Contoh kode program Stack menggunakan Generic untuk berbagai tipe data

Stack.java

public class Stack<T> {  
	  
    public T[] data;  
    public int top;  
	  
    public Stack(Class<T> c, int n) {  
        this.data = (T[]) Array.newInstance(c, n);  
        this.top = 0;  
    }  
	  
    public void push(T d) {  
        if (this.top < this.data.length) {  
            this.data[this.top] = d;  
            this.top++;  
        }  
    }  
	  
    public T pop() {  
        if (this.top > 0) {  
            this.top--;  
            return this.data[this.top];  
        }  
        return null;  
    }  
	  
    public T peek() {  
        if (this.top > 0) {  
            return this.data[this.top-1];  
        }  
        return null;  
    }  
	  
    public boolean empty() {  
        return this.top == 0;  
    }  
}