
- Java.util Package Classes
- Java.util - Home
- Java.util - ArrayDeque
- Java.util - ArrayList
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- Java.util - BitSet
- Java.util - Calendar
- Java.util - Collections
- Java.util - Currency
- Java.util - Date
- Java.util - Dictionary
- Java.util - EnumMap
- Java.util - EnumSet
- Java.util - Formatter
- Java.util - GregorianCalendar
- Java.util - HashMap
- Java.util - HashSet
- Java.util - Hashtable
- Java.util - IdentityHashMap
- Java.util - LinkedHashMap
- Java.util - LinkedHashSet
- Java.util - LinkedList
- Java.util - ListResourceBundle
- Java.util - Locale
- Java.util - Observable
- Java.util - PriorityQueue
- Java.util - Properties
- Java.util - PropertyPermission
- Java.util - PropertyResourceBundle
- Java.util - Random
- Java.util - ResourceBundle
- Java.util - ResourceBundle.Control
- Java.util - Scanner
- Java.util - ServiceLoader
- Java.util - SimpleTimeZone
- Java.util - Stack
- Java.util - StringTokenizer
- Java.util - Timer
- Java.util - TimerTask
- Java.util - TimeZone
- Java.util - TreeMap
- Java.util - TreeSet
- Java.util - UUID
- Java.util - Vector
- Java.util - WeakHashMap
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- Java.util - Exceptions
- Java.util - Enumerations
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Java.util.Dictionary.put() Method
Description
The java.util.Dictionary.put(K key,V value) method maps the specified key to the specified value in this dictionary.
Declaration
Following is the declaration for java.util.Dictionary.keys() method
public abstract V put(K key,V value)
Parameters
key − the hashtable key.
value − the value.
Return Value
This method returns the value to which the key was mapped in this dictionary, or null if the key did not have a mapping.
Exception
NullPointerException − if the value or key is null
Example
The following example shows the usage of java.util.Dictionary.put() method.
package com.tutorialspoint; import java.util.*; public class DictionaryDemo { public static void main(String[] args) { // create a new hasthtable Dictionary d = new Hashtable(); // put some elements d.put("1", "Chocolate"); d.put("2", "Cocoa"); d.put("5", "Coffee"); // print how many times put was called System.out.println("Number of times put was called:" + d.size()); } }
Let us compile and run the above program, this will produce the following result −
Number of times put was called:3
java_util_dictionary.htm
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