{"id":728,"date":"2025-01-04T12:22:32","date_gmt":"2025-01-04T04:22:32","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=728"},"modified":"2025-01-04T12:22:32","modified_gmt":"2025-01-04T04:22:32","slug":"%e5%9c%a8-java-%e4%b8%ad%ef%bc%8c%e8%a6%81%e6%8e%8c%e6%8f%a1%e8%bf%99%e4%ba%9b%e9%9b%86%e5%90%88%e7%b1%bb%e5%8f%8a%e5%85%b6%e5%b8%b8%e8%a7%81%e7%9a%84%e5%87%bd%e6%95%b0%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/01\/04\/%e5%9c%a8-java-%e4%b8%ad%ef%bc%8c%e8%a6%81%e6%8e%8c%e6%8f%a1%e8%bf%99%e4%ba%9b%e9%9b%86%e5%90%88%e7%b1%bb%e5%8f%8a%e5%85%b6%e5%b8%b8%e8%a7%81%e7%9a%84%e5%87%bd%e6%95%b0%e4%bd%bf%e7%94%a8\/","title":{"rendered":"\u5728 Java \u4e2d\uff0c\u8981\u638c\u63e1\u8fd9\u4e9b\u96c6\u5408\u7c7b\u53ca\u5176\u5e38\u89c1\u7684\u51fd\u6570\u4f7f\u7528"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5728 Java \u4e2d\uff0c\u96c6\u5408\u6846\u67b6\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u4e2a\u90e8\u5206\uff0c\u7528\u6765\u5904\u7406\u52a8\u6001\u6570\u636e\u7684\u5b58\u50a8\u548c\u64cd\u4f5c\u3002\u5e38\u89c1\u7684\u96c6\u5408\u7c7b\u5305\u62ec <strong>List<\/strong>\u3001<strong>Set<\/strong>\u3001<strong>Map<\/strong> \u7b49\uff0c\u5b83\u4eec\u90fd\u6709\u5404\u79cd\u5e38\u7528\u7684\u51fd\u6570\u548c\u64cd\u4f5c\u65b9\u6cd5\u3002\u638c\u63e1\u8fd9\u4e9b\u96c6\u5408\u7c7b\u53ca\u5176\u5e38\u89c1\u7684\u51fd\u6570\u4f7f\u7528\u662f\u5237\u9898\u65f6\u5e38\u89c1\u7684\u9700\u6c42\uff0c\u5c24\u5176\u662f\u5728\u7b97\u6cd5\u548c\u6570\u636e\u7ed3\u6784\u7684\u9898\u76ee\u4e2d\u3002\u4ee5\u4e0b\u662f Java \u96c6\u5408\u7c7b\u5e38\u89c1\u64cd\u4f5c\u53ca\u7c7b\u578b\u8f6c\u6362\u7684\u603b\u7ed3\uff1a<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u3001Java \u96c6\u5408\u7c7b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">1\u3001<strong>List<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\"><\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7279\u70b9<\/strong>\uff1a\u6709\u5e8f\uff0c\u53ef\u91cd\u590d\u7684\u96c6\u5408\u3002\u4f7f\u7528 <strong>ArrayList<\/strong> \u6216 <strong>LinkedList<\/strong> \u5b9e\u73b0\u3002<\/li>\n\n\n\n<li><strong>\u5e38\u7528\u65b9\u6cd5<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li><code>add(E e)<\/code>\uff1a\u5411\u5217\u8868\u4e2d\u6dfb\u52a0\u5143\u7d20\u3002<\/li>\n\n\n\n<li><code>get(int index)<\/code>\uff1a\u83b7\u53d6\u6307\u5b9a\u7d22\u5f15\u7684\u5143\u7d20\u3002<\/li>\n\n\n\n<li><code>remove(int index)<\/code>\uff1a\u79fb\u9664\u6307\u5b9a\u7d22\u5f15\u7684\u5143\u7d20\u3002<\/li>\n\n\n\n<li><code>contains(Object o)<\/code>\uff1a\u5224\u65ad\u5217\u8868\u4e2d\u662f\u5426\u5305\u542b\u6307\u5b9a\u5143\u7d20\u3002<\/li>\n\n\n\n<li><code>size()<\/code>\uff1a\u83b7\u53d6\u5217\u8868\u7684\u5927\u5c0f\u3002<\/li>\n\n\n\n<li><code>set(int index, E element)<\/code>\uff1a\u66ff\u6362\u6307\u5b9a\u4f4d\u7f6e\u7684\u5143\u7d20\u3002<\/li>\n\n\n\n<li><code>indexOf(Object