java如何声明字符串类型 java 中怎么string定义一个对象？
\u5728java\u4e2d\u5982\u4f55\u5b9a\u4e49\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec41. java\u4e2d\u5b9a\u4e49\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\u65b9\u5f0f\u5982\u4e0b\uff0cstring\u7c7b\u578b\u548c\u5176\u4ed6\u57fa\u672c\u7c7b\u578b\u76f8\u4f3c\uff0c\u521b\u5efa\u6570\u7ec4\u6709\u4e24\u79cd\u65b9\u5f0f \uff1aString[] str={"AAA","BBB","CCC"};String str[]={"AAA","BBB","CCC"};
2.\u63a8\u8350\u7528ArrayList strArray = new ArrayList (); \u6bd4\u8f83\u7075\u6d3b\u3002
3.\u4e5f\u53ef\u4ee5\u5199\u4e3a\u5982\u4e0b\u683c\u5f0f\uff1aclass[] array; array = new class[number];\u5176\u4e2d\u524d\u534a\u53e5\u4e3a\u58f0\u660e\uff0c\u540e\u534a\u53e5\u4e3a\u521d\u59cb\u5316\uff0c\u521d\u59cb\u5316\u5fc5\u987b\u8981\u8ba9\u7f16\u8bd1\u5668\u77e5\u9053\u5927\u5c0f\uff0c\u58f0\u660e\u7684\u65f6\u5019java\u662f\u4e0d\u5206\u914d\u5185\u5b58\u7684\uff0c\u53ea\u6709\u521b\u5efa\u7684\u65f6\u5019\u4e5f\u5c31\u662fnew\u7684\u65f6\u5019\u624d\u4f1a\u5206\u914d\u5185\u5b58\u3002
\u6269\u5c55\u8d44\u6599\uff1a1.\u6570\u7ec4\u662f\u76f8\u540c\u6570\u636e\u7c7b\u578b\u7684\u5143\u7d20\u7684\u96c6\u5408\u3002
2.\u6570\u7ec4\u4e2d\u7684\u5404\u5143\u7d20\u7684\u5b58\u50a8\u662f\u6709\u5148\u540e\u987a\u5e8f\u7684\uff0c\u5b83\u4eec\u5728\u5185\u5b58\u4e2d\u6309\u7167\u8fd9\u4e2a\u5148\u540e\u987a\u5e8f\u8fde\u7eed\u5b58\u653e\u5728\u4e00\u8d77\u3002
3.\u6570\u7ec4\u5143\u7d20\u7528\u6574\u4e2a\u6570\u7ec4\u7684\u540d\u5b57\u548c\u5b83\u81ea\u5df1\u5728\u6570\u7ec4\u4e2d\u7684\u987a\u5e8f\u4f4d\u7f6e\u6765\u8868\u793a\u3002\u4f8b\u5982\uff0ca[0]\u8868\u793a\u540d\u5b57\u4e3aa\u7684\u6570\u7ec4\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0ca[1]\u4ee3\u8868\u6570\u7ec4a\u7684\u7b2c\u4e8c\u4e2a\u5143\u7d20\uff0c\u4ee5\u6b64\u7c7b\u63a8\u3002
4.\u5bf9\u4e8eVB\u7684\u6570\u7ec4\uff0c\u8868\u793a\u6570\u7ec4\u5143\u7d20\u65f6\u5e94\u6ce8\u610f\uff1a\u4e0b\u6807\u8981\u7d27\u8ddf\u5728\u6570\u7ec4\u540d\u540e\uff0c\u800c\u4e14\u7528\u5706\u62ec\u53f7\u62ec\u8d77\u6765\uff08\u4e0d\u80fd\u7528\u5176\u4ed6\u62ec\u53f7\uff09\u3002\u4e0b\u6807\u53ef\u4ee5\u662f\u5e38\u91cf\uff0c\u53d8\u91cf\uff0c\u6216\u8868\u8fbe\u5f0f\uff0c\u4f46\u5176\u503c\u5fc5\u987b\u662f\u6574\u6570\u3002\u4e0b\u6807\u5fc5\u987b\u4e3a\u4e00\u6bb5\u8fde\u7eed\u7684\u6574\u6570\uff0c\u5176\u6700\u5c0f\u503c\u6210\u4e3a\u4e0b\u754c\uff0c\u5176\u6700\u5927\u503c\u6210\u4e3a\u4e0a\u754c\u3002\u4e0d\u52a0\u8bf4\u660e\u65f6\u4e0b\u754c\u503c\u9ed8\u8ba4\u4e3a1\u3002
