{"version":"1.0","provider_name":"Blog - Silicon Cloud","provider_url":"https:\/\/www.silicloud.com\/blog","author_name":"William Carter","author_url":"https:\/\/www.silicloud.com\/blog\/author\/williamcarter\/","title":"How do you iterate through a hashmap?","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"tBKjvXwDaJ\"><a href=\"https:\/\/www.silicloud.com\/blog\/how-do-you-iterate-through-a-hashmap\/\">How do you iterate through a hashmap?<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.silicloud.com\/blog\/how-do-you-iterate-through-a-hashmap\/embed\/#?secret=tBKjvXwDaJ\" width=\"600\" height=\"338\" title=\"&#8220;How do you iterate through a hashmap?&#8221; &#8212; Blog - Silicon Cloud\" data-secret=\"tBKjvXwDaJ\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.silicloud.com\/blog\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","description":"There are several ways to traverse a HashMap. Traverse using an Iterator: HashMap&lt;String, Integer&gt; hashMap = new HashMap&lt;&gt;(); \/\/ \u6dfb\u52a0\u5143\u7d20\u5230HashMap hashMap.put(\"A\", 1); hashMap.put(\"B\", 2); hashMap.put(\"C\", 3); Iterator&lt;Map.Entry&lt;String, Integer&gt;&gt; iterator = hashMap.entrySet().iterator(); while (iterator.hasNext()) { Map.Entry&lt;String, Integer&gt; entry = iterator.next(); String key = entry.getKey(); Integer value = entry.getValue(); \/\/ \u5728\u8fd9\u91cc\u5904\u7406key\u548cvalue } Traverse using a For-Each loop: [&hellip;]"}