Incompatible Types Error in Java

Question

I keep receiving an error that says that there are incompatible types. I copied this directly out of a book because we are supposed to make changes to the code to enhance the ga

Answer 1

push method is not generic like the rest of the class, change it to:

public void push(E target) {
    if (isFull()) {
        stretch();
    }
    data[size] = target;
    size++;
}

In any case the JDK ships with the class ArrayDeque which fulfill your requirements without being a piece o code pasted from a book.

ArrayDeque stack = new ArrayDeque();
stack.push(new YourObj());
YourObj head = stack.peek();
head = stack.pop();