A Java question need code to explain.

I have already pass a array by value in to a leafnode class from main class. What I have to do is use collection to add the value in array to stack . I have a data structure design. However ,I really have no idea about how to change them into a Java code.

Here is the code I done and the design.

public class LeafNode t public LeafNode (int leaf]) ( System. out. print In leaf [0]) public static void main(String [largs) [ LeafNode myLeafNode = new LeafNode ( new int[] {100, 120, 140, 160} )