Please can anyone with java experience help me on this two class code? The problem I'm experiencing is that when I run the main code the GUI appear, but the assigned buttons do not appear on the GUI (IsBalanced, IsFull, IsProper, Height, Nodes, Inorder buttons) but Make Tree button appear. Also, when I enter my tree (A (G (j) (1) ) (z (5) ) ) and click the Make Tree button it does not produce output. What did I do wrong Please help..

import javax.swing.*;

import org.ietf.jgss.GSSException;

import java.awt.Component;

import java.awt.event.ActionEvent;

public class BinarySearchTreeMain {

private JRadioButton IsBalancedRadioButton, IsBalancedRadioButton1;

private JRadioButton integerRadioButton, fractionRadioButton;

private JTextField expressionEntryField, expressionResultField;

private JRadioButton InorderRadioButton;

private Component IsFullButton;

public static void main(String[] args) throws GSSException {

BinarySearchTreeMain binarySearch = new BinarySearchTreeMain();

binarySearch.instantiateGui();

}

private void instantiateGui() {

JFrame window = new JFrame("Binary Tree Categorizer");

window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

JPanel panel = (JPanel) window.getContentPane();

window.setLayout(null);

JLabel promptLabel = new JLabel("Enter Tree");

promptLabel.setBounds(25, 15, 100, 20);

panel.add(promptLabel);

JLabel resultLabel = new JLabel("Output");

resultLabel.setBounds(25, 70, 100, 20);

panel.add(resultLabel);

expressionEntryField = new JTextField("", 30);

expressionEntryField.setBounds(125, 15, 350, 20);

panel.add(expressionEntryField);

expressionResultField = new JTextField("", 30);

expressionResultField.setBounds(125, 70, 350, 20);

panel.add(expressionResultField);

JButton MakeTreeButton = new JButton("MakeTree");

MakeTreeButton.setBounds(175, 125, 125, 25);

MakeTreeButton.addActionListener((ActionEvent e) ->

{

try {

String entry = expressionEntryField.getText();

validateUserInput(entry);

validateUserSelections();

sortButtonAction(entry);

} catch (Exceptione1) {

System.out.println("Uncaught Exception: " + e1);

}

});

panel.add(MakeTreeButton);

JButton IsBalancedButton = new JButton("IsBalanced");

IsBalancedButton.setBounds(175, 125, 125, 25);

IsBalancedButton.addActionListener((ActionEvent e) ->

{

try {

String entry = expressionEntryField.getText();

validateUserInput(entry);

validateUserSelections();

sortButtonAction(entry);

} catch (Exceptione1) {

System.out.println("Uncaught Exception: " + e1);

}

});

JButton IsFullButton = new JButton("IsFull");

IsFullButton.setBounds(175, 125, 125, 25);

IsFullButton.addActionListener((ActionEvent e) ->

{

try {

String entry = expressionEntryField.getText();

validateUserInput(entry);

validateUserSelections();

sortButtonAction(entry);

} catch (Exceptione1) {

System.out.println("Uncaught Exception: " + e1);

}

});

panel.add(IsFullButton);

JButton IsProperButton = new JButton("IsProper");

IsProperButton.setBounds(175, 125, 125, 25);

IsProperButton.addActionListener((ActionEvent e) ->

{

try {

String entry = expressionEntryField.getText();

validateUserInput(entry);

validateUserSelections();

sortButtonAction(entry);

} catch (Exceptione1) {

System.out.println("Uncaught Exception: " + e1);

}

});

panel.add(IsProperButton);

JButton HeightButton1 = new JButton("Height");

HeightButton1.setBounds(175, 125, 125, 25);

HeightButton1.addActionListener((ActionEvent e) ->

{

try {

String entry = expressionEntryField.getText();

validateUserInput(entry);

validateUserSelections();

sortButtonAction(entry);

} catch (Exceptione1) {

System.out.println("Uncaught Exception: " + e1);

}

});

panel.add(HeightButton1);

JButton NodesButton = new JButton("Nodes");

NodesButton.setBounds(175, 125, 125, 25);

NodesButton.addActionListener((ActionEvent e) ->

{

try {

String entry = expressionEntryField.getText();

validateUserInput(entry);

validateUserSelections();

sortButtonAction(entry);

