JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

Checkout for Promo Codes

Program: How to delete all entries from LinkedHashMap object?


Description:

By calling clear() method on LinkedHashMap object, you can delete all elements at at time.


Code:
package com.java2novice.linkedhashmap;

import java.util.LinkedHashMap;

public class MyMapClear {

	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");
		System.out.println(lhm);
		lhm.clear();
		System.out.println(lhm);
	}
}

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
Prevent a method from being overridden
By specifying final keyword to the method you can avoid overriding in a subcalss. Similarlly one can use final at class level to prevent creating subclasses.
Famous Quotations
Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress.
-- Alfred A. Montapert

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].

Most Visited Pages

Other Interesting Sites

Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
Privacy Policy | Copyright © 2020 by Nataraja Gootooru. All Rights Reserved.