HashMap

HashMapDemo.java

class HashMapDemo {
    public static void main(String[ ] args) {
        String key = "superman";
        int size = 15;
        System.out.println("Key: " + key);
        int hashCode = key.hashCode();
        System.out.println("HashCode: " + hashCode);
        System.out.println("HashCode (Binary): " + Integer.toBinaryString(hashCode));
        int h;
        int hash = (h = key.hashCode()) ^ (h >>> 16);
        System.out.println("Hash: " + hash);
        System.out.println("Hash (Binary): " + Integer.toBinaryString(hash));
        System.out.println("Size (Binary): " + Integer.toBinaryString(size));
        int x = size & hash;
        System.out.println("Location: " + x);
        System.out.println(Integer.toBinaryString(x));
        
        // Key: superman
        // HashCode: -1673281537
        // HashCode (Binary): 10011100010000111011111111111111
        // Hash: -1673321540
        // Hash (Binary): 10011100010000110010001110111100
        // Size (Binary): 1111
        // Location: 12
        // 1100
    }
}