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Java WeakHashMap get() Method with Example

WeakHashMap Class get() method: Here, we are going to learn about the get() method of WeakHashMap Class with its syntax and example.
Submitted by Preeti Jain, on February 23, 2020

WeakHashMap Class get() method

• get() method is available in java.util package.
• get() method is used to get the value to which the given key element (key_ele) associated in this map otherwise it returns null.
• get() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• get() method does not throw an exception at the time of returning the value of the given key element (key_ele).

Syntax:

    public Object get(Object key_ele);

Parameter(s):

• Object key_ele – represents the key element (key_ele) whose mapping is to be retrieved.

Return value:

The return type of the method is Object, it returns key element (key_ele) value when it exists otherwise it returns null.

Example:

// Java program to demonstrate the example 
// of Object get(Object key_ele) method of WeakHashMap 

import java.util.*;

public class GetOfWeakHashMap {
    public static void main(String[] args) {
        // Instantiates a WeakHashMap object
        Map < Integer, String > map = new WeakHashMap < Integer, String > ();

        // By using put() method is to add
        // key-value pairs in a WeakHashMap
        map.put(10, "C");
        map.put(20, "C++");
        map.put(50, "JAVA");
        map.put(40, "PHP");
        map.put(30, "SFDC");

        // Display WeakHashMap
        System.out.println("WeakHashMap: " + map);

        // By using get() method is to return
        // the value associated for the given
        // key element exists in this WeakHashMap
        Object val_ele = map.get(50);

        // Display val_ele
        System.out.print("map.get(50): ");
        System.out.println(val_ele);
    }
}

Output

WeakHashMap: {30=SFDC, 40=PHP, 10=C, 20=C++, 50=JAVA}
map.get(50): JAVA