\u50a8\u5728\u53d8\u91cf\u4e2d\u3002
\n\u7c7b\u522b\u8d85\u8fc73000\u79cd\u4ee5\u4e0a\u3002<\/p>\n
\u540c\u6837\uff0c\u9700\u8981\u5c0f\u5fc3\u5904\u7406\u4e24\u4e2a\u5305\u88c5\u7c7b\u4e4b\u95f4\u7684\u6bd4\u8f83\u3002\u57fa\u672c\u4e0a\uff0c\u6700\u597d\u4f7f\u7528equals\u65b9\u6cd5\u3002<\/p>\n
\n
\n\n\n\u6bd4\u8f03\u5185\u5bb9<\/th>\n\u7d50\u679c<\/th>\n<\/tr>\n<\/thead>\n\n\n\u30e9\u30c3\u30d1\u30fc\u30af\u30e9\u30b9\u3068\u30e9\u30c3\u30d1\u30fc\u30af\u30e9\u30b9\u3092==\u3067\u540c\u5024\u6bd4\u8f03<\/td>\nfalse<\/td>\n<\/tr>\n\n\u30e9\u30c3\u30d1\u30fc\u30af\u30e9\u30b9\u3068\u30e9\u30c3\u30d1\u30fc\u30af\u30e9\u30b9\u3092equals\u30e1\u30bd\u30c3\u30c9\u3067\u540c\u5024\u6bd4\u8f03<\/td>\ntrue<\/td>\n<\/tr>\n\n\u30e9\u30c3\u30d1\u30fc\u30af\u30e9\u30b9\u3068\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u3092==\u3067\u540c\u5024\u6bd4\u8f03<\/td>\ntrue<\/td>\n<\/tr>\n\n\u30e9\u30c3\u30d1\u30fc\u30af\u30e9\u30b9\u3068\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u3092equals\u30e1\u30bd\u30c3\u30c9\u3067\u540c\u5024\u6bd4\u8f03<\/td>\ntrue<\/td>\n<\/tr>\n<\/tbody>\n
\u6295
\n\u3010Option 1\u3011\u6f14\u5458<\/p>\n
var<\/span> int<\/span> =<\/span> 3<\/span>\r\nvar<\/span> double<\/span> =<\/span> 4.5<\/span>\r\nvar<\/span> result<\/span> =<\/span> Double<\/span>(<\/span>int<\/span>)<\/span> +<\/span> double<\/span>\r\n<\/code><\/pre>\n
int<\/span> numInt<\/span> =<\/span> 3<\/span>;<\/span>\r\ndouble<\/span> numDouble<\/span> =<\/span> 4.5<\/span>\r\ndouble<\/span> result<\/span> =<\/span> (<\/span>double<\/span>)<\/span>numInt<\/span> +<\/span> numDouble<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u5728Java\u4e2d\uff0c\u53ef\u4ee5\u5c06int\u7c7b\u578b\u7684\u503c\u8f6c\u6362\u4e3along\u7c7b\u578b\u7b49\u8fdb\u884c\u6269\u5927\u8f6c\u6362\uff0c\u4f46\u662f\u4e0d\u80fd\u5c06long\u7c7b\u578b\u8f6c\u6362\u4e3aint\u7c7b\u578b\u8fdb\u884c\u7f29\u5c0f\u8f6c\u6362\u3002<\/p>\n
\u7b97\u5b50<\/p>\n
\u57fa\u672c\u7684\u8fd0\u7b97\u7b26\uff08>\u3001<\u3001==\u3001!= \u7b49\uff09\u5728Swift\u548cJava\u4e2d\u662f\u4e00\u6837\u7684\u3002\n\n
\u867d\u7136\u8bdd\u9898\u7a0d\u6709\u6539\u53d8\uff0c\u4f46\u662f\u5728Swift\u4e2d\uff0c\u4e0d\u540c\u7c7b\u578b\u4e4b\u95f4\u7684\u8ba1\u7b97\u4f1a\u5bfc\u81f4\u9519\u8bef\u3002
\n\u800c\u5728Java\u4e2d\uff0c\u53ea\u8981\u8ba1\u7b97\u7ed3\u679c\u4e0e\u88ab\u8d4b\u503c\u7684\u53d8\u91cf\u76f8\u7b26\uff0c\u5c31\u53ef\u4ee5\u8fdb\u884c\u8d4b\u503c\u64cd\u4f5c\u3002<\/p>\n
var<\/span> numInt<\/span> =<\/span> 3<\/span>\r\nvar<\/span> double<\/span>:<\/span> Double<\/span> =<\/span> 1.1<\/span>\r\nvar<\/span> double2<\/span>:<\/span> Double<\/span>\r\ndouble2<\/span> =<\/span> numInt<\/span> *<\/span> double<\/span> \/\/ \u30a8\u30e9\u30fc<\/span>\r\n<\/code><\/pre>\n
