[英]JColorChooser program giving 2 errors
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class JColorChooser extends JFrame implements ActionListener
{
JColorChooser()
{
setSize(500,500);
setLayout(new FlowLayout());
setDefaultCloseOperation(EXIT_ON_CLOSE);
JButton b=new JButton("color");
add(b);
b.addActionListener(this);
setVisible(true);
}
public void ActionPerformed(ActionEvent e)
{
Color initialcolor=Color.WHITE;
Color y=JColorChooser.showDialog(this,"Select a color",initialcolor);
setBackground(y);
}
public static void main(String args[])
{
JColorChooser x=new JColorChooser();
}
}
I am getting the following two errors: 我收到以下两个错误:
1.) 1.)
C:\Users\g0ku\Desktop\New folder\swing>javac JColorChooser.java
JColorChooser.java:5: error: JColorChooser is not abstract and does not override
abstract method actionPerformed(ActionEvent) in ActionListener
public class JColorChooser extends JFrame implements ActionListener
^
2.) 2.)
JColorChooser.java:21: error: cannot find symbol
Color y=JColorChooser.showDialog(this,"Select a color",initialcolor);
^
symbol: method showDialog(JColorChooser,String,Color)
location: class JColorChooser
2 errors
1. 1。
public void ActionPerformed(ActionEvent e)
needs to be 需要是
public void actionPerformed(ActionEvent e)
2. JFrame does not have a showDialog method. 2. JFrame没有showDialog方法。 My guess is you want this: 我的猜测是您想要这样:
JOptionPane.showInputDialog();
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