Example usage for java.util WeakHashMap isEmpty

Introduction

In this page you can find the example usage for java.util WeakHashMap isEmpty.

Prototype

public boolean isEmpty() 

Source Link

Document

Returns true if this map contains no key-value mappings.

Usage

From source file:Main.java

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

    // check map contents
    System.out.println("Checking the map entries");
    System.out.println("Map is empty: " + weakHashMap.isEmpty());

    System.out.println("Putting values into the Map");
    weakHashMap.put("1", "first");
    weakHashMap.put("2", "two");
    weakHashMap.put("3", "from java2s.com");

    // checking Map
    System.out.println("Map is empty: " + weakHashMap.isEmpty());
}

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