Java program compares the execution time to ArrayList and LinkedList

package taesik; // This program is to test Assignment 4. import java.awt.Color; import java.awt.Dimension; import java.awt.Font; import java.awt.Graphics; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import java.util.*; public class Bar211 { final int W=950,H=830;//width and height of JFrame private JFrame f; private JPanel p; private JLabel lab0,lab1, lab2, lab3; // [Add] [Search] [Remove] private JButton barAddAL, barSearchAL, barRemoveAL; private JButton barAddLL, barSearchLL, barRemoveLL; private JLabel arrayAddLabel, arraySearchLabel, arrayRemoveLabel; // ArrayList private JLabel linkedAddLabel, linkedSearchLabel, linkedRemoveLabel; // LinkedList private JLabel lTadd, lTSearch, lTremove; private String iam; // my name private int scale=30; // bar scale 1/n static int howManyTests; Color colorBackGround = new Color(244, 175, 27); Color colorTitle = new Color(0,21,79); Color colorBarArrayList = new Color (255,117,0); Color colorBarLinkedList = new Color (0,21,79); String mainTitle ="ArrayList vs LinkedList: Which one is faster?"; private double timeAddAL; private double timeAddLL; private double timeSearchAL; private double timeSearchLL; private double timeRemoveAL; private double timeRemoveLL; public Bar211(String yourName, int howManyTests) { // constructor this.iam=yourName; this.howManyTests = howManyTests; f=new JFrame("Assignment 4. ArrayList vs LinkedList. CS 211, Spring 2021"); f.setSize(W, H); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); p=new JPanel() { public void paintComponent(Graphics g){ super.paintComponent(g); setBackground(colorBackGround); g.setFont( new Font( "Serif", Font.PLAIN, 20 )); g.drawString(iam, 750,770); g.fillRect(100, 630, 720, 2); updateBar(g); // try{ // Thread.sleep(10); // 1000 = 1 second // } catch (Exception exc){} repaint(); } }; p.setLayout(null); lab0 = new JLabel(mainTitle); //title on page lab0.setBounds(W/8,40,W-20,H/6); lab0.setForeground(colorTitle); lab0.setFont(new Font("Serif", Font.BOLD, 35)); f.add(p); p.add(lab0); f.setVisible(true); String[] barTitle = new String[] { "[Add]", "[Search]", "[Remove]", }; //add //labeling each set of bars with their method - add lab1 = new JLabel(barTitle[0]); lab1.setBounds(170+(200*0),640, 300,100); lab1.setFont(new Font("Serif", Font.PLAIN, 30)); lab1.setMinimumSize(new Dimension(100,100)); //label for arraylist - add arrayAddLabel = new JLabel("ArrayList"); arrayAddLabel.setBounds(130+(200*0),600, 70,100); arrayAddLabel.setFont(new Font("Serif", Font.PLAIN, 15)); arrayAddLabel.setMinimumSize(new Dimension(100,100)); //bar for arraylist - add barAddAL=new JButton(""); barAddAL.setBackground(colorBarArrayList); barAddAL.setFont(new Font("Serif", Font.PLAIN, 30)); //label for linked - add linkedAddLabel = new JLabel("LinkedList"); linkedAddLabel.setBounds(230+(200*0),600, 70,100); linkedAddLabel.setFont(new Font("Serif", Font.PLAIN, 15)); linkedAddLabel.setMinimumSize(new Dimension(100,100)); //bar for linked - add barAddLL=new JButton(""); barAddLL.setBackground(colorBarLinkedList); barAddLL.setFont(new Font("Serif", Font.PLAIN, 15)); //search() //labeling each set of bars with their method - search lab2 = new JLabel(barTitle[1]); lab2.setBounds(200+(200*1),640, 300,100); lab2.setFont(new Font("Serif", Font.PLAIN, 30)); lab2.setMinimumSize(new Dimension(100,100)); //label for arraylist - search arraySearchLabel = new JLabel("ArrayList"); arraySearchLabel.setBounds(170+(200*1),600, 70,100); arraySearchLabel.setFont(new Font("Serif", Font.PLAIN, 