{"id":46812,"date":"2024-12-02T16:21:04","date_gmt":"2024-12-02T08:21:04","guid":{"rendered":"https:\/\/fwq.ai\/blog\/46812\/"},"modified":"2024-12-02T16:21:04","modified_gmt":"2024-12-02T08:21:04","slug":"%e7%ba%bf%e7%a8%8b%e5%ae%89%e5%85%a8%e7%9a%84-java-%e5%87%bd%e6%95%b0%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/46812\/","title":{"rendered":"\u7ebf\u7a0b\u5b89\u5168\u7684 Java \u51fd\u6570\u8bbe\u8ba1\u6a21\u5f0f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u7ebf\u7a0b\u5b89\u5168\u7684 Java \u51fd\u6570\u8bbe\u8ba1\u6a21\u5f0f<\/h1>\n<p><span style=\"font-size: 15px\">\u5b66\u4e60\u77e5\u8bc6\u8981\u5584\u4e8e\u601d\u8003\uff0c\u601d\u8003\uff0c\u518d\u601d\u8003\uff01\u4eca\u5929\u7c73\u4e91\u5c0f\u7f16\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u7ebf\u7a0b\u5b89\u5168\u7684 Java \u51fd\u6570\u8bbe\u8ba1\u6a21\u5f0f\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u4e3b\u8981\u5305\u542b<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6216\u51c6\u5907\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\uff0c\u5c31\u90fd\u4e0d\u8981\u9519\u8fc7\u672c\u6587\u5566~\u8ba9\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff0c\u80fd\u5e2e\u52a9\u5230\u4f60\u5c31\u66f4\u597d\u4e86\uff01<\/span><\/p>\n<p>\u7ebf\u7a0b\u5b89\u5168\u7684 Java \u51fd\u6570\u8bbe\u8ba1\u6a21\u5f0f\u53ef\u786e\u4fdd\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u5171\u4eab\u6570\u636e\u7684\u5b89\u5168\u8bbf\u95ee\u548c\u4fee\u6539\u3002\u6a21\u5f0f\uff1a\u4e0d\u53ef\u53d8\u6027\uff1a\u521b\u5efa\u4e0d\u53ef\u53d8\u5bf9\u8c61\uff0c\u786e\u4fdd\u6570\u636e\u65e0\u6cd5\u88ab\u4fee\u6539\u3002\u540c\u6b65\uff1a\u4f7f\u7528\u9501\u673a\u5236\u786e\u4fdd\u4ec5\u4e00\u4e2a\u7ebf\u7a0b\u8bbf\u95ee\u5171\u4eab\u6570\u636e\u3002\u539f\u5b50\u6027\u64cd\u4f5c\uff1a\u4f7f\u7528\u539f\u5b50\u64cd\u4f5c\u786e\u4fdd\u5171\u4eab\u6570\u636e\u7684\u66f4\u65b0\u4e00\u6b21\u5b8c\u6210\u3002\u5b9e\u6218\u6848\u4f8b\uff1a\u4f7f\u7528\u4e0d\u53ef\u53d8\u6027\u6a21\u5f0f\u521b\u5efa\u5e76\u53d1\u73af\u5883\u4e2d\u7684\u5171\u4eab\u7f13\u5b58\uff0c\u901a\u8fc7\u66ff\u6362\u65e7\u503c\u6765\u5b9e\u73b0\u5199\u5165\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729929281671ca0411ad10.jpg\" class=\"aligncenter\" title=\"\u7ebf\u7a0b\u5b89\u5168\u7684 Java \u51fd\u6570\u8bbe\u8ba1\u6a21\u5f0f\u63d2\u56fe\" alt=\"\u7ebf\u7a0b\u5b89\u5168\u7684 Java \u51fd\u6570\u8bbe\u8ba1\u6a21\u5f0f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u7ebf\u7a0b\u5b89\u5168\u7684 Java \u51fd\u6570\u8bbe\u8ba1\u6a21\u5f0f<\/strong><\/p>\n<p>\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\uff0c\u591a\u4e2a\u7ebf\u7a0b\u5e76\u53d1\u8bbf\u95ee\u548c\u4fee\u6539\u5171\u4eab\u6570\u636e\u65f6\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u7684\u4e0d\u4e00\u81f4\u6216\u635f\u574f\u3002\u4e3a\u4e86\u5904\u7406\u8fd9\u79cd\u60c5\u51b5\uff0c\u53ef\u4ee5\u91c7\u7528\u7ebf\u7a0b\u5b89\u5168\u7684\u51fd\u6570\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u4ee5\u786e\u4fdd\u5171\u4eab\u6570\u636e\u5728\u5e76\u53d1\u8bbf\u95ee\u65f6\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n<p><strong>\u4e0d\u53ef\u53d8\u6027<\/strong><\/p>\n<p><strong>\u539f\u7406\uff1a<\/strong>\u521b\u5efa\u4e00\u4e2a\u4e0d\u53ef\u53d8\u7684\u5bf9\u8c61\uff0c\u4f7f\u8be5\u5bf9\u8c61\u4e00\u65e6\u521b\u5efa\u5c31\u4e0d\u80fd\u88ab\u4fee\u6539\u3002<\/p>\n<p><strong>\u4f18\u70b9\uff1a<\/strong>\u662f\u6700\u7b80\u5355\u4e14\u6700\u6709\u6548\u7684\u7ebf\u7a0b\u5b89\u5168\u6a21\u5f0f\uff0c\u65e0\u9700\u4efb\u4f55\u540c\u6b65\u673a\u5236\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>public