我遇到了一个我一直在处理的错误，一段时间以来，错误是“构造函数 HangmanPanel() 未定义”，但我在 Hangman() 中定义了它..，我认为它可能希望我使用参数，但我不确定是哪些....
刽子手.java
import javax.swing.*;
public class Hangman extends JFrame{
private static final long serialVersionUID = -6224212014648478637L;
public static void main(String[] args){
new Hangman();
}
public Hangman() {
this.setSize(800, 500);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setTitle("Hangman Web App");
HangmanPanel panel = new HangmanPanel();
this.add(panel);
this.setVisible(true);
}
}
HangmanPanel.java
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
public class HangmanPanel extends JPanel {
static Boolean FOUND;
private static final long serialVersionUID = -5793357804828609325L;
public static String answerKey() {
//get random array element
String array[] = new String[10];
array[0] = "hamlet";
array[1] = "mysts of avalon";
array[2] = "the iliad";
array[3] = "tales from edger allan poe";
array[4] = "the children of hurin";
array[5] = "the red b" +
"+adge of courage";
array[6] = "of mice and men";
array[7] = "utopia";
array[8] = "chariots of the gods";
array[9] = "a brief history of time";
ArrayList<String> list = new ArrayList<String>(Arrays.asList(array));
Collections.shuffle(list);
String s = list.get(0);
return s;
}
public StringBuilder dashReplace(String s) {
//replace non-white space char with dashes and creates StringBuilder Object
String tW = s.replaceAll("\\S", "-");
System.out.print(tW + "\n");
StringBuilder AnswerKey = new StringBuilder(tW);
return AnswerKey;
}
public static int findAndReplace(String s, JLabel answerKey, String sc,
char ch) {
//find position of user input and replace
int pos = -1;
FOUND = false;
while(true){
pos = s.indexOf(sc, pos+1);
if(pos < 0){
break;
}else{
FOUND = true;
StringBuilder builder = new StringBuilder(answerKey.getText());
builder.setCharAt(pos, ch);
answerKey.setText(builder.toString());
}
}
JLabel AnswerKey2 = new JLabel(answerKey.toString());
return pos;
}
public HangmanPanel(final String s){
this.setLayout(null);
JLabel heading = new JLabel("Welcome to the Hangman App");
JButton Button = new JButton("Ok");
//get input
JLabel tfLable = new JLabel("Please Enter a Letter:");
final JLabel AnswerKey = new JLabel(dashReplace(answerKey()).toString());
final JTextField text = new JTextField(10);
heading.setSize(200, 50);
tfLable.setSize(150, 50);
text.setSize(50, 30);
Button.setSize(60, 20);
AnswerKey.setSize(200, 100);
heading.setLocation(300, 10);
tfLable.setLocation(50, 40);
text.setLocation(50, 80);
Button.setLocation(100, 85);
AnswerKey.setLocation(100,85);
this.add(heading);
this.add(tfLable);
this.add(text);
this.add(Button);
this.add(AnswerKey);
Button.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// can't access text
String sc = text.getText();
char ch = sc.charAt(0);
findAndReplace(s, AnswerKey, sc, ch);
}
});
}
}