Create Java statements based on the following requirements:  1. Create an empty hash map named programs that will handle keys and values that are both of String type. 2. Map the following pairs: • BSIT – Bachelor of Science in Information Technology • BSCS – Bachelor of Science in Computer Science • BSIS – Bachelor of Science in Information Systems 3. Display the keys in a single line. 4. Delete the first entry. 5. Check whether the map contains the key "BSCpE".

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Stack operations

A stack is a linear data structure that follows certain order to perform the operation; the order will be LIFO (Last In First Out) data structure. In the stack data structure elements/items are removed and added only from the top. The topmost stack item/element is pointed by the top pointer and the element which is added to the stack first will get deleted at the last.