Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.Map;
import java.util.Set;
import java.util.WeakHashMap;

public class Main {
    public static void main(String[] args) {
        WeakHashMap<String, String> weakHashMap = new WeakHashMap<String, String>();

        weakHashMap.put("1", "first");
        weakHashMap.put("2", "two");
        weakHashMap.put("3", "from java2s.com");

        // printing the Map
        System.out.println("Map: " + weakHashMap);

        // returns a Set view of the Map
        Set set = weakHashMap.entrySet();

        // printing the set
        System.out.println("Set: " + set);

        // change Map value
        weakHashMap.put("3", "new value");

        // print Map and set
        System.out.println("Changed Map: " + weakHashMap);
        System.out.println("Changed Set: " + set);

    }
}