int<\/span> num<\/span> =<\/span> 3<\/span>;<\/span>\r\ndouble<\/span> numDouble<\/span> =<\/span> 1.1<\/span>;<\/span>\r\ndouble<\/span> numDouble2<\/span>;<\/span>\r\nnumDouble2<\/span> =<\/span> num<\/span> *<\/span> numDouble<\/span>;<\/span> \/\/ \u5b9f\u884c\u53ef\u80fd<\/span>\r\n<\/code><\/pre>\n
\u7a7a\u503c\u68c0\u67e5  zh\u00ed<\/p>\n
if<\/span> let<\/span> hoge<\/span> =<\/span> hoge<\/span> {<\/span>\r\nprint<\/span>(<\/span>hoge<\/span>)<\/span>\r\n}<\/span>\r\n\r\nif<\/span> hoge<\/span> !=<\/span> nil<\/span> {<\/span>\r\nprint<\/span>(<\/span>hoge<\/span>)<\/span>\r\n}<\/span>\r\n\r\nguard<\/span> let<\/span> hoge<\/span> =<\/span> hoge<\/span> else<\/span> {<\/span> \r\n  return<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
String<\/span> str<\/span> =<\/span> null<\/span>;<\/span>\r\nif<\/span> (<\/span>StringUtils<\/span>.<\/span>isEmpty<\/span>(<\/span>str<\/span>))<\/span> {<\/span>\r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"str == null\"<\/span>);<\/span>\r\n}<\/span>\r\n\r\n\/\/ str\u304cnull<\/span>\r\nif<\/span> (<\/span>str<\/span> ==<\/span> null<\/span>)<\/span> {<\/span>\r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"str == null\"<\/span>);<\/span>\r\n}<\/span>\r\n\/\/ str\u304cnull\u4ee5\u5916<\/span>\r\nif<\/span> (<\/span>str<\/span> !=<\/span> null<\/span>)<\/span> {<\/span>\r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"str != null\"<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u00b7 Java\u4e0d\u662fnil\u3002\u5b83\u662fnull\u3002<\/p>\n
\u8bed\u6cd5<\/p>\n
\u5982\u679c…<\/p>\n
if<\/span> dollar<\/span> ><\/span> 130<\/span> {<\/span> \r\nprint<\/span>(<\/span>\"\u5186\u5b89\"<\/span>)<\/span>\r\n}<\/span> else<\/span> if<\/span>  dollar<\/span> <<\/span> 90<\/span> {<\/span>\r\nprint<\/span>(<\/span>\"\u5186\u9ad8\"<\/span>)<\/span>\r\n}<\/span>\r\n\r\nif<\/span> age<\/span> >=<\/span> 18<\/span> {<\/span>\r\nprint<\/span>(<\/span>\"\u6210\u4eba\"<\/span>)<\/span>\r\n}<\/span> else<\/span> {<\/span>\r\nprint<\/span>(<\/span>\"\u672a\u6210\u5e74\"<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
if<\/span> (<\/span>dollar<\/span> ><\/span> 130<\/span>)<\/span> {<\/span>\r\nSystem<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u5186\u5b89\"<\/span>);<\/span>\r\n}<\/span> else<\/span> if<\/span> dollar<\/span> <<\/span> 90<\/span> {<\/span>\r\nSystem<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u5186\u9ad8\"<\/span>);<\/span>\r\n}<\/span>\r\n\r\nif<\/span> (<\/span>age<\/span> >=<\/span> 18<\/span>)<\/span> {<\/span>\r\nSystem<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u6210\u4eba\"<\/span>);<\/span>\r\n}<\/span> else<\/span> {<\/span>\r\nSystem<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u672a\u6210\u5e74\"<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8f6c\u6362<\/p>\n
