QUICK QUESTION. I have only a problem for the System.out.println(st.retrieve()); on this code , itputs 1235[J@15db9742 . It should be 1235. Please help me fix it!

package lab;

public class Node{

Node left;

Node right;

long val;

Node(long val_){ // constructor

val = val_;

}}

package lab;

public class SortTree{

Node root;

int treeSize;

public boolean isPresent(double value)

{

Node curr = root;

while(curr!=null)

{

if(curr.val==value)

{

return true;

}

else if(curr.val > value){ // look at left subtree

curr = curr.left;

}

else{

curr = curr.right; // go to right subtree

}}

return false;

}

public boolean insert(int value)

{

Node newNode = new Node(value);

if (root == null) {

root = newNode;

treeSize++; // tree is empty

return true;

}

Node curr = root;

Node parent = null;

while (true)

{

parent = curr;

if (value <= curr.val)

{

if (value == curr.val)

return false; // duplicate

curr = curr.left;

if (curr == null) {

parent.left = newNode;// left node

treeSize++;

return true;

}

} else {

curr = curr.right;

if (curr == null) {

parent.right = newNode;// right node

treeSize++;

return true;

}}}}

public int getCount()

{

return treeSize; // Return tree size

}

public long[] retrieve()

{

long[] array = new long[treeSize];

inorder(root, array, 0);

for(int i=0;i

}

return array;

}

public void inorder(Node root, long[] array, int index)

{

if(root!=null)

{

inorder(root.left, array, index);

System.out.print(root.val);

array[index++] = root.val;

inorder(root.right, array, index);

}}}

package lab;

public class Main

{

public static void main(String[] args)

{

SortTree st = new SortTree();

st.insert(2);

st.insert(1);

st.insert(3);

st.insert(5);

System.out.println(st.getCount());

System.out.println(st.isPresent(6));

System.out.println(st.isPresent(4));

st.insert(1); // duplicate

System.out.println(st.getCount());

System.out.println(st.retrieve());

}

}

------------------------------------------------------------------------

4 false false 4 1235[J@15db9742