o)<\/code>\uff1a\u8fd4\u56de\u6307\u5b9a\u5143\u7d20\u7684\u7d22\u5f15\u4f4d\u7f6e\u3002<\/li>\n\n\n\n<li><code>clear()<\/code>\uff1a\u6e05\u7a7a\u5217\u8868\u3002<\/li>\n\n\n\n<li><code>isEmpty()<\/code>\uff1a\u5224\u65ad\u5217\u8868\u662f\u5426\u4e3a\u7a7a\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5e38\u89c1\u5b9e\u73b0\u7c7b<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li><strong>ArrayList<\/strong>\uff1a\u57fa\u4e8e\u6570\u7ec4\u5b9e\u73b0\uff0c\u67e5\u627e\u6548\u7387\u9ad8\uff0c\u63d2\u5165\u5220\u9664\u6548\u7387\u4f4e\u3002<\/li>\n\n\n\n<li><strong>LinkedList<\/strong>\uff1a\u57fa\u4e8e\u94fe\u8868\u5b9e\u73b0\uff0c\u63d2\u5165\u5220\u9664\u6548\u7387\u9ad8\uff0c\u67e5\u627e\u6548\u7387\u4f4e\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">2\u3001<strong>Set<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\"><\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7279\u70b9<\/strong>\uff1a\u65e0\u5e8f\uff0c\u4e0d\u91cd\u590d\u7684\u96c6\u5408\u3002\u4f7f\u7528 <strong>HashSet<\/strong>\u3001<strong>LinkedHashSet<\/strong> \u548c <strong>TreeSet<\/strong> \u5b9e\u73b0\u3002<\/li>\n\n\n\n<li><strong>\u5e38\u7528\u65b9\u6cd5<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li><code>add(E e)<\/code>\uff1a\u6dfb\u52a0\u5143\u7d20\uff0c\u8fd4\u56de\u662f\u5426\u6210\u529f\u3002<\/li>\n\n\n\n<li><code>contains(Object o)<\/code>\uff1a\u5224\u65ad\u96c6\u5408\u4e2d\u662f\u5426\u5305\u542b\u6307\u5b9a\u5143\u7d20\u3002<\/li>\n\n\n\n<li><code>remove(Object o)<\/code>\uff1a\u5220\u9664\u6307\u5b9a\u5143\u7d20\u3002<\/li>\n\n\n\n<li><code>size()<\/code>\uff1a\u83b7\u53d6\u96c6\u5408\u7684\u5927\u5c0f\u3002<\/li>\n\n\n\n<li><code>clear()<\/code>\uff1a\u6e05\u7a7a\u96c6\u5408\u3002<\/li>\n\n\n\n<li><code>isEmpty()<\/code>\uff1a\u5224\u65ad\u96c6\u5408\u662f\u5426\u4e3a\u7a7a\u3002<\/li>\n\n\n\n<li><code>iterator()<\/code>\uff1a\u8fd4\u56de\u96c6\u5408\u7684\u8fed\u4ee3\u5668\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5e38\u89c1\u5b9e\u73b0\u7c7b<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li><strong>HashSet<\/strong>\uff1a\u57fa\u4e8e\u54c8\u5e0c\u8868\u5b9e\u73b0\uff0c\u65e0\u5e8f\u3001\u4e0d\u91cd\u590d\u3002<\/li>\n\n\n\n<li><strong>LinkedHashSet<\/strong>\uff1a\u7ee7\u627f HashSet\uff0c\u5143\u7d20\u63d2\u5165\u987a\u5e8f\u6709\u5e8f\u3002<\/li>\n\n\n\n<li><strong>TreeSet<\/strong>\uff1a\u57fa\u4e8e\u7ea2\u9ed1\u6811\u5b9e\u73b0\uff0c\u5143\u7d20\u81ea\u52a8\u6392\u5e8f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">3\u3001<strong>Map<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\"><\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7279\u70b9<\/strong>\uff1a\u952e\u503c\u5bf9\u5b58\u50a8\u7684\u6570\u636e\u7ed3\u6784\uff0c\u952e\u4e0d\u91cd\u590d\uff0c\u503c\u53ef\u4ee5\u91cd\u590d\u3002\u4f7f\u7528 <strong>HashMap<\/strong>\u3001<strong>TreeMap<\/strong> \u548c <strong>LinkedHashMap<\/strong> \u5b9e\u73b0\u3002<\/li>\n\n\n\n<li><strong>\u5e38\u7528\u65b9\u6cd5<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li><code>put(K key, V value)<\/code>\uff1a\u6dfb\u52a0\u952e\u503c\u5bf9\u3002<\/li>\n\n\n\n<li><code>get(Object key)<\/code>\uff1a\u6839\u636e\u952e\u83b7\u53d6\u503c\u3002<\/li>\n\n\n\n<li><code>remove(Object key)<\/code>\uff1a\u5220\u9664\u6307\u5b9a\u952e\u503c\u5bf9\u3002<\/li>\n\n\n\n<li><code>containsKey(Object key)<\/code>\uff1a\u5224\u65ad\u662f\u5426\u5305\u542b\u6307\u5b9a\u952e\u3002<\/li>\n\n\n\n<li><code>containsValue(Object value)<\/code>\uff1a\u5224\u65ad\u662f\u5426\u5305\u542b\u6307\u5b9a\u503c\u3002<\/li>\n\n\n\n<li><code>size()<\/code>\uff1a\u83b7\u53d6 Map \u4e2d\u7684\u952e\u503c\u5bf9\u4e2a\u6570\u3002<\/li>\n\n\n\n<li><code>keySet()<\/code>\uff1a\u83b7\u53d6\u6240\u6709\u952e\u7684\u96c6\u5408\u3002<\/li>\n\n\n\n<li><code>values()<\/code>\uff1a\u83b7\u53d6\u6240\u6709\u503c\u7684\u96c6\u5408\u3002<\/li>\n\n\n\n<li><code>entrySet()<\/code>\uff1a\u83b7\u53d6\u6240\u6709\u952e\u503c\u5bf9\u7684\u96c6\u5408\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5e38\u89c1\u5b9e\u73b0\u7c7b<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li><strong>HashMap<\/strong>\uff1a\u57fa\u4e8e\u54c8\u5e0c\u8868\u5b9e\u73b0\uff0c\u952e\u503c\u5bf9\u65e0\u5e8f\uff0c\u67e5\u8be2\u901f\u5ea6\u5feb\u3002<\/li>\n\n\n\n<li><strong>LinkedHashMap<\/strong>\uff1a\u7ee7\u627f HashMap\uff0c\u7ef4\u62a4\u63d2\u5165\u987a\u5e8f\u3002<\/li>\n\n\n\n<li><strong>TreeMap<\/strong>\uff1a\u57fa\u4e8e\u7ea2\u9ed1\u6811\u5b9e\u73b0\uff0c\u6309\u952e\u7684\u81ea\u7136\u987a\u5e8f\u6216\u6307\u5b9a\u7684\u6bd4\u8f83\u5668\u6392\u5e8f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">4\u3001<strong>Queue<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\"><\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7279\u70b9<\/strong>\uff1a\u5148\u8fdb\u5148\u51fa\uff08FIFO\uff09\u7684\u96c6\u5408\u3002\u5e38\u7528\u5b9e\u73b0\u7c7b\u5305\u62ec <strong>LinkedList<\/strong>\u3001<strong>PriorityQueue<\/strong> \u7b49\u3002<\/li>\n\n\n\n<li><strong>\u5e38\u7528\u65b9\u6cd5<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li><code>offer(E e)<\/code>\uff1a\u5411\u961f\u5217\u4e2d\u6dfb\u52a0\u5143\u7d20\u3002<\/li>\n\n\n\n<li><code>poll()<\/code>\uff1a\u79fb\u9664\u5e76\u8fd4\u56de\u961f\u5217\u5934\u5143\u7d20\u3002<\/li>\n\n\n\n<li><code>peek()<\/code>\uff1a\u8fd4\u56de\u961f\u5217\u5934\u5143\u7d20\uff0c\u4f46\u4e0d\u79fb\u9664\u3002<\/li>\n\n\n\n<li><code>isEmpty()<\/code>\uff1a\u5224\u65ad\u961f\u5217\u662f\u5426\u4e3a\u7a7a\u3002<\/li>\n\n\n\n<li><code>size()<\/code>\uff1a\u83b7\u53d6\u961f\u5217\u5927\u5c0f\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5e38\u89c1\u5b9e\u73b0\u7c7b<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li><strong>LinkedList<\/strong>\uff1a\u5b9e\u73b0\u4e86 Queue \u63a5\u53e3\uff0c\u53ef\u4ee5\u4f5c\u4e3a\u961f\u5217\u4f7f\u7528\u3002<\/li>\n\n\n\n<li><strong>PriorityQueue<\/strong>\uff1a\u57fa\u4e8e\u4f18\u5148\u961f\u5217\u5b9e\u73b0\uff0c\u5143\u7d20\u6309\u7167\u4f18\u5148\u7ea7\u6392\u5e8f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8c\u3001Java \u96c6\u5408\u7c7b\u5e38\u7528\u64cd\u4f5c\u793a\u4f8b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ 1. List \u793a\u4f8b\nList&lt;String&gt; list = new ArrayList&lt;&gt;();\nlist.add(\"apple\");\nlist.add(\"banana\");\nlist.add(\"cherry\");\n\nSystem.out.println(list.get(1)); \/\/ \u8f93\u51fa \"banana\"\nSystem.out.println(list.size()); \/\/ \u8f93\u51fa 3\nlist.remove(0); \/\/ \u79fb\u9664 \"apple\"\nSystem.out.println(list.contains(\"cherry\")); \/\/ \u8f93\u51fa true\n\n\/\/ 2. Set \u793a\u4f8b\nSet&lt;Integer&gt; set = new HashSet&lt;&gt;();\nset.add(1);\nset.add(2);\nset.add(3);\nset.add(2); \/\/ \u91cd\u590d\u7684\u5143\u7d20\u4e0d\u4f1a\u6dfb\u52a0\n\nSystem.out.println(set.contains(2)); \/\/ \u8f93\u51fa true\nSystem.out.println(set.size()); \/\/ \u8f93\u51fa 3\n\n\/\/ 3. Map \u793a\u4f8b\nMap&lt;String, Integer&gt; map = new