switch<\/span> num<\/span> {<\/span>\r\n  case<\/span> 1<\/span>:<\/span> print<\/span>(<\/span>\"1\"<\/span>)<\/span>\r\n  case<\/span> 2<\/span>:<\/span> print<\/span>(<\/span>\"2\"<\/span>)<\/span>\r\n  case<\/span> 3<\/span>:<\/span> print<\/span>(<\/span>\"3\"<\/span>)<\/span>\r\n  default<\/span>:<\/span> print<\/span>(<\/span>\"default\"<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
switch<\/span> (<\/span>num<\/span>)<\/span> {<\/span>\r\n  case<\/span> 1<\/span>:<\/span> {<\/span> System<\/span>.<\/span>out<\/span>.<\/span>print<\/span>(<\/span>\"1\"<\/span>);<\/span>\r\n  break<\/span>;<\/span>\r\n  }<\/span>\r\n  case<\/span> 2<\/span>:<\/span> {<\/span> System<\/span>.<\/span>out<\/span>.<\/span>print<\/span>(<\/span>\"2\"<\/span>);<\/span>\r\n  break<\/span>;<\/span>\r\n  }<\/span>\r\n  case<\/span> 3<\/span>:<\/span> {<\/span> System<\/span>.<\/span>out<\/span>.<\/span>print<\/span>(<\/span>\"3\"<\/span>);<\/span>\r\n  break<\/span>;<\/span>\r\n  }<\/span>\r\n  default<\/span>:<\/span> {<\/span> System<\/span>.<\/span>out<\/span>.<\/span>print<\/span>(<\/span>\"default\"<\/span>)<\/span> }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728\u8fd9\u4e2a\u573a\u666f\u4e2d\uff0c\u4f7f\u7528\u82b1\u62ec\u53f7{}\u5305\u56f4\u8282\uff0c\u5e76\u6dfb\u52a0break;\u8bed\u53e5\u3002<\/p>\n
\u5f53<\/p>\n
var<\/span> num<\/span> =<\/span> 0<\/span>\r\nwhile<\/span> num<\/span> <<\/span> 3<\/span> {<\/span>\r\n  num<\/span> +=<\/span> 1<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
int<\/span> num<\/span> =<\/span> 0<\/span>;<\/span>\r\nwhile<\/span> (<\/span>num<\/span> <<\/span> 3<\/span>)<\/span> {<\/span>\r\n num<\/span>++;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u636e\u8bf4Swift 3\u53ca\u4ee5\u540e\u7248\u672c\u5df2\u88ab\u5e9f\u5f03\u3002<\/p>\n
\u5bf9\u4e8e\u6587<\/p>\n
for<\/span> i<\/span> in<\/span> 0<\/span>..<<\/span>3<\/span> {<\/span>\r\n  print<\/span>(<\/span>i<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\/\/ for(\u5f0f1; \u6761\u4ef6\u5f0f; \u5f0f2)\u3000{ \u51e6\u7406 }<\/span>\r\n\/\/ for(\u30ab\u30a6\u30f3\u30bf\u5909\u6570\u306e\u6e96\u5099,\u30ab\u30a6\u30f3\u30bf\u5909\u6570\u306e\u6761\u4ef6\u5f0f,\u3000\u5b9f\u969b\u306b\u5b9f\u884c\u3059\u308b\u5f0f)<\/span>\r\n\r\nfor<\/span>(<\/span>int<\/span> i<\/span> =<\/span> 0<\/span>;<\/span> i<\/span> <<\/span> 3<\/span>;<\/span> i<\/span>++)<\/span> {<\/span>\r\nSystem<\/span>.<\/span>out<\/span>.<\/span>print<\/span>(<\/span>i<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u30fbJava\u7684for\u5faa\u73af\u770b\u8d77\u6765\u5f88\u590d\u6742\uff0c\u4f46\u5b83\u5b9e\u9645\u4e0a\u548cSwift\u505a\u7684\u4e8b\u60c5\u662f\u4e00\u6837\u7684\u3002
