CODEWITHSUNDEEP
java
mangala udupa
mangala udupa

Reputation: 93

how to take last element from Map<String,Integer>

Hi I have a MAP which gives all records after counting elements. In this record set last element of MAP is the final output of counted records for me .. but how to fetch it and assign it to String ( to use it for later purpose)?

Map<String, Integer> stringsWithCount = new TreeMap<String,Integer>();
                        for (Message msg : convInfo.messages) {
                            // where ever your input comes from: turn it into lower case,
                            // so that "ccc" and "CCC" go for the same counter
                            String item = msg.userName;
                            if (stringsWithCount.containsKey(item)) {
                                stringsWithCount.put(item, stringsWithCount.get(item) + 1);
                            } else {
                                stringsWithCount.put(item, 1);
                            }
                        }

I am travesing the map like below

for (Entry<String, Integer> entry : stringsWithCount.entrySet()) {      

  System.out.println(entry.getKey()+"("+entry.getValue()+")");
                        }

Now its printing 

G_LO(1)
FCHAN95(1)
G_LO(1)
FCHAN95(2)
G_LO(1)
FCHAN95(2)
G_LO(1)
WVU(1)
FCHAN95(2)
G_LO(1)
SWONG00(1)
WVU(1)
FCHAN95(3)
G_LO(1)
SWONG00(1)
WVU(1)
FCHAN95(4)
G_LO(1)
SWONG00(1)
WVU(1)
FCHAN95(5)
G_LO(1)
SWONG00(1)
WVU(1)
FCHAN95(6)
G_LO(1)
SWONG00(1)
WVU(1)

here starting from last unique records I want to access --> FCHAN95(6) G_LO(1) SWONG00(1) WVU(1)

Upvotes: 0

Views: 1113

Answers (1)

Jekin Kalariya
Jekin Kalariya

Reputation: 3507

As treemap has built in method like below 

String lastKey=((TreeMap<String, Integer>) stringsWithCount).lastKey(); // for last key
Integer lastRecord =((TreeMap<String, Integer>) stringsWithCount).get(lastKey) // for last record

//stringsWithCount is your map variable

Upvotes: 2

Related Questions