Swing文本字段中的延迟文本颜色更改 [英] Delayed text color change in Swing text field

问题描述

是否可以更改文本字段中文本的颜色？我正在尝试构建一个解释器，所以我想知道如何实时更改文本的颜色。
例如我在文本字段中输入的单词是：

Is it possible to change the color of a text in a text field?I am trying to build an interpreter, so I was wondering on how would you change the color of the text in real time. For example the word I enter in the text field is:

printf("hi");

单词 printf 在几个之后变为绿色秒。

The word printf becomes green after a few seconds.

有可能吗？

推荐答案

package test;

import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.Timer;

public class BlinkColorTextField {

    BlinkColorTextField() {
        final JTextField blinkingText = new JTextField("Red & Blue");
        ActionListener blinker = new ActionListener() {
            boolean isRed = true;
            public void actionPerformed(ActionEvent ae) {
                if (isRed) {
                    blinkingText.setForeground(Color.BLUE);
                } else {
                    blinkingText.setForeground(Color.RED);
                }
                isRed = !isRed;
            }
        };
        Timer timer = new Timer(1000, blinker);
        timer.start();
        JOptionPane.showMessageDialog(null, blinkingText);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable(){
            public void run() {
                new BlinkColorTextField();
            }
        });
    }

}

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