15)); arraySearchLabel.setMinimumSize(new Dimension(100,100)); //bar for arraylist - search barSearchAL=new JButton(""); barSearchAL.setBackground(colorBarArrayList); barSearchAL.setFont(new Font("Serif", Font.PLAIN, 30)); //label for linked - search linkedSearchLabel = new JLabel("LinkedList"); linkedSearchLabel.setBounds(270+(200*1),600, 70,100); linkedSearchLabel.setFont(new Font("Serif", Font.PLAIN, 15)); linkedSearchLabel.setMinimumSize(new Dimension(100,100)); //bar for linked - search barSearchLL=new JButton(""); barSearchLL.setBackground(colorBarLinkedList); barSearchLL.setFont(new Font("Serif", Font.PLAIN, 10)); //remove //labeling each set of bars with their method - remove lab3 = new JLabel(barTitle[2]); lab3.setBounds(220+(200*2),640, 300,100); lab3.setFont(new Font("Serif", Font.PLAIN, 30)); lab3.setMinimumSize(new Dimension(100,100)); //label for arraylist - remove arrayRemoveLabel = new JLabel("ArrayList"); arrayRemoveLabel.setBounds(210+(200*2),600, 70,100); arrayRemoveLabel.setFont(new Font("Serif", Font.PLAIN, 15)); arrayRemoveLabel.setMinimumSize(new Dimension(100,100)); //bar for arraylist - remove barRemoveAL=new JButton(""); barRemoveAL.setBackground(colorBarArrayList); barRemoveAL.setFont(new Font("Serif", Font.PLAIN, 30)); //label for linked - remove linkedRemoveLabel = new JLabel("LinkedList"); linkedRemoveLabel.setBounds(310+(200*2),600, 70,100); linkedRemoveLabel.setFont(new Font("Serif", Font.PLAIN, 15)); linkedRemoveLabel.setMinimumSize(new Dimension(100,100)); //bar for linked - remove barRemoveLL=new JButton(""); barRemoveLL.setBackground(colorBarLinkedList); barRemoveLL.setFont(new Font("Serif", Font.PLAIN, 15)); p.add(lab1); p.add(lab2); p.add(lab3); p.add(barAddAL); p.add(barSearchAL); p.add(barRemoveAL); p.add(barAddLL); p.add(barSearchLL); p.add(barRemoveLL); p.add(arrayAddLabel); p.add(arraySearchLabel); p.add(arrayRemoveLabel); p.add(linkedAddLabel); p.add(linkedSearchLabel); p.add(linkedRemoveLabel); } public void setTimeAddAL(double t) { this.timeAddAL=t; } public void setTimeAddLL(double t) { this.timeAddLL=t; } public void setTimeSearchAL(double t) { this.timeSearchAL=t; } public void setTimeSearchLL(double t) { this.timeSearchLL=t; } public void setTimeRemoveAL(double t) { this.timeRemoveAL=t; } public void setTimeRemoveLL(double t) { this.timeRemoveLL=t; } public void updateBar(Graphics g){ int tAA=(int)(timeAddAL/scale); // scale barAddAL.setBounds(130+(200*0), 630-tAA,70,tAA); if (timeAddAL>0) { g.setFont( new Font( "Serif", Font.PLAIN, 16 )); g.drawString((timeAddAL/1000.0) + " sec", 130+(200*0)+10,630-tAA-10); } int tLA=(int)timeAddLL/scale; barAddLL.setBounds(230+(200*0), 630-tLA,70,tLA); if (timeAddLL>0) { g.setFont( new Font( "Serif", Font.PLAIN, 16 )); g.drawString((timeAddLL/1000.0) + " sec", 230+(200*0)+10,630-tLA-10); } int tAG=(int)(timeSearchAL/scale); // scale barSearchAL.setBounds(170+(200*1), 630-tAG,70,tAG); if (timeSearchAL>0) { g.drawString((timeSearchAL/1000.0) + " sec", 170+(200*1)+10,630-tAG-10); } int tLG=(int)timeSearchLL/scale; barSearchLL.setBounds(270+(200*1), 630-tLG,70,tLG); if (timeSearchLL>0) { g.drawString((timeSearchLL/1000.0) + " sec", 270+(200*1)+10,630-tLG-10); } int tAR=(int)(timeRemoveAL/scale); // scale barRemoveAL.setBounds(210+(200*2), 630-tAR,70,tAR); if (timeRemoveAL>0) { g.drawString((timeRemoveAL/1000.0) + " sec", 210+(200*2)+10,630-tAR-10); } int tLR=(int)timeRemoveLL/scale; barRemoveLL.setBounds(310+(200*2), 630-tLR,70,tLR); if (timeRemoveLL>0) { g.drawString((timeRemoveLL/1000.0) + " sec", 310+(200*2)+10,630-tLR-10); } } }