How to extract HashMap values?
Answers were Sorted based on User's Feedback
Answer / siddpany
class hashMap
{
public static void main(String args[])
{
HashMap map = new HashMap();
map.put("key1",200);
map.put("key1",100);
map.put("key1",400);
map.put("key1",700);
Set set = map.keySet();
//for each loop
for(Object object :set)
{
System.out.println(map.get(Object));
}
Is This Answer Correct ? | 11 Yes | 4 No |
Answer / srikanth
package com.sri;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
public class entry {
public static void main(String[] args) {
try{
HashMap<Integer,Integer>tm=new
HashMap<Integer,Integer>();
tm.put(100,200);
tm.put(200,101);
tm.put(600,700);
tm.put(700,103);
tm.put(900,104);
Set s=tm.entrySet();
Iterator it=s.iterator();
while(it.hasNext()){
Map.Entry me=(Map.Entry)it.next();
System.out.println(me.getKey()
+"......"+me.getValue());
}
}catch(Exception e){
e.printStackTrace();
}
}
}
Is This Answer Correct ? | 3 Yes | 0 No |
Answer / prakash
By using Iterator interface and by using enhanced for
loop(for each for loop).
Is This Answer Correct ? | 2 Yes | 0 No |
Answer / qamar islam
package Qamar;
import java.util.*;
import javax.xml.crypto.dsig.spec.HMACParameterSpec;
public class HashMapExtract {
public static void main(String args[])
{
HashMap<Integer, String> hm=new HashMap<Integer, String>();
hm.put(1, "Qamar");
hm.put(2, "Gulnar");
hm.put(3, "Qamar");
hm.put(4, "Gulnar");
hm.put(51, "Qamar");
hm.put(6, "Gulnar");
Set set =hm.entrySet();
Iterator itr=set.iterator();
while(itr.hasNext())
{
System.out.println("values in hashmap: "+itr.next());
}
}
}
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / prachi
By using Map interface in-built funtions either keySet() or entrySet().
Is This Answer Correct ? | 0 Yes | 0 No |
What is a class variable?
Why are functions called methods in java?
What is a java lambda expression?
What is string manipulation?
Is sizeof a preprocessor?
Difference between abstract class and Interfaces?
7 Answers CTS, iFlex, PA Consulting, Sai Softech, Value Chain,
How can you make a class serializable in java?
What are the different collection views provided by maps?
What JNDI(Java Naming and Directory Interface) provides?
hr interview how many minutes asking question
Why are strings immutable in Java?
What is constructor chaining in java?