MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

/**
 *Output: 
D: 99.22
A: 3434.34
C: 1378.0
B: 123.22
E: -19.08
    
B's new balance: 1123.22
 */

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

public class MainClass {
    public static void main(String args[]) {

        HashMap<String, Double> hm = new HashMap<String, Double>();

        hm.put("A", new Double(3434.34));
        hm.put("B", new Double(123.22));
        hm.put("C", new Double(1378.00));
        hm.put("D", new Double(99.22));
        hm.put("E", new Double(-19.08));

        Set<Map.Entry<String, Double>> set = hm.entrySet();

        for (Map.Entry<String, Double> me : set) {
            System.out.print(me.getKey() + ": ");
            System.out.println(me.getValue());
        }

        System.out.println();

        double balance = hm.get("B");
        hm.put("B", balance + 1000);

        System.out.println("B's new balance: " + hm.get("B"));
    }
}