Java EnumMap get() method

The get() method of Java EnumMap class is used to get the mapped value of the specified key.

Syntax

Parameters

key - the key whose associated value is to be returned

Returns

This method returns the value to which the specified key is mapped.

This method returns null if this map contains no mapping for the key.
this method returns v if this map contains a mapping from a key k to a value v such that (key == k).

Exception

Example 1

import java.util.*;
public class EnumMapGetExample1 {
   public enum Tutorial {
   CSS, Python, PHP, Java, Javascript
   };
   public static void main(String[] args) {
      EnumMap<Tutorial, String>  map =
              new EnumMap<Tutorial, String> (Tutorial.class);

   map.put(Tutorial.CSS, "1");
   map.put(Tutorial.Python, "2");
   map.put(Tutorial.PHP, "3");
   map.put(Tutorial.Java, "4");
   // print the map
   System.out.println("Map: "+map);
   // get the value for Tutorial.CSS
   String value = map.get(Tutorial.CSS);
   System.out.println("Tutorial.CSS value: "+value);
   System.out.println("Tutorial.Javascript value: "+ map.get(Tutorial.Javascript));
   }
}

Output:

Map: {CSS=1, Python=2, PHP=3, Java=4}
Tutorial.CSS value: 1
Tutorial.Javascript value: null

Example 2

import java.util.*;  
public class EnumMapGetExample2 {  
   // create an enum  
   public enum Days {  
   Monday, Tuesday, Wednesday, Thursday  
   };  
   public static void main(String[] args) {  
   //create and populate enum map  
   EnumMap<Days, String> map= new EnumMap<Days, String>(Days.class);  
   
   map.put(Days.Monday,"1");  
   map.put(Days.Tuesday,"2");  
   map.put(Days.Wednesday,"3");     
   // print the map
   System.out.println("Map: "+map);
   // get the value for Days.Monday
   String value = map.get(Days.Monday);
   System.out.println("Days.Monday value: "+value);
   System.out.println("Days.Thursday value: "+map.get(Days.Thursday));
   }    
}  

Output:

Map: {Monday=1, Tuesday=2, Wednesday=3}
Days.Monday value: 1
Days.Thursday value: null

Example 3

import java.util.*;  
public class EnumMapGetExample3 {  
   // create an enum  
   public enum Months {  
   January, February, March, April, May
   };  
  public static void main(String[] args) {  
   //create and populate enum map  
   EnumMap< Months, String>  map =
              new EnumMap< Months, String> (Months.class);

   map.put(Months.January,"1");  
   map.put(Months.February,"2");  
   map.put(Months.March,"3");     
   map.put(Months.April,"4");   
   // print the map
   System.out.println("Map: "+map);
   // get the value for Days.Monday
   String value = map.get(Months.March);
   System.out.println("Months.March value: "+value);
   System.out.println("Months.May value: "+map.get(Months.May));
   }    
}

Output:

Map: {January=1, February=2, March=3, April=4}
Months.March value: 3
Months.May value: null

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Java EnumMap get() method

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Java EnumMap get() method

Syntax

Parameters

Returns

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Example 1

Example 2

Example 3

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