} catch (Exceptione1) {

System.out.println("Uncaught Exception: " + e1);

}

});

panel.add(NodesButton);

JButton InOrderButton = new JButton("InOrder");

InOrderButton.setBounds(175, 125, 125, 25);

InOrderButton.addActionListener((ActionEvent e) ->

{

try {

String entry = expressionEntryField.getText();

validateUserInput(entry);

validateUserSelections();

sortButtonAction(entry);

} catch (Exceptione1) {

System.out.println("Uncaught Exception: " + e1);

}

});

panel.add(InOrderButton);

window.getRootPane().setDefaultButton(MakeTreeButton);

window.setSize(500, 275);

window.setVisible(true);

}

private void sortButtonAction(String entry) throws Exception {

BinarySearchTree binarySearchTree;

String values[] = entry.split(" ");

// TODO: Optimize

if (fractionRadioButton.isSelected()) {

binarySearchTree = new BinarySearchTree();

for (int i = 1; i < values.length; i++) {

if (values[i].split("/").length > 2) {

throw new Exception("Error. Malformed Fraction");

}

if (!values[i].contains("/")) {

Integer.parseInt(values[i]);

values[i] = values[i] + "/1";

}

binarySearchTree.bstInsert( "int",(values[i]));

}

} else {

binarySearchTree = new BinarySearchTree(Integer.parseInt(values[0]));

for (int i = 1; i < values.length; i++) {

binarySearchTree.insert(Integer.parseInt(values[i]));

}

}

if (IsBalancedRadioButton.isSelected()) {

expressionResultField.setText(binarySearchTree.ascendingOrder(binarySearchTree.getRoot()));

} else {

expressionResultField.setText(binarySearchTree.ascendingOrder(binarySearchTree.getRoot()));

}

}

private void validateUserInput(String entry) throws Exception {

if (entry.equals("")) {

throw new Exception("Please Enter an Expression.");

}

for (int i = 0; i < entry.length(); i++) {

char c = entry.charAt(i);

if (!Character.isDigit(c) && c != '/' && !Character.isWhitespace(c)) {

throw new Exception("Error: Non numeric input detected.");

}

if (c == '/' && integerRadioButton.isSelected()) {

throw new Exception("Error: List of Integers contains a fraction.");

}

}

}

private void validateUserSelections() throws Exception {

if (!fractionRadioButton.isSelected() && !integerRadioButton.isSelected()) {

throw new Exception("Please Select a Numeric Type");

}

if (!IsBalancedRadioButton.isSelected() && !IsBalancedRadioButton.isSelected()) {

throw new Exception("Please Select a Sort Type");

}

}

class BinarySearchTree {

int key;

BinarySearchTree left, right;

public BinarySearchTree(int item) {

key = item;

left = right = null;

}

public BinarySearchTree() {

}

public void bstInsert(String string, String string2) {

}

public void insert(int parseInt) {

}

public Object getRoot() {

return null;

}

public String ascendingOrder(Object root) {

return null;

}

}

//Java program to introduce Binary Tree

class BinaryTree {

//Root of the Binary Tree

BinarySearchTree root;

//Constructors

BinaryTree(int key) {

root = new BinarySearchTree(key);

}

BinaryTree() {

root = null;

}

//tree.root = new Node(1);

//tree.root.left = new Node(2);

//tree.root.right = new Node(3);

//tree.root.left.left = new Node(4);

void printPostorder(BinarySearchTree node) {

if (node == null)

return;

//first recur on left subtree

printPostorder(node.left);

//then recur on right subtree

printPostorder(node.right);

//now deal with node

System.out.print(node.key + " ");

}

//Given a binary tree print this node in inorder

void printInorder(BinarySearchTree node) {

if(node == null)

return;

//first recur on left child

printInorder(node.left);

//the print the data of node

System.out.print(node.key + " ");

//now recur on right child

printInorder(node.right);

}

//Given a binary tree, print its nodes in preorder

void printPreorder(BinarySearchTree node) {

if(node == null)

return;

//first print data of node

System.out.print(node.key + " ");

//then recur on left subtree

printPreorder(node.left);

//now recur on right subtree

printPreorder(node.right);

}

}