\n\u30fb\u4ee5\u524d\uff0cSwift\u4f3c\u4e4e\u4e5f\u50cfJava\u4e00\u6837\u4f7f\u7528\u4e86\u7c7b\u4f3cC\u8bed\u8a00\u7684for\u5faa\u73af\uff0c\u4f46\u636e\u8bf4\u5df2\u7ecf\u5e9f\u5f03\u4e86\u3002<\/p>\n
\u73ed\u7ea7<\/p>\n
\u73ed\u7ea7  j\u00ed)<\/p>\n
class<\/span> Swift<\/span> {<\/span>\r\n\r\n}<\/span>\r\n<\/code><\/pre>\n
Class<\/span> Java<\/span> {<\/span>\r\n    \/\/ \u30e1\u30a4\u30f3\u30e1\u30bd\u30c3\u30c9<\/span>\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[]<\/span> args<\/span>)<\/span> {<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u30fb\u7c7b\u7684\u547d\u540d\u9075\u5faa\u4e0eSwift\u76f8\u4f3c\u7684\u5927\u5199\u5b57\u6bcd\u5f62\u5f0f\u3002
\n\u30fb\u4e3b\u65b9\u6cd5\u662f\u5728\u6267\u884c\u7a0b\u5e8f\u65f6\u9996\u5148\u8c03\u7528\u7684\u65b9\u6cd5\u3002\u5173\u4e8e\u4e3b\u65b9\u6cd5\uff0c\u5982\u679c\u641c\u7d22\u4e00\u4e0b\u53ef\u4ee5\u53d1\u73b0\u5b83\u6709\u4e00\u4e9b\u501f\u9274\u81eaC\u8bed\u8a00\u7684\u7279\u70b9\uff0c\u8fd9\u4e5f\u662f\u5f88\u6709\u8da3\u7684\u3002<\/p>\n
\u521d\u59cb\u5316\uff08Java \u6784\u9020\u65b9\u6cd5\uff09<\/p>\n
class<\/span> Human<\/span> {<\/span>\r\n    var<\/span> name<\/span>:<\/span>String<\/span>\r\n    var<\/span> age<\/span>:<\/span>Int<\/span>\r\n\r\n    init<\/span>(<\/span>name<\/span>:<\/span>String<\/span>,<\/span> age<\/span>:<\/span>Int<\/span>){<\/span>\r\n        self<\/span>.<\/span>name<\/span> =<\/span> name<\/span>\r\n        self<\/span>.<\/span>age<\/span> =<\/span> age<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\nlet<\/span> miyamoto<\/span> =<\/span> Human<\/span>(<\/span>name<\/span>:<\/span> \"\u5bae\u672c\u6b66\u8535\"<\/span>,<\/span> age<\/span>:<\/span> 29<\/span>)<\/span>\r\n<\/code><\/pre>\n
class<\/span> Human<\/span> {<\/span>\r\n    String<\/span> name<\/span>;<\/span>\r\n    int<\/span> age<\/span>;<\/span>\r\n \r\n    \/\/ \u5f15\u6570\u3092\u6301\u3064\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf<\/span>\r\n    public<\/span> Human<\/span>(<\/span>String<\/span> name<\/span>,<\/span> int<\/span> age<\/span>)<\/span> {<\/span>\r\n        this<\/span>.<\/span>name<\/span> =<\/span> name<\/span>;<\/span>\r\n        this<\/span>.<\/span>age<\/span> =<\/span> age<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n \r\n\/\/\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u751f\u6210<\/span>\r\nHuman<\/span> miyamoto<\/span> =<\/span> new<\/span> Human<\/span>(<\/span>\"\u5bae\u672c\u6b66\u8535\"<\/span>,<\/span> 29<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u7ed3\u6784\u4f53<\/p>\n
