List implementation using Generics types

ListGenerics.java

public class ListGenerics<Key> {
	
	private Key[] list;
	int size = 0;
	int tail = 0;
	
	final int INITIAL_SIZE = 8;
	
	@SuppressWarnings("unchecked")
	public ListGenerics() {
		list = (Key[]) new Object[INITIAL_SIZE];
	}
	
	@SuppressWarnings("unchecked")
	public ListGenerics(int n) {
		list = (Key[]) new Object[n];
	}
	
	public boolean isFull() {
		return (tail == list.length - 1);
	}
	
	public void insertEnd(Key v) {
		if (!isFull()) {
			list[tail] = v;
			tail++;
			size++;
		}
	}
	
	public void insertBeginning(Key v) {
		if(!isFull()) {
			for (int i = tail - 1; i >= 0; i--) {
				list[i+1] = list[i];
			}
			list[0] =v;
			tail++;
			size++;
		}
	}
	
	
	public boolean isEmpty() {
		return (tail==0);
	}
	
	public void delete(Key v) {
		if(!isEmpty()){
			int i = 0;
			while( v!= list[i] && i < tail) i++;   // find index of 
			// the element to delete
			
			if (i < tail) {
				for (int j = i; j <=tail  - 2; j++) {  // move all elements
					// one index to the left
					list[j] = list[j+1];
				}
				size--;
				tail--;
			}
		}
	}
	
	
	public String toString() {
		StringBuilder sb = new StringBuilder();
		
		for (int i = 0; i < size; i++) {
			sb.append(list[i] +" ");
		}
		return new String(sb);
	}
	public static void main(String[] args) {
		ListGenerics<String> l = new ListGenerics<String>();
		
		System.out.println("--- Insert in the end ---");
		l.insertEnd("12");
		l.insertEnd("3");
		l.insertEnd("33");
		l.insertEnd("7");
		l.insertEnd("2");
		l.insertEnd("40");
		System.out.println(l);
		
		System.out.println("--- Insert in the beginning ---");
		l.insertBeginning("22");
		
		System.out.println(l);
		System.out.println("--- Delete---");
		l.delete("33");
		System.out.println(l);
	}
}