问题编码简单文字处理器 [英] Problem coding simple word processor
问题描述
我正在制作一个简单的文字处理器。实际上找到了一个非常有用的教程,正在引导我完成它。我仍然需要做很多工作,但它为我开始奠定了坚实的基础。当我正在编写显示类时,我收到的错误是视频中的人没有得到。当我为按钮和滑块添加Action侦听器时,它给出了我的错误:AbstractButton类型中的方法addActionListener(ActionListener)不适用于
参数(显示)
以下是我所做的代码:
I'm working through making a simple word processor. Actually found a really helpful tutorial that is walking me through it. I'll still have to do quite a bit of work but it's giving me a solid foundation to start on. As I'm writing the display class, I'm getting an error that the guy in the video didn't get. When I add the Action listeners for the buttons and sliders, it gives me this error: The method addActionListener(ActionListener) in the type AbstractButton is not applicable for the
arguments (Display)
Here is the code I've done:
import java.awt.Color;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.JTextPane;
public class Display extends JPanel {
private JTextPane textArea;
private JButton saveButton;
private JComboBox colorCombo;
private JComboBox fontCombo;
private JLabel processorLabel;
private JSlider fontSize;
// Create some arrays
String[] colorItems = { "Red", "Blue", "Green", "Purple", "Orange", "Black" };
String[] fontItems = { "Monospaced", "Serif", "Sans Serif" };
public Display() {
init();
}
public void init() {
// Construct Components
textArea = new JTextPane();
saveButton = new JButton("Save");
colorCombo = new JComboBox(colorItems);
fontCombo = new JComboBox(fontItems);
processorLabel = new JLabel("Charles' Word Processor");
fontSize = new JSlider(10, 30);
// Work with slider
fontSize.setOrientation(JSlider.HORIZONTAL);
fontSize.setMinorTickSpacing(1);
fontSize.setMajorTickSpacing(5);
fontSize.setPaintTicks(true);
fontSize.setPaintLabels(true);
// Make the text area look presentable
textArea.setBackground(Color.LIGHT_GRAY);
// textArea.setForeground(color);
// Adjust size and layout
setPreferredSize(new Dimension(817, 473));
setLayout(null);
// Add components
add(textArea);
add(saveButton);
add(colorCombo);
add(fontCombo);
add(processorLabel);
add(fontSize);
// set boundaries
textArea.setBounds(10, 10, 650, 450);
saveButton.setBounds(670, 315, 140, 35);
colorCombo.setBounds(670, 205, 140, 35);
fontCombo.setBounds(670, 150, 140, 35);
processorLabel.setBounds(670, 20, 140, 35);
fontSize.setBounds(670, 95, 140, 49);
// add action listeners
saveButton.addActionListener(this);
colorCombo.addActionListener(this);
fontCombo.addActionListener(this);
}
public void actionPerformed(ActionEvent e) {
}
}
任何帮助将不胜感激。谢谢你们!
我尝试了什么:
我'我们尝试将this转换为动作监听器。没有工作
Any help would be greatly appreciated. Thank you guys!
What I have tried:
I've tried changing casting "this" to the action listener. Didn't work
推荐答案
好的,问题是我应该在类的顶部输入:
公共类显示扩展JPanel实现ActionListener {
这就是为什么当我在课堂上制作动作听众时它无法正常工作。
Okay so the problem was I should have typed at the top of the class:
public class Display extends JPanel implements ActionListener{
That's why it wasn't working when I made the action listeners later in the class.
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