Question

java fx的新手。我的问题是，有没有办法让我通过System.out打印的所有文字进入文本区域？我应该将所有打印件放入一个方法中，还是必须将each one传递给textarea？

Answer 1

您可以更改输出流，请遵循以下代码：

    TextArea ta = new TextArea();
    Scene scene = new Scene(ta);

    System.setOut(new PrintStream(new OutputStream() {

        @Override
        public void write(int b) throws IOException {
            ta.appendText("" + ((char)b));
        }

        @Override
        public void write(byte[] b) throws IOException {
            ta.appendText(new String(b));
        }

        @Override
        public void write(byte[] b, int off, int len) throws IOException {
            ta.appendText(new String(b, off, len));
        }
    }));

    stage.setScene(scene);
    stage.show();
    System.out.println("THIS WILL BE WRITEN INSIDE THE TEXT AREA!");

Java fx打印文本

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