Java 爪哇：我能'；不能多次运行JTextArea吗？

大家好，欢迎大家，这是我的第一个问题，所以我希望这是一个好问题。我在探索swing API时遇到了一个突然出现在我脑海中的问题。我基本上是问自己是否可以构建一个可以使用

while（）

循环并在控制台中显示多个JTextArea的程序，如下所示：

while(x<100){
    System.out.println("This is the number: " + x)
    x++;
}

---

while（x欢迎阻塞事件调度线程

EDT负责处理重新绘制请求。您不应执行任何阻止EDT的操作，而应使用类似于
SwingWorker的工具

请查看以了解更多详细信息

用示例更新

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingWorker;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class TestTextArea03 {

    public static void main(String[] args) {
        new TestTextArea03();
    }

    public TestTextArea03() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                }

                JFrame frame = new JFrame("Test");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLayout(new BorderLayout());
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }

        });
    }

    public class TestPane extends JPanel {

        private JTextArea textArea;

        private TestPane() {
            setLayout(new BorderLayout());
            textArea = new JTextArea(10, 10);
            add(new JScrollPane(textArea));

            new TextWorker().execute();
        }

        public class TextWorker extends SwingWorker<Void, String> {

            @Override
            protected void process(List<String> chunks) {
                for (String text : chunks) {
                    textArea.append(text + "\n");
                }
            }

            @Override
            protected Void doInBackground() throws Exception {
                Thread.sleep(1000);
                for (int x = 0; x < 10; x++) {
                    publish(String.valueOf(x));
                    Thread.sleep(250);
                }
                return null;
            }

        }

    }

}

你的代码根本不引用JTextArea…你正在将所有组件添加到同一个位置…也许它们彼此重叠？我的错…我复制并粘贴了我正在试验的代码。我更新了它，它现在应该是一个JTextArea。或者
javax.swing.Timer
，例如。@Lonenebula说实话，谁知道呢，但是概念/要求记住：p谢谢你的快速回答。我在查看swing中的线程时了解了EDT。我了解到你不应该在其中执行太复杂的操作。我的代码的哪一部分确切地“阻止”了EDT。你确切地说“阻止”是什么意思？while循环
阻止了EDT。在方法退出之前，它阻止了EDT处理任何事件。非常感谢。我非常感谢。：）
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingWorker;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class TestTextArea03 {

    public static void main(String[] args) {
        new TestTextArea03();
    }

    public TestTextArea03() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                }

                JFrame frame = new JFrame("Test");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLayout(new BorderLayout());
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }

        });
    }

    public class TestPane extends JPanel {

        private JTextArea textArea;

        private TestPane() {
            setLayout(new BorderLayout());
            textArea = new JTextArea(10, 10);
            add(new JScrollPane(textArea));

            new TextWorker().execute();
        }

        public class TextWorker extends SwingWorker<Void, String> {

            @Override
            protected void process(List<String> chunks) {
                for (String text : chunks) {
                    textArea.append(text + "\n");
                }
            }

            @Override
            protected Void doInBackground() throws Exception {
                Thread.sleep(1000);
                for (int x = 0; x < 10; x++) {
                    publish(String.valueOf(x));
                    Thread.sleep(250);
                }
                return null;
            }

        }

    }

}

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingWorker;
import javax.swing.Timer;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class TestTextArea03 {

    public static void main(String[] args) {
        new TestTextArea03();
    }

    public TestTextArea03() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                }

                JFrame frame = new JFrame("Test");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLayout(new BorderLayout());
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }

        });
    }

    public class TestPane extends JPanel {

        private JTextArea textArea;
        private int x;

        private TestPane() {
            setLayout(new BorderLayout());
            textArea = new JTextArea(10, 10);
            add(new JScrollPane(textArea));

            Timer timer = new Timer(250, new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent e) {
                    x++;
                    textArea.append(String.valueOf(x) + "\n");
                }
            });
            timer.setRepeats(true);
            timer.setCoalesce(true);
            timer.start();
        }        
    }    
}