“`1\u3001Integer\u662fint\u7684\u5305\u88c5\u7c7b\uff0cint\u5219\u662fjava\u7684\u4e00\u79cd\u57fa\u672c\u6570\u636e\u7c7b\u578b <\/p>\n
2\u3001Integer\u53d8\u91cf\u5fc5\u987b\u5b9e\u4f8b\u5316\u540e\u624d\u80fd\u4f7f\u7528\uff0c\u800cint\u53d8\u91cf\u4e0d\u9700\u8981\u00a0<\/p>\n
3\u3001Integer\u5b9e\u9645\u662f\u5bf9\u8c61\u7684\u5f15\u7528\uff0c\u5f53new\u4e00\u4e2aInteger\u65f6\uff0c\u5b9e\u9645\u4e0a\u662f\u751f\u6210\u4e00\u4e2a\u6307\u9488\u6307\u5411\u6b64\u5bf9\u8c61\uff1b\u800cint\u5219\u662f\u76f4\u63a5\u5b58\u50a8\u6570\u636e\u503c\u00a0<\/p>\n
4\u3001Integer\u7684\u9ed8\u8ba4\u503c\u662fnull\uff0cint\u7684\u9ed8\u8ba4\u503c\u662f0<\/p>\n
\u5ef6\u4f38\uff1a\u00a0<\/p>\n
\u5173\u4e8eInteger\u548cint\u7684\u6bd4\u8f83\u00a0<\/p>\n
1\u3001\u7531\u4e8eInteger\u53d8\u91cf\u5b9e\u9645\u4e0a\u662f\u5bf9\u4e00\u4e2aInteger\u5bf9\u8c61\u7684\u5f15\u7528\uff0c\u6240\u4ee5\u4e24\u4e2a\u901a\u8fc7new\u751f\u6210\u7684Integer\u53d8\u91cf\u6c38\u8fdc\u662f\u4e0d\u76f8\u7b49\u7684\uff08\u56e0\u4e3anew\u751f\u6210\u7684\u662f\u4e24\u4e2a\u5bf9\u8c61\uff0c\u5176\u5185\u5b58\u5730\u5740\u4e0d\u540c\uff09\u3002<\/p><\/p>\n
<pre>Integer i = new Integer(100);<br>Integer j = new Integer(100);<br>System.out.print(i == j); \/\/false<\/pre><\/p>\n
2\u3001Integer\u53d8\u91cf\u548cint\u53d8\u91cf\u6bd4\u8f83\u65f6\uff0c\u53ea\u8981\u4e24\u4e2a\u53d8\u91cf\u7684\u503c\u662f\u5411\u7b49\u7684\uff0c\u5219\u7ed3\u679c\u4e3atrue\uff08\u56e0\u4e3a\u5305\u88c5\u7c7bInteger\u548c\u57fa\u672c\u6570\u636e\u7c7b\u578bint\u6bd4\u8f83\u65f6\uff0cjava\u4f1a\u81ea\u52a8\u62c6\u5305\u88c5\u4e3aint\uff0c\u7136\u540e\u8fdb\u884c\u6bd4\u8f83\uff0c\u5b9e\u9645\u4e0a\u5c31\u53d8\u4e3a\u4e24\u4e2aint\u53d8\u91cf\u7684\u6bd4\u8f83\uff09<\/p>\n
<pre>Integer i = new Integer(100);<br>int j = 100\uff1b<br>System.out.print(i == j); \/\/true<\/pre><\/p>\n
3\u3001\u975enew\u751f\u6210\u7684Integer\u53d8\u91cf\u548cnew Integer()\u751f\u6210\u7684\u53d8\u91cf\u6bd4\u8f83\u65f6\uff0c\u7ed3\u679c\u4e3afalse\u3002\uff08\u56e0\u4e3a\u975enew\u751f\u6210\u7684Integer\u53d8\u91cf\u6307\u5411\u7684\u662fjava\u5e38\u91cf\u6c60\u4e2d\u7684\u5bf9\u8c61\uff0c\u800cnew Integer()\u751f\u6210\u7684\u53d8\u91cf\u6307\u5411\u5806\u4e2d\u65b0\u5efa\u7684\u5bf9\u8c61\uff0c\u4e24\u8005\u5728\u5185\u5b58\u4e2d\u7684\u5730\u5740\u4e0d\u540c\uff09<\/p>\n
<pre>Integer i = new Integer(100);<br>Integer j = 100;<br>System.out.print(i == j); \/\/false<\/pre><\/p>\n
4\u3001\u5bf9\u4e8e\u4e24\u4e2a\u975enew\u751f\u6210\u7684Integer\u5bf9\u8c61\uff0c\u8fdb\u884c\u6bd4\u8f83\u65f6\uff0c\u5982\u679c\u4e24\u4e2a\u53d8\u91cf\u7684\u503c\u5728\u533a\u95f4-128\u5230127\u4e4b\u95f4\uff0c\u5219\u6bd4\u8f83\u7ed3\u679c\u4e3atrue\uff0c\u5982\u679c\u4e24\u4e2a\u53d8\u91cf\u7684\u503c\u4e0d\u5728\u6b64\u533a\u95f4\uff0c\u5219\u6bd4\u8f83\u7ed3\u679c\u4e3afalse<\/p>\n
<pre>Integer i = 100;<br>Integer j = 100;<br>System.out.print(i == j); \/\/true<br>Integer i = 128;<br>Integer j = 128;<br>System.out.print(i == j); \/\/false<\/pre><\/p>\n
\u5bf9\u4e8e\u7b2c4\u6761\u7684\u539f\u56e0\uff1a\u00a0<\/p>\n
java\u5728\u7f16\u8bd1Integer i = 100 ;\u65f6\uff0c\u4f1a\u7ffb\u8bd1\u6210\u4e3aInteger i = Integer.valueOf(100)\uff1b\uff0c\u800cjava API\u4e2d\u5bf9Integer\u7c7b\u578b\u7684valueOf\u7684\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n
<pre>public static Integer valueOf(int i){<br>\u00a0 \u00a0 assert IntegerCache.high >= 127;<br>\u00a0 \u00a0 if (i >= IntegerCache.low && i <= IntegerCache.high){<br>\u00a0 \u00a0 \u00a0 \u00a0 return IntegerCache.cache[i + (-IntegerCache.low)];<br>\u00a0 \u00a0 }<br>\u00a0 \u00a0 return new Integer(i);<br>}<\/pre><\/p>\n
java\u5bf9\u4e8e-128\u5230127\u4e4b\u95f4\u7684\u6570\uff0c\u4f1a\u8fdb\u884c\u7f13\u5b58\uff0cInteger i = 127\u65f6\uff0c\u4f1a\u5c06127\u8fdb\u884c\u7f13\u5b58\uff0c\u4e0b\u6b21\u518d\u5199Integer j = 127\u65f6\uff0c\u5c31\u4f1a\u76f4\u63a5\u4ece\u7f13\u5b58\u4e2d\u53d6\uff0c\u5c31\u4e0d\u4f1anew\u4e86<\/p>\n
“`<\/p>\n","protected":false},"excerpt":{"rendered":"
“`1\u3001Integer\u662fint\u7684\u5305\u88c5\u7c7b\uff0cint\u5219\u662fjava\u7684\u4e00\u79cd\u57fa\u672c\u6570\u636e\u7c7b\u578b 2\u3001In […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-37211","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/37211","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=37211"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/37211\/revisions"}],"predecessor-version":[{"id":37212,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/37211\/revisions\/37212"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=37211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=37211"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=37211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}