Java控制台JPanel [英] Java Console JPanel

问题描述

Hello
是否可以在JPanel中绘制java控制台返回的内容？
有你的教程吗？
谢谢
sw

Hello Is it possible to draw in a JPanel what the java console is returning ? have you got a tutorial to follow ? thanks sw

推荐答案

我不记得我在哪里找到了这个，使用类I调用TextAreaOutputStream将输出流输出到JPanel中保存的JTextArea：

I can't remember where I found this, but I have outputted the output stream to a JTextArea held in a JPanel using a class I call TextAreaOutputStream:

import java.io.IOException;
import java.io.OutputStream;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;

public class TextAreaOutputStream extends OutputStream {

    private final JTextArea textArea;
    private final StringBuilder sb = new StringBuilder();
    private String title;

    public TextAreaOutputStream(final JTextArea textArea, String title) {
        this.textArea = textArea;
        this.title = title;
        sb.append(title + "> ");
    }

    @Override
    public void flush() {
    }

    @Override
    public void close() {
    }

    @Override
    public void write(int b) throws IOException {

        if (b == '\r')
            return;

        if (b == '\n') {
            final String text = sb.toString() + "\n";
            SwingUtilities.invokeLater(new Runnable() {
                public void run() {
                    textArea.append(text);
                }
            });
            sb.setLength(0);
            sb.append(title).append("> ");
        }

        sb.append((char) b);
    }
}

然后我将标准输出流重定向到此对象作为亚历克斯在他的回答上面提到。

I then re-direct the standard output Stream to this object as Alex mentions in his answer above.

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