HashMap&lt;&gt;();\nmap.put(\"apple\", 3);\nmap.put(\"banana\", 5);\nmap.put(\"cherry\", 2);\n\nSystem.out.println(map.get(\"banana\")); \/\/ \u8f93\u51fa 5\nSystem.out.println(map.containsKey(\"apple\")); \/\/ \u8f93\u51fa true\nSystem.out.println(map.size()); \/\/ \u8f93\u51fa 3\n\n\/\/ 4. Queue \u793a\u4f8b\nQueue&lt;String&gt; queue = new LinkedList&lt;&gt;();\nqueue.offer(\"apple\");\nqueue.offer(\"banana\");\nqueue.offer(\"cherry\");\n\nSystem.out.println(queue.peek()); \/\/ \u8f93\u51fa \"apple\"\nqueue.poll(); \/\/ \u79fb\u9664 \"apple\"\nSystem.out.println(queue.peek()); \/\/ \u8f93\u51fa \"banana\"<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e09\u3001Java \u96c6\u5408\u7c7b\u578b\u8f6c\u6362<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u5237\u9898\u8fc7\u7a0b\u4e2d\uff0c\u5e38\u5e38\u9700\u8981\u5728\u4e0d\u540c\u7c7b\u578b\u7684\u96c6\u5408\u4e4b\u95f4\u8fdb\u884c\u8f6c\u6362\u3002\u4e0b\u9762\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u7c7b\u578b\u8f6c\u6362\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>List \u8f6c Set<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   List&lt;String&gt; list = new ArrayList&lt;&gt;(Arrays.asList(\"a\", \"b\", \"c\"));\n   Set&lt;String&gt; set = new HashSet&lt;&gt;(list);<\/code><\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>Set \u8f6c List<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   Set&lt;String&gt; set = new HashSet&lt;&gt;(Arrays.asList(\"a\", \"b\", \"c\"));\n   List&lt;String&gt; list = new ArrayList&lt;&gt;(set);<\/code><\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>List \u8f6c Map<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   List&lt;String&gt; list = Arrays.asList(\"apple\", \"banana\", \"cherry\");\n   Map&lt;Integer, String&gt; map = new HashMap&lt;&gt;();\n   for (int i = 0; i &lt; list.size(); i++) {\n       map.put(i, list.get(i)); \/\/ \u5c06\u5217\u8868\u5143\u7d20\u7d22\u5f15\u4f5c\u4e3a\u952e\n   }<\/code><\/pre>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li><strong>Map \u8f6c Set\uff08\u952e\u503c\u5bf9\uff09<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   Map&lt;String, Integer&gt; map = new HashMap&lt;&gt;();\n   map.put(\"apple\", 3);\n   map.put(\"banana\", 5);\n\n   \/\/ \u83b7\u53d6\u952e\u503c\u5bf9\u96c6\u5408\n   Set&lt;Map.Entry&lt;String, Integer&gt;&gt; entrySet = map.entrySet();\n   for (Map.Entry&lt;String, Integer&gt; entry : entrySet) {\n       System.out.println(entry.getKey() + \": \" + entry.getValue());\n   }<\/code><\/pre>\n\n\n\n<ol start=\"5\" class=\"wp-block-list\">\n<li><strong>List \u8f6c String<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   List&lt;String&gt; list = Arrays.asList(\"apple\", \"banana\", \"cherry\");\n   String result = String.join(\", \", list);  \/\/ \u8f93\u51fa \"apple, banana, cherry\"<\/code><\/pre>\n\n\n\n<ol start=\"6\" class=\"wp-block-list\">\n<li><strong>Set \u8f6c Array<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   Set&lt;String&gt; set = new HashSet&lt;&gt;(Arrays.asList(\"apple\", \"banana\", \"cherry\"));\n   String&#91;] array = set.toArray(new String&#91;0]);<\/code><\/pre>\n\n\n\n<ol start=\"7\" class=\"wp-block-list\">\n<li><strong>Map \u8f6c List<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   