struct<\/span> Human<\/span> {<\/span>\r\n    var<\/span> name<\/span>:<\/span> String<\/span>\r\n    var<\/span> height<\/span>:<\/span> Int<\/span>\r\n}<\/span>\r\n\r\nlet<\/span> humanA<\/span> =<\/span> Human<\/span>(<\/span>name<\/span>:<\/span> \"\u30b5\u30a6\u30ca\u592a\u90ce\"<\/span>,<\/span> height<\/span>:<\/span> 180<\/span>)<\/span>\r\n<\/code><\/pre>\n
public<\/span> class<\/span> Human<\/span> {<\/span>\r\n    private<\/span> final<\/span> String<\/span> name<\/span>;<\/span>\r\n    private<\/span> final<\/span> int<\/span> height<\/span>;<\/span>\r\n\r\n    public<\/span> Human<\/span>(<\/span>String<\/span> name<\/span>,<\/span> int<\/span> height<\/span>)<\/span> {<\/span>\r\n        this<\/span>.<\/span>name<\/span> =<\/span> name<\/span>;<\/span>\r\n        this<\/span>.<\/span>height<\/span> =<\/span> height<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7531\u4e8eSwift\u4f1a\u81ea\u52a8\u751f\u6210\u521d\u59cb\u5316\u51fd\u6570\uff0c\u6240\u4ee5\u53ef\u4ee5\u4f7f\u7528\u57fa\u672c\u7684\u521d\u59cb\u5316\u51fd\u6570\u800c\u4e0d\u9700\u8981\u7f16\u5199\u5b83\u3002
\n\u5728Java\u4e2d\u6ca1\u6709struct\u7684\u6982\u5ff5\uff0c\u56e0\u6b64\u9700\u8981\u58f0\u660e\u4e3a\u4e0d\u53ef\u53d8\uff08\u65e0\u6cd5\u66f4\u6539\uff09\u7684\u7c7b\u3002<\/p>\n
\u534f\u8bae<\/p>\n
protocol<\/span> Sauna<\/span> {<\/span> ...<\/span> }<\/span>\r\n<\/code><\/pre>\n
public<\/span> interface<\/span> Animal<\/span> {<\/span> ...<\/span> }<\/span>\r\n<\/code><\/pre>\n
\u63a5\u53e3\u4e0e\u534f\u8bae\u4e00\u6837\uff0c\u5f3a\u5236\u7c7b\u4e2d\u65b9\u6cd5\u7684\u5b9a\u4e49\u3002
\n\u5f53\u5b9a\u4e49\u7c7b\u4e4b\u95f4\u5171\u540c\u7684\u89c4\u8303\u65f6\uff0c\u4f7f\u7528\u63a5\u53e3\uff1b\u800c\u62bd\u8c61\u7c7b\u5219\u7528\u4e8e\u5b9a\u4e49\u5176\u4ed6\u7c7b\u7684\u6846\u67b6\u3002<\/p>\n
\u8bbf\u95ee\u4fee\u9970\u7b26<\/p>\n
\u8fc5\u901f<\/p>\n
\n
\n\n\n\u4fee\u98fe\u5b50<\/th>\n\u540c\u30af\u30e9\u30b9<\/th>\n\u30e2\u30b8\u30e5\u30fc\u30eb<\/th>\n\u30d5\u30a1\u30a4\u30eb<\/th>\n\u7d99\u627f\u3001\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9<\/th>\n<\/tr>\n<\/thead>\n\n\nopen<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n<\/tr>\n\npublic<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n–<\/td>\n<\/tr>\n\nfileprivate<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n<\/tr>\n\ninternal<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n\nprivate<\/td>\n\u25cb<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n<\/tbody>\n
