SortedMap putAll() method in Java with Examples Last Updated : 25 Jan, 2021 Comments Improve Suggest changes Like Article Like Report The putAll() method of SortedMap interface in Java is used to copy all of the mappings from the specified SortedMap to this SortedMap. Syntax: void putAll(Map m) Parameters: This method has the only argument map m which contains key-value mappings to be copied to given SortedMap. Returns: This method returns previous value associated with the key if present, else return -1. Note: The putAll() method in SortedMap is inherited from the Map interface in Java. Below programs illustrate the implementation of int putAll() method: Program 1: Java // Java code to show the implementation of // putAll method in SortedMap interface import java.util.*; public class GfG { // Driver code public static void main(String[] args) { // Initializing a SortedMap SortedMap<Integer, String> map = new TreeMap<>(); map.put(1, "One"); map.put(3, "Three"); map.put(5, "Five"); map.put(7, "Seven"); map.put(9, "Nine"); System.out.println(map); SortedMap<Integer, String> mp = new TreeMap<>(); mp.put(10, "Ten"); mp.put(30, "Thirty"); mp.put(50, "Fifty"); map.putAll(mp); System.out.println(map); } } Output: {1=One, 3=Three, 5=Five, 7=Seven, 9=Nine} {1=One, 3=Three, 5=Five, 7=Seven, 9=Nine, 10=Ten, 30=Thirty, 50=Fifty} Program 2: Below is the code to show implementation of putAll(). Java // Java code to show the implementation of // putAll method in SortedMap interface import java.util.*; public class GfG { // Driver code public static void main(String[] args) { // Initializing a SortedMap SortedMap<String, String> map = new TreeMap<>(); map.put("1", "One"); map.put("3", "Three"); map.put("5", "Five"); map.put("7", "Seven"); map.put("9", "Nine"); System.out.println(map); SortedMap<String, String> mp = new TreeMap<>(); mp.put("10", "Ten"); mp.put("30", "Thirty"); mp.put("50", "Fifty"); map.putAll(mp); System.out.println(map); } } Output: {1=One, 3=Three, 5=Five, 7=Seven, 9=Nine} {1=One, 10=Ten, 3=Three, 30=Thirty, 5=Five, 50=Fifty, 7=Seven, 9=Nine} Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Map.html#put(K, %20V) Comment More infoAdvertise with us Next Article SortedMap putAll() method in Java with Examples G gopaldave Follow Improve Article Tags : Java Java - util package Java-Functions Java-SortedMap Practice Tags : Java Similar Reads SortedMap put() method in Java with Examples The put() method of SortedMap interface in Java is used to associate the specified value with the specified key in this map. Syntax: V put(K key, V value) Parameters: This method has two arguments: key: which is the left argument and value: which is the corresponding value of the key in the map. Ret 2 min read SortedMap size() method in Java with Examples The size() method of SortedMap interface in Java is used to get the size of the SortedMap which refers to the number of the key-value pair or mappings in the SortedMap. Syntax: int size() Parameters: The method does not take any parameters. Return Value: The method returns the size of the SortedMap 2 min read SortedMap get() method in Java with Examples The get() method of SortedMap interface in Java is used to retrieve or fetch the value mapped by a particular key mentioned in the parameter. It returns NULL when the map contains no such mapping for the key. Syntax: thisMap.get(Object key_element) Parameter: The method takes one parameter key_eleme 2 min read SortedMap remove() method in Java with Examples The remove() method of SortedMap interface in Java is used to remove the mapping for a key from this map if it is present in the map. Syntax: V remove(Object key) Parameters: This method has the only argument key whose mapping is to be removed from the map. Returns: This method returns the value to 2 min read SortedSet retainAll() method in Java with Examples The retainAll() method of SortedSet interface is used to retain from this SortedSet, all of its elements that are contained in the specified collection. Syntax: public boolean retainAll(Collection c) Parameters: This method takes collection c as a parameter containing elements to be retained from th 3 min read Like