Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.Map;
import java.util.HashMap;
import java.util.List;
import java.util.ArrayList;

public class Main {
    public static void main(String[] args) {
        Map<Integer, String> grades = new HashMap<Integer, String>();

        grades.put(1, "A");
        grades.put(2, "B");
        grades.put(3, "C");
        grades.put(4, "D");
        grades.put(5, "E");

        String value = grades.get(1);

        List<String> dayNames = new ArrayList<String>();
        dayNames.add("Sunday");
        dayNames.add("Monday");
        dayNames.add("Tuesday");
        dayNames.add("Wednesday");

        String firstDay = dayNames.get(0);
    }
}