\u5982\u679c\u4e0a\u9762\u7684\u6e05\u5355\u6709\u9519\u8bef\uff0c\u8bf7\u6307\u6b63\u3002<\/p>\n
\u30fbopen \u5982\u679c\u5bfc\u5165\u4e86\u8be5\u6a21\u5757\uff0c\u5219\u53ef\u4ee5\u8bbf\u95ee\u3002\u8fd8\u53ef\u4ee5\u7ee7\u627f\u548c\u91cd\u5199\u3002
\n\u30fbpublic \u5982\u679c\u5bfc\u5165\u4e86\u8be5\u6a21\u5757\uff0c\u5219\u53ef\u4ee5\u8bbf\u95ee\u3002\u4f46\u65e0\u6cd5\u7ee7\u627f\u548c\u91cd\u5199\u3002
\n\u30fbfileprivate \u53ea\u80fd\u4ece\u540c\u4e00\u6587\u4ef6\u8bbf\u95ee\u3002
\n\u30fbinternal \u53ef\u4ee5\u4ece\u540c\u4e00\u6a21\u5757\u8bbf\u95ee\u3002\u8fd8\u53ef\u4ee5\u7ee7\u627f\u548c\u91cd\u5199\u3002\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u8bbf\u95ee\u4fee\u9970\u7b26\uff0c\u9ed8\u8ba4\u4e3a\u8fd9\u4e2a\u7ea7\u522b\u7684\u9650\u5236\u3002
\n\u30fbprivate(set) \u5728\u8bbe\u7f6e(set)\u65f6\u5177\u6709\u79c1\u6709\u9650\u5236\uff0c\u5728\u83b7\u53d6(get)\u65f6\u53ef\u4ee5\u4ece\u540c\u4e00\u6a21\u5757\u5185\u8bbf\u95ee\u3002
\n\u30fbprivate \u53ea\u80fd\u5728\u8be5\u7c7b\u6216\u7ed3\u6784\u4f53\u5185\u90e8\u8bbf\u95ee\uff08\u4e5f\u53ef\u4ee5\u5728\u6269\u5c55(extension)\u5185\u8bbf\u95ee\uff09\u3002<\/p>\n
Java – \u559c\u8336<\/p>\n
\n
\n\n\n\u4fee\u98fe\u5b50<\/th>\n\u540c\u30af\u30e9\u30b9<\/th>\n\u540c\u30d1\u30c3\u30b1\u30fc\u30b8<\/th>\n\u30b5\u30d6\u30af\u30e9\u30b9<\/th>\n\u4ed6<\/th>\n<\/tr>\n<\/thead>\n\n\npublic<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n<\/tr>\n\nprotected<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n–<\/td>\n<\/tr>\n\n(\u306a\u3057)<\/td>\n\u25cb<\/td>\n\u25cb<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n\nprivate<\/td>\n\u25cb<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n<\/tbody>\n
\u51fd\u6570<\/p>\n
\u6ca1\u6709\u8fd4\u56de\u503c\u7684\u51fd\u6570<\/p>\n
private<\/span> func<\/span> sayHello<\/span>()<\/span> {<\/span>\r\n    print<\/span>(<\/span>\"Hello\"<\/span>)<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
private<\/span> static<\/span> void<\/span> sayHello<\/span>()<\/span> {<\/span>\r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"Hello\"<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u30fb\u79c1\u6709\uff08private\uff09\u662f\u4e00\u4e2a\u4fee\u9970\u7b26\u3002<\/p>\n
\u6709\u8fd4\u56de\u503c\u7684\u51fd\u6570<\/p>\n
func<\/span> getAge<\/span>()<\/span> -><\/span> Int<\/span> {<\/span>\r\n    return<\/span> 20<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
public<\/span> static<\/span> int<\/span> getAge<\/span>(){<\/span>\r\n    return<\/span> 20<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5177\u6709\u8fd4\u56de\u503c\u548c\u53c2\u6570\u7684\u51fd\u6570<\/p>\n
