# 
## Overview

The **`clear`** method removes all entries of `HashMap`.

## Syntax

```kotlin
fun clear()
```

## Argument
 This method doesn't take any argument.

## Return value

This method doesn't return any value.

## Code 

The code below demonstrates how to remove all entries of `HashMap`:

fun main() {
  //create a new LinkedHashMap which can have String type as key, and int type as value
  var map : HashMap<String, Int> = HashMap<String, Int> ()
  // add two entries
  map.put("one", 1)
  map.put("two", 2)
  map.put("three", 3)

  println("The map is : $map")
  map.clear();
  println("The map is : $map")

}

## Explanation

- Line 3: We create a new `HashMap` object named `map`.
- Lines 5–7: We add three entries to the `map`, `{one=1,two=2,three=3}`, using the `put` method.
- Line 11: We use the `map` object's `clear` method. This removes all the entries of the `map`. Now, the map becomes empty `{}`.

How to remove all entries of HashMap in Kotlin

The clear() method in Kotlin's HashMap removes all entries, resulting in an empty map.