\u53c2\u8003\u8d44\u6599\uff1a\u5b57\u7b26\u6570\u7ec4_\u767e\u5ea6\u767e\u79d1
\u5b9a\u4e49\u4e00\u4e2astring\u7c7b\u578b\u7684\u53d8\u91cf\u6709\u4e24\u79cd\u65b9\u5f0f\uff1a
string name= "tom ";
string name =new string( "tom ")
\u4f7f\u7528\u7b2c\u4e00\u79cd\u65b9\u5f0f\u7684\u65f6\u5019\uff0c\u5c31\u4f7f\u7528\u4e86\u4e32\u6c60\uff0c
\u4f7f\u7528\u7b2c\u4e8c\u4e2d\u65b9\u5f0f\u7684\u65f6\u5019\uff0c\u5c31\u662f\u4e00\u79cd\u666e\u901a\u7684\u58f0\u660e\u5bf9\u8c61\u7684\u65b9\u5f0f
\u5982\u679c\u4f60\u4f7f\u7528\u4e86\u7b2c\u4e00\u79cd\u65b9\u5f0f\uff0c\u90a3\u4e48\u5f53\u4f60\u5728\u58f0\u660e\u4e00\u4e2a\u5185\u5bb9\u4e5f\u662f "tom "\u7684string\u65f6\uff0c\u5b83\u5c06\u4f7f\u7528\u4e32\u6c60\u91cc\u539f\u6765\u7684\u90a3\u4e2a\u5185\u5b58\uff0c\u800c\u4e0d\u4f1a\u91cd\u65b0\u5206\u914d\u5185\u5b58\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0cstring saname= "tom ",\u5c06\u4f1a\u6307\u5411\u540c\u4e00\u5757\u5185\u5b58
\u53e6\u5916\u5173\u4e8estring\u7c7b\u578b\u662f\u4e0d\u53ef\u6539\u53d8\u7684\u95ee\u9898\uff1a
string\u7c7b\u578b\u662f\u4e0d\u53ef\u6539\u53d8\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5f53\u4f60\u60f3\u6539\u53d8\u4e00\u4e2astring\u5bf9\u8c61\u7684\u65f6\u5019\uff0c\u6bd4\u5982name= "madding "
\u90a3\u4e48\u865a\u62df\u673a\u4e0d\u4f1a\u6539\u53d8\u539f\u6765\u7684\u5bf9\u8c61\uff0c\u800c\u662f\u751f\u6210\u4e00\u4e2a\u65b0\u7684string\u5bf9\u8c61\uff0c\u7136\u540e\u8ba9name\u53bb\u6307\u5411\u5b83\uff0c\u5982\u679c\u539f\u6765\u7684\u90a3\u4e2a "tom "\u6ca1\u6709\u4efb\u4f55\u5bf9\u8c61\u53bb\u5f15\u7528\u5b83\uff0c\u865a\u62df\u673a\u7684\u5783\u573e\u56de\u6536\u673a\u5236\u5c06\u63a5\u6536\u5b83\u3002
如：String str = "你好吗";
通过String进行声明字符串类型。
举例：
String str ="" ;或者String str =new String("") ;
解释：上面的效果基本是一致的，只不过是前面的是已经存在相同的值，那么直接地址引用个，后面的是new所以会直接地址和内存都被占用，所以推荐第一种写法。
备注：以上就声明了一个字符串类型，之后直接进行赋值即可：str=“asd”。
绛旓細浣跨敤鈥淪tring鈥濆彲浠ュ０鏄庡瓧绗︿覆绫诲瀷 濡傦細String str = "浣犲ソ鍚";
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