我的代码中的未知错误

Question

我运行此代码时遇到三个错误，但不知道它们是什么，因为这是由骨架代码提供的。我会发布代码，也许有人可以帮助我。这可能是一个缺少的库或简单的东西，但我会很感激有人帮助。错误是说“找不到符号”的Sorter（朝向代码底部），我意识到这是不导入的，所以有更简单的方法来解决这个问题吗？

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&&t.isAlive()) return; 
    Double[] values = new Double[elements]; 
    for (int i = 0; i < 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; 
} 

Answer 1

您好我检查你的代码，发现无论ArrayComponent也不分拣机在你的类是进口的。即使你已经在你的类路径中包含他们

，直到他们在同一个包，因为这他们不会被隐式导入。

使用import语句作为

import ArrayComponent ; 
import Sorter; 

那么它必须努力