Click here to watch in Youtube :
https://www.youtube.com/watch?v=ocD29fzxTVE&list=UUhwKlOVR041tngjerWxVccw
SingleKeyMultipleValueUsingList.java
Output
https://www.youtube.com/watch?v=ocD29fzxTVE&list=UUhwKlOVR041tngjerWxVccw
SingleKeyMultipleValueUsingList.java
import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; /** * HashMap - Single Key and Multiple Values using List */ public class SingleKeyMultipleValueUsingList { public static void main( String[] args ) { HashMap<String, List<String>> hashMap = new HashMap<String, List<String>>(); // create list one and store values List<String> listOne = new ArrayList<String>(); listOne.add("Apple"); listOne.add("Aeroplane"); // create list two and store values List<String> listTwo = new ArrayList<String>(); listTwo.add("Bat"); listTwo.add("Banana"); // create list three and store values List<String> listThree = new ArrayList<String>(); listThree.add("Cat"); listThree.add("Car"); // put values into hashMap hashMap.put("A", listOne); hashMap.put("B", listTwo); hashMap.put("C", listThree); System.out.println("hashMap : " + hashMap +"\n"); // iterate and display values System.out .println("Fetching Keys and corresponding [Multiple] Values \n"); for( Map.Entry<String, List<String>> entry : hashMap.entrySet() ) { String key = entry.getKey(); List<String> values = entry.getValue(); System.out.print("Key = " + key); System.out.println(" , Values = " + values ); } } }
hashMap : {A=[Apple, Aeroplane], B=[Bat, Banana], C=[Cat, Car]} Fetching Keys and corresponding [Multiple] Values Key = A , Values = [Apple, Aeroplane] Key = B , Values = [Bat, Banana] Key = C , Values = [Cat, Car]
https://sites.google.com/site/javaee4321/java-collections/SingleKeyMultipleValueDemoApp.zip?attredirects=0&d=1
See also:
hello sir im always watching your you tube videos i am a student and i am doing my project on canvasjs charts .i need help in creading chart from databse table will you please help me.. please
ReplyDeletemy requirement is.
i have one table with column liike
DateTime,var1,var2,va3,var5 and so on
i want to create line chart
DateTime on x axis
and
var1 ,var2 so on values on y axis..
using jsp and servlets.
in eclipse kepler.
..i am eagerly waiting for solution
Thank You...