JTextArea显示文本和字符串

Question

I have a JTextArea and would like to be able to add multiple arguments to like so: messageArea.setText("Hi", name, "how are you today?"); However, I am unable to do so, I do not know how to add multiple arguments to the JTextArea.

Answer 1

The setText() method takes a single String argument, so you have to concatenate the strings, you want to display.

StringBuilder sb = new StringBuilder();
sb.append("Hi").append(name).append(", how are you?");
messageArea.setText(sb.toString());

Other method is to simply use the + operator:

messageArea.setText("Hi"+name+"...");

Or use the MessageFormat class:

messageArea.setText(MessageFormat.format("Hi {0} how are you?", name));