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Program: How to iterate through LinkedHashMap?


Description:

This example show how to iterate through LinkedHashMap. You always get elements by its insertion order.


Code:
package com.java2novice.linkedhashmap;

import java.util.LinkedHashMap;
import java.util.Set;

public class MyMapIterate {

	public static void main(String a[]){
		
		LinkedHashMap<String, String> lhm = new LinkedHashMap<String, String>();
		lhm.put("one", "This is first element");
		lhm.put("two", "This is second element");
		lhm.put("four", "Element inserted at 3rd position");
		Set<String> keys = lhm.keySet();
		for(String k:keys){
			System.out.println(k+" -- "+lhm.get(k));
		}
	}
}

Output:
one -- This is first element
two -- This is second element
four -- Element inserted at 3rd position
<< Previous Program | Next Program >>

List Of All LinkedHashMap Sample Programs:

  1. LinkedHashMap basic operations
  2. How to iterate through LinkedHashMap?
  3. How to check whether the value exists or not in a LinkedHashMap?
  4. How to delete all entries from LinkedHashMap object?
  5. How to eliminate duplicate user defined objects as a key from LinkedHashMap?
  6. How to find user defined objects as a key from LinkedHashMap?
  7. How to delete user defined objects as a key from LinkedHashMap?
Knowledge Centre
What is System.out in Java
In System.out, out is an instance of PrintStream. It is a static member variable in System class. This is called standard output stream, connected to console.
Famous Quotations
Insanity: doing the same thing over and over again and expecting different results.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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