I would like to everytime I call System.out.println to append to a given JTextArea, without having to change all calls to System.out.println... Is this possible?
Thank you.
Versions of Java since 1.5 have System.setOut()
which allow you to install your own PrintStream
. Just create a simple OutputStream
which appends the data it get through write()
Then wrap it in a PrintStream
and install it.
那么你可以使用jTextArea.append("Your String")
方法来做到这一点
I don't think there is a simple way. I generally try to avoid System.out
calls in my code for exactly this sort of reason. If you have a method like (say) MyUtil.myOutput()
then you can make a single change and reroute it where you want
I suppose you could potentially use some form of AspectJ to do it, but I think that may be overkill. What I would do though is create a method that would both print and append.
public void printAndAppend(String text) {
System.out.println(text);
textArea.append(text);
}
You can then just do a global find and replace for System.out.println
and replace it with printAndAppend
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