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This article introduces the relevant knowledge of "what are the traversing ways of HashTable". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Package com.xing.lab.util;import java.util.Enumeration;import java.util.Hashtable;import java.util.Iterator;import java.util.Map;import java.util.Map.Entry;public class TraverseHashTable {public static void main (String [] args) {Hashtable hashtable = new Hashtable (); hashtable.put ("1", "aa"); hashtable.put ("2", "bb"); hashtable.put ("3", "cc") / / the first hashtable traversal method System.out.println ("the first traversal mode"); for (Iterator iterator = hashtable.keySet (). Iterator (); iterator.hasNext ();) {String key = iterator.next (); System.out.println ("key-" + key) System.out.println ("value-" + hashtable.get (key));} / / the second hashtable traversal mode System.out.println ("the second traversal mode"); for (Iterator iterator = hashtable.entrySet (). Iterator (); iterator.hasNext ();) {Entry entry = iterator.next () System.out.println ("key-" + entry.getKey ()); System.out.println ("value-" + entry.getValue ());} / / the third hashtable traversal mode System.out.println ("the third traversal mode") For (Map.Entry entry: hashtable.entrySet ()) {System.out.println ("key-" + entry.getKey ()); System.out.println ("value-" + entry.getValue ());} / / the fourth traversal mode System.out.println ("the fourth traversal mode") Enumeration e = hashtable.keys (); while (e.hasMoreElements ()) {String key = e.nextElement (); System.out.println ("key-" + key); System.out.println ("value-" + hashtable.get (key)) } / / in the fifth traversal mode (get all values) System.out.println ("fifth traversal mode"); Enumeration e2 = hashtable.elements (); while (e2.hasMoreElements ()) {String string = (String) e2.nextElement (); System.out.println (string) This is the end of the content of "what are the ways of traversing HashTable". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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