func<\/span> happyBirthDay<\/span>(<\/span>age<\/span>:<\/span> Int<\/span>)<\/span> -><\/span> Int<\/span> {<\/span>\r\n    age<\/span> +=<\/span> 1<\/span>\r\n    return<\/span> age<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
public<\/span> static<\/span> int<\/span> happyBirthDay<\/span>(<\/span>int<\/span> age<\/span>)<\/span> {<\/span>\r\n    age<\/span>++;<\/span>\r\n    return<\/span> age<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728\u65b9\u6cd5\u524d\u52a0\u4e0astatic\u4fee\u9970\u7b26\uff0c\u5c31\u4f1a\u53d8\u6210\u9759\u6001\u65b9\u6cd5\u3002
\n\u9759\u6001\u65b9\u6cd5\u53ef\u4ee5\u76f4\u63a5\u88ab\u8c03\u7528\u548c\u4f7f\u7528\uff0c\u65e0\u9700\u5b9e\u4f8b\u5316\u7c7b\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u9759\u6001\u65b9\u6cd5\u7684\u4f18\u70b9\u3002<\/p>\n
\u30fb\u53ef\u4ee5\u5728\u4e0d\u5b9e\u4f8b\u5316\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528
\n\u30fb\u4fdd\u8bc1\u4e0d\u4f9d\u8d56\u4e8e\u72b6\u6001
\n\u30fb\u4fdd\u8bc1\u6bcf\u4e2a\u5b9e\u4f8b\u7684\u884c\u4e3a\u90fd\u4e0d\u4f1a\u6539\u53d8<\/p>\n
\u8c03\u7528\u51fd\u6570<\/p>\n
var<\/span> age<\/span> =<\/span> getAge<\/span>()<\/span>\r\nvar<\/span> newAge<\/span> =<\/span> happyBirthDay<\/span>(<\/span>age<\/span>:<\/span> age<\/span>)<\/span> \/\/ getAge\u3067\u53d6\u5f97\u3057\u305fage\u3092\u4ee3\u5165(Int\u306e20)<\/span>\r\n\/\/ newAge 21<\/span>\r\n<\/code><\/pre>\n
int<\/span> age<\/span> =<\/span> getAge<\/span>;<\/span>\r\nint<\/span> newAge<\/span> =<\/span> happyBirthDay<\/span>(<\/span>age<\/span>);<\/span> \/\/ getAge\u3067\u53d6\u5f97\u3057\u305fage\u3092\u4ee3\u5165(int\u306e20)<\/span>\r\n\/\/ newAge  21<\/span>\r\n<\/code><\/pre>\n
\u5176\u4ed6<\/p>\n
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\/\/ Int\u304b\u3089String\u3078\u5909\u63db<\/span>\r\nvar<\/span> str<\/span> =<\/span> String<\/span>(<\/span>5<\/span>)<\/span>\r\n\r\n\/\/ String\u304b\u3089Int?\u3078\u5909\u63db<\/span>\r\nvar<\/span> int<\/span> =<\/span> Int<\/span>(<\/span>\"5\"<\/span>)<\/span>\r\n<\/code><\/pre>\n
\/\/ int\u304b\u3089String\u3078\u5909\u63db<\/span>\r\nint<\/span> num<\/span> =<\/span> 10<\/span>;<\/span>\r\nInteger<\/span> numInt<\/span> =<\/span> Integer<\/span>.<\/span>valueOf<\/span>(<\/span>num<\/span>);<\/span> \/\/ Interger\u3078\u5909\u63db<\/span>\r\nString<\/span> str<\/span> =<\/span> numInt<\/span>.<\/span>toString<\/span>();<\/span> \/\/ String\u3078\u5909\u63db<\/span>\r\n\r\n\/\/ String\u304b\u3089Int\u3078\u5909\u63db<\/span>\r\nint<\/span> int1<\/span> =<\/span> Integaer<\/span>.<\/span>parseInt<\/span>(<\/span>\"5\"<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u7d50\u675f<\/p>\n
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