class ImmutableString {\n\n    private final String value;\n\n    public ImmutableString(String value) {\n        this.value = value;\n    }\n\n    public String getValue() {\n        return value;\n    }\n}<\/pre>\n<p><strong>\u540c\u6b65<\/strong><\/p>\n<p><strong>\u539f\u7406\uff1a<\/strong>\u4f7f\u7528\u540c\u6b65\u673a\u5236\uff0c\u5982 <code>synchronized<\/code> \u5173\u952e\u5b57\u6216 <code>ReentrantLock<\/code> \u9501\uff0c\u786e\u4fdd\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u5728\u4efb\u4f55\u7ed9\u5b9a\u65f6\u95f4\u8bbf\u95ee\u5171\u4eab\u6570\u636e\u3002<\/p>\n<p><strong>\u4f18\u70b9\uff1a<\/strong>\u5f53\u5171\u4eab\u6570\u636e\u9700\u8981\u4fee\u6539\u65f6\uff0c\u540c\u6b65\u662f\u5e38\u7528\u7684\u65b9\u6cd5\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>public class SynchronizedCounter {\n\n    private int count;\n\n    public synchronized void increment() {\n        count++;\n    }\n\n    public synchronized int getCount() {\n        return count;\n    }\n}<\/pre>\n<p><strong>\u539f\u5b50\u6027\u64cd\u4f5c<\/strong><\/p>\n<p><strong>\u539f\u7406\uff1a<\/strong>\u4f7f\u7528\u539f\u5b50\u64cd\u4f5c\uff0c\u5982 <code>AtomicInteger<\/code> \u6216 <code>concurrent collections<\/code>\uff0c\u786e\u4fdd\u66f4\u65b0\u5171\u4eab\u6570\u636e\u662f\u539f\u5b50\u7684\uff0c\u5373\u4e00\u6b21\u5b8c\u6210\uff0c\u4e0d\u4f1a\u88ab\u5176\u4ed6\u7ebf\u7a0b\u4e2d\u65ad\u3002<\/p>\n<p><strong>\u4f18\u70b9\uff1a<\/strong>\u5f53\u9700\u8981\u5bf9\u5171\u4eab\u6570\u636e\u8fdb\u884c\u7b80\u5355\u7684\u66f4\u65b0\u65f6\uff0c\u539f\u5b50\u6027\u64cd\u4f5c\u662f\u4e00\u79cd\u9ad8\u6027\u80fd\u7684\u9009\u62e9\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>public class AtomicCounter {\n\n    private AtomicInteger count = new AtomicInteger(0);\n\n    public void increment() {\n        count.incrementAndGet();\n    }\n\n    public int getCount() {\n        return count.get();\n    }\n}<\/pre>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4e00\u4e2a\u5e76\u53d1\u73af\u5883\u4e2d\u7684\u5171\u4eab\u7f13\u5b58\u793a\u4f8b\uff0c\u5176\u4e2d\u591a\u4e2a\u7ebf\u7a0b\u9700\u8981\u8bfb\u5199\u7f13\u5b58\u3002\u4f7f\u7528\u4e0d\u53ef\u53d8\u6027\u6a21\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4e0d\u53ef\u53d8\u7684\u7f13\u5b58\u5bf9\u8c61\uff0c\u5728\u65b0\u503c\u53ef\u7528\u65f6\u66ff\u6362\u65e7\u503c\uff1a<\/p>\n<pre>public class ConcurrentCache&lt;K, V&gt; {\n\n    private ImmutableMap&lt;K, V&gt; cache;\n\n    public synchronized void put(K key, V value) {\n        cache = ImmutableMap.&lt;K, V&gt;builder().putAll(cache).put(key, value).build();\n    }\n\n    public V get(K key) {\n        return cache.get(key);\n    }\n}<\/pre>\n<p>\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u7ebf\u7a0b\u5b89\u5168\u7684 Java \u51fd\u6570\u8bbe\u8ba1\u6a21\u5f0f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7ebf\u7a0b\u5b89\u5168\u7684 Java \u51fd\u6570\u8bbe\u8ba1\u6a21\u5f0f \u5b66\u4e60\u77e5\u8bc6\u8981\u5584\u4e8e\u601d\u8003\uff0c\u601d\u8003\uff0c\u518d\u601d\u8003\uff01\u4eca\u5929\u7c73\u4e91\u5c0f\u7f16\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u7ebf\u7a0b\u5b89\u5168\u7684 Java \u51fd\u6570\u8bbe\u8ba1\u6a21\u5f0f\u300b\uff0c\u4ee5\u4e0b\u5185\u5bb9\u4e3b\u8981\u5305\u542b\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6216\u51c6\u5907\u5b66\u4e60\u6587\u7ae0\uff0c\u5c31\u90fd\u4e0d\u8981\u9519\u8fc7\u672c\u6587\u5566~\u8ba9\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff0c\u80fd\u5e2e\u52a9\u5230\u4f60\u5c31\u66f4\u597d\u4e86\uff01 \u7ebf\u7a0b\u5b89\u5168\u7684 Java \u51fd\u6570\u8bbe\u8ba1\u6a21\u5f0f\u53ef\u786e\u4fdd\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u5171\u4eab\u6570\u636e\u7684\u5b89\u5168\u8bbf\u95ee\u548c\u4fee\u6539\u3002\u6a21\u5f0f\uff1a\u4e0d\u53ef\u53d8\u6027\uff1a\u521b\u5efa\u4e0d\u53ef\u53d8\u5bf9\u8c61\uff0c\u786e\u4fdd\u6570\u636e\u65e0\u6cd5\u88ab\u4fee\u6539\u3002\u540c\u6b65\uff1a\u4f7f\u7528\u9501\u673a\u5236\u786e\u4fdd\u4ec5\u4e00\u4e2a\u7ebf\u7a0b\u8bbf\u95ee\u5171\u4eab\u6570\u636e\u3002\u539f\u5b50\u6027\u64cd\u4f5c\uff1a\u4f7f\u7528\u539f\u5b50\u64cd\u4f5c\u786e\u4fdd\u5171\u4eab\u6570\u636e\u7684\u66f4\u65b0\u4e00\u6b21\u5b8c\u6210\u3002\u5b9e\u6218\u6848\u4f8b\uff1a\u4f7f\u7528\u4e0d\u53ef\u53d8\u6027\u6a21\u5f0f\u521b\u5efa\u5e76\u53d1\u73af\u5883\u4e2d\u7684\u5171\u4eab\u7f13\u5b58\uff0c\u901a\u8fc7\u66ff\u6362\u65e7\u503c\u6765\u5b9e\u73b0\u5199\u5165\u3002 \u7ebf\u7a0b\u5b89\u5168\u7684 Java \u51fd\u6570\u8bbe\u8ba1\u6a21\u5f0f \u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\uff0c\u591a\u4e2a\u7ebf\u7a0b\u5e76\u53d1\u8bbf\u95ee\u548c\u4fee\u6539\u5171\u4eab\u6570\u636e\u65f6\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u7684\u4e0d\u4e00\u81f4\u6216\u635f\u574f\u3002\u4e3a\u4e86\u5904\u7406\u8fd9\u79cd\u60c5\u51b5\uff0c\u53ef\u4ee5\u91c7\u7528\u7ebf\u7a0b\u5b89\u5168\u7684\u51fd\u6570\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u4ee5\u786e\u4fdd\u5171\u4eab\u6570\u636e\u5728\u5e76\u53d1\u8bbf\u95ee\u65f6\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002 \u4e0d\u53ef\u53d8\u6027 \u539f\u7406\uff1a\u521b\u5efa\u4e00\u4e2a\u4e0d\u53ef\u53d8\u7684\u5bf9\u8c61\uff0c\u4f7f\u8be5\u5bf9\u8c61\u4e00\u65e6\u521b\u5efa\u5c31\u4e0d\u80fd\u88ab\u4fee\u6539\u3002 \u4f18\u70b9\uff1a\u662f\u6700\u7b80\u5355\u4e14\u6700\u6709\u6548\u7684\u7ebf\u7a0b\u5b89\u5168\u6a21\u5f0f\uff0c\u65e0\u9700\u4efb\u4f55\u540c\u6b65\u673a\u5236\u3002 \u793a\u4f8b\uff1a public class ImmutableString { private final String value; public ImmutableString(String value) { this.value = value; } public String getValue() { return value; } } \u540c\u6b65 \u539f\u7406\uff1a\u4f7f\u7528\u540c\u6b65\u673a\u5236\uff0c\u5982 synchronized \u5173\u952e\u5b57\u6216 ReentrantLock \u9501\uff0c\u786e\u4fdd\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u5728\u4efb\u4f55\u7ed9\u5b9a\u65f6\u95f4\u8bbf\u95ee\u5171\u4eab\u6570\u636e\u3002 \u4f18\u70b9\uff1a\u5f53\u5171\u4eab\u6570\u636e\u9700\u8981\u4fee\u6539\u65f6\uff0c\u540c\u6b65\u662f\u5e38\u7528\u7684\u65b9\u6cd5\u3002 \u793a\u4f8b\uff1a public class SynchronizedCounter { private int [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-46812","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/46812","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=46812"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/46812\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=46812"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=46812"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=46812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}