Stack using integer Array

Stack.java

public class Stack {
	private int[] stack;
	private int arrayLength;
	private int current = -1;
	
	public Stack(int arrayLength) {
		this.arrayLength = arrayLength;
		stack = new int[arrayLength];
	}
	
	public void push(int value) {
		if (!isFull()) {
			stack[++current] = value;
		} else {
			System.out.println("stack overflow");
		}
	}
	
	public void pop() {
		System.out.println(!isEmpty() ? stack[current--] : "stack underflow");
	}
	
	public void peek() {
		System.out.println(!isEmpty() ? stack[current] : "stack is empty");
	}
	
	public void print() {
		for (int x : stack) {
			System.out.print(x + " ");
		}
	}
	
	public boolean isFull() {
		return (current == arrayLength-1);
	}
	
	public boolean isEmpty() {
		return (current == -1);
	}
	
	public static void main(String[] args) {
		Stack stack = new Stack(7);
				
		stack.pop();
		stack.peek();
		
		stack.push(10);
		stack.push(20);
		stack.push(30);
		stack.push(40);
		stack.push(50);
		stack.push(60);
		stack.push(70);
		
		stack.peek();
		
		stack.print();
	}
}