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POUnknown Errors in my code
 

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  1. POUnknown Errors in my code
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    <p>I am getting three errors when I run this code but have no idea what they are since this was provided skeleton code. I'll post the code and maybe someone could help me out. It might be a missing library or something simple but I would appreciate someones help. The errors are saying "cannot find symbol" for Sorter (towards the bottom of code) which I realize is not imported so is there an easier way to get around this?</p> <pre><code>package sort; import java.awt.*; import javax.swing.*; import java.awt.event.*; public class AnimationTester implements ActionListener { private String algorithm="heap"; //Algoritm to sort by private int elements=20; //Number of elements to sort private int delay=20; //speed to sort at private Panel panel; //The display Panel private Thread t; //A Thread for running sorts /** * Creates an Animation Tester object and tells it to go. * This lets everything happen. * @param args The standard parameter * */ public static void main(String[] args) { (new AnimationTester()).go(); } /** * Launches the Sorting animation. * Creates a GUI */ private void go(){ JFrame frame = new JFrame("Sort Demo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); panel = new Panel(); frame.add(panel, BorderLayout.CENTER); frame.setSize(FRAME_WIDTH, FRAME_HEIGHT); // Where the GUI is created: JMenuBar menu; JMenu sort,num,delay; // Create the menu bar. menu = new JMenuBar(); // Build the first menu. sort = new JMenu("Algorithm"); sort.setMnemonic(KeyEvent.VK_A); sort.getAccessibleContext().setAccessibleDescription( "Choose an algorithm"); // a group of radio button menu items JRadioButtonMenuItem bubble = new JRadioButtonMenuItem("Bubble Sort"); bubble.setActionCommand("bubble"); JRadioButtonMenuItem merge = new JRadioButtonMenuItem("Merge Sort"); merge.setActionCommand("merge"); JRadioButtonMenuItem heap = new JRadioButtonMenuItem("Heap Sort"); heap.setActionCommand("heap"); heap.setSelected(true); JRadioButtonMenuItem insert = new JRadioButtonMenuItem("Insertion Sort"); insert.setActionCommand("insert"); JRadioButtonMenuItem quick = new JRadioButtonMenuItem("Quick Sort"); quick.setActionCommand("quick"); JRadioButtonMenuItem shell = new JRadioButtonMenuItem("Shell Sort"); shell.setActionCommand("shell"); JRadioButtonMenuItem selection = new JRadioButtonMenuItem("Selection Sort"); selection.setActionCommand("select"); //Group the radio buttons. ButtonGroup group1 = new ButtonGroup(); group1.add(bubble); group1.add(merge); group1.add(heap); group1.add(insert); group1.add(quick); group1.add(shell); group1.add(selection); sort.add(bubble); sort.add(merge); sort.add(heap); sort.add(insert); sort.add(quick); sort.add(shell); sort.add(selection); bubble.addActionListener(this); merge.addActionListener(this); heap.addActionListener(this); insert.addActionListener(this); quick.addActionListener(this); shell.addActionListener(this); selection.addActionListener(this); // Build second menu in the menu bar. num = new JMenu("Elements"); num.setMnemonic(KeyEvent.VK_S); num.getAccessibleContext().setAccessibleDescription( "How many elements?"); // a group of radio button menu items JRadioButtonMenuItem n10 = new JRadioButtonMenuItem("10"); n10.setActionCommand("10"); JRadioButtonMenuItem n20 = new JRadioButtonMenuItem("20"); n20.setActionCommand("20"); n20.setSelected(true); JRadioButtonMenuItem n30 = new JRadioButtonMenuItem("30"); n30.setActionCommand("30"); JRadioButtonMenuItem n50 = new JRadioButtonMenuItem("50"); n50.setActionCommand("50"); JRadioButtonMenuItem n100 = new JRadioButtonMenuItem("100"); n100.setActionCommand("100"); //Group the radio buttons. ButtonGroup group2 = new ButtonGroup(); group2.add(n10); group2.add(n20); group2.add(n30); group2.add(n50); group2.add(n100); num.add(n10); num.add(n20); num.add(n30); num.add(n50); num.add(n100); n10.addActionListener(this); n20.addActionListener(this); n30.addActionListener(this); n50.addActionListener(this); n100.addActionListener(this); // Build third menu in the menu bar. delay = new JMenu("Speed delay"); delay.setMnemonic(KeyEvent.VK_S); delay.getAccessibleContext().setAccessibleDescription( "How slow?"); // a group of radio button menu items JRadioButtonMenuItem s0 = new JRadioButtonMenuItem("0"); s0.setActionCommand("s000"); JRadioButtonMenuItem s20 = new JRadioButtonMenuItem("20"); s20.setActionCommand("s020"); s20.setSelected(true); JRadioButtonMenuItem s50 = new JRadioButtonMenuItem("50"); s50.setActionCommand("s050"); JRadioButtonMenuItem s100 = new JRadioButtonMenuItem("100"); s100.setActionCommand("s100"); JRadioButtonMenuItem s500 = new JRadioButtonMenuItem("500"); s500.setActionCommand("s500"); //Group the radio buttons. ButtonGroup group3 = new ButtonGroup(); group3.add(s0); group3.add(s20); group3.add(s50); group3.add(s100); group3.add(s500); delay.add(s0); delay.add(s20); delay.add(s50); delay.add(s100); delay.add(s500); s0.addActionListener(this); s20.addActionListener(this); s50.addActionListener(this); s100.addActionListener(this); s500.addActionListener(this); //add the menus to the Menubar menu.add(sort); menu.add(num); menu.add(delay); frame.setJMenuBar(menu); frame.setVisible(true); startSort(); } /** * Launches a sort. * If a sort is already in progress, does nothing. * */ private void startSort(){ //do not sort if already busy sorting. if(t!=null&amp;&amp;t.isAlive()) return; Double[] values = new Double[elements]; for (int i = 0; i &lt; values.length; i++) values[i] = new Double(Math.random() * panel.getHeight()); Runnable r = new Sorter(panel, values, algorithm, delay); t=new Thread(r); t.start(); } /** * Detects menu commands * @param e The event that occured */ public synchronized void actionPerformed(ActionEvent e){ String s=e.getActionCommand(); if(s=="bubble"||s=="merge"||s=="heap"|| s=="insert"||s=="quick"|| s=="shell"||s=="select"){ algorithm=s; startSort(); } if(s=="10"||s=="20"||s=="30"|| s=="50"||s=="100"){ elements=Integer.parseInt(s); startSort(); } if(s=="s000"||s=="s020"||s=="s050"|| s=="s100"||s=="s500"){ delay=Integer.parseInt(s.substring(1,4)); } } //private static final int VALUES_LENGTH = 30; private static final int FRAME_WIDTH = 400; private static final int FRAME_HEIGHT = 400; } </code></pre>
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    1. PTQuestion
    1. USman123456
    1. USman123456
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    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. CODo you have classes `ArrayComponent` and `Sorter` somewhere?
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      1. POUnknown Errors in my code
      1. USThilo
    2. COMake sure classes `ArrayComponent` and `Sorter` are in your class path
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      1. POUnknown Errors in my code
      1. USprasanth
    3. COCan you put your StackTrace .
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      1. POUnknown Errors in my code
      1. USSumit Singh
 

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