Java Best Programs

2) Create a program to get the hashmap from the given input string array where the key for the hashmap

   is first three letters of array element in uppercase and the value of hashmap is the element itself

   Input:{“goa”,”kerala”,”gujarat”}                 [string array]

   Output:{{GOA,goa},{KER,kerala},{GUJ,Gujarat}}    [hashmap]

package Set3;

import java.util.*;

public class ClassSeT02 {

public static void main(String[] args) {

      String[] s1={"goa","kerala","gujarat"};

      putvalues(s1);

}

public static void putvalues(String[] s1) {

      ArrayList<String> l1=new ArrayList<String>();

      HashMap<String,String> m1=new HashMap<String,String>();

      ArrayList<String> l2=new ArrayList<String>();

      for(String s:s1)

            l1.add(s.toUpperCase().substring(0, 3));

      for(String s:s1)

            l2.add(s); 

      for(int i=0;i<l1.size();i++)

            m1.put(l1.get(i),l2.get(i)); 

      System.out.println(m1);

}

}