Map&lt;String, Integer&gt; map = new HashMap&lt;&gt;();\n   map.put(\"apple\", 3);\n   map.put(\"banana\", 5);\n\n   \/\/ \u8f6c\u6362\u4e3a\u5217\u8868\uff0c\u53ea\u53d6\u952e\n   List&lt;String&gt; keyList = new ArrayList&lt;&gt;(map.keySet());\n\n   \/\/ \u8f6c\u6362\u4e3a\u5217\u8868\uff0c\u53ea\u53d6\u503c\n   List&lt;Integer&gt; valueList = new ArrayList&lt;&gt;(map.values());<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u56db\u3001\u5e38\u89c1\u7684\u96c6\u5408\u7c7b\u7b97\u6cd5<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u67e5\u627e\u6700\u5927\/\u6700\u5c0f\u503c<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   List&lt;Integer&gt; list = Arrays.asList(1, 5, 3, 9, 7);\n   int max = Collections.max(list); \/\/ \u6700\u5927\u503c\n   int min = Collections.min(list); \/\/ \u6700\u5c0f\u503c<\/code><\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u6392\u5e8f<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   List&lt;Integer&gt; list = Arrays.asList(1, 5, 3, 9, 7);\n   Collections.sort(list); \/\/ \u5347\u5e8f\u6392\u5e8f\n   Collections.reverse(list); \/\/ \u9006\u5e8f\u6392\u5e8f<\/code><\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u53bb\u91cd<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   List&lt;Integer&gt; list = Arrays.asList(1, 2, 2, 3, 4, 4);\n   Set&lt;Integer&gt; set = new HashSet&lt;&gt;(list); \/\/ \u4f7f\u7528 Set \u53bb\u91cd<\/code><\/pre>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li><strong>\u904d\u5386\u96c6\u5408<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   List&lt;String&gt; list = Arrays.asList(\"a\", \"b\", \"c\");\n\n   \/\/ \u666e\u901a for \u5faa\u73af\n   for (int i = 0; i &lt; list.size(); i++) {\n       System.out.println(list\n\n.get(i));\n   }\n\n   \/\/ \u589e\u5f3a for \u5faa\u73af\n   for (String s : list) {\n       System.out.println(s);\n   }\n\n   \/\/ \u4f7f\u7528 Java 8 lambda \u8868\u8fbe\u5f0f\n   list.forEach(s -&gt; System.out.println(s));<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7\u4e0d\u65ad\u5237\u9898\u548c\u5b9e\u6218\uff0c\u719f\u6089\u8fd9\u4e9b\u96c6\u5408\u7c7b\u53ca\u5176\u65b9\u6cd5\uff0c\u80fd\u591f\u5e2e\u52a9\u4f60\u5728\u5b9e\u9645\u5f00\u53d1\u548c\u7b97\u6cd5\u9898\u4e2d\u66f4\u52a0\u9ad8\u6548\u5730\u5904\u7406\u6570\u636e\u7ed3\u6784\u548c\u7b97\u6cd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Java \u4e2d\uff0c\u96c6\u5408\u6846\u67b6\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u4e2a\u90e8\u5206\uff0c\u7528\u6765\u5904\u7406\u52a8\u6001\u6570\u636e\u7684\u5b58\u50a8\u548c\u64cd\u4f5c\u3002\u5e38\u89c1\u7684\u96c6\u5408\u7c7b\u5305\u62ec List\u3001Se [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[68],"tags":[],"class_list":["post-728","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/728","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=728"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/728\/revisions"}],"predecessor-version":[{"id":729,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/728\/revisions\/729"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=728"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=728"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=728"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}