A **`LinkedHashMap`** is the same as a `HashMap`, except that a `LinkedHashMap` maintains the insertion order, whereas a `HashMap` doesn’t. Internally, `LinkedHashMap` uses a doubly-linked list to maintain the insertion order.


The **`toString`** method returns the `String` representation of a `LinkedHashMap` object.

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## Syntax


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## Parameters

This method doesn't take any parameters. 

## Return value

* This method returns a `String` as a result.
* The returned `String` contains all the entries in the order returned by the map's `entrySet` method.
* The returned `String` is enclosed by open and close braces `{}`. 
* Each entry of the `map` is separated by a comma `,`.
* Each entry is in the format of `key = value`. 
* The `key` and `value` are converted to `String` with the `String.valueOf` method. 


## Code

import java.util.LinkedHashMap;

class ToString {
    public static void main( String args[] ) {
        LinkedHashMap<Integer, String> map = new LinkedHashMap<>();
        map.put(1, "one");
        map.put(2, "two");
        System.out.println(map.toString());
    }
}

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## Explanation
In the code above:

* *Line 1*: We import the `java.util.LinkedHashMap` library.

* *Line 5*: We create a `LinkedHashMap` with the name `map`.

* *Lines 6–7*: We add two entries to the `map`.

* *Line 8*: We use the `toString()` method to get the `String` representation of the `map` and print it. 

What is the LinkedHashMap.toString() method in Java?

Provides a map's string representation, maintaining order: `{key=value}` formatted entries, comma-separated, enclosed in braces.