Does anyone know how I would set the color of a string that will be printed using System.out?
This is the code I currently have:
System.out.println("TEXT THAT NEEDS TO BE A DIFFERENT COLOR.");
This question is related to
java
colors
system.out
See the Wikipedia page on ANSI escapes for the full collection of sequences, including the colors.
But for one simple example (Printing in red) in Java (as you tagged this as Java) do:
System.out.println("\u001B31;1mhello world!");
The 3 indicates change color, the first 1 indicates red (green would be 2) and the second 1 indicates do it in "bright" mode.
However, if you want to print to a GUI the easiest way is to use html:
JEditorPane pane = new new JEditorPane();
pane.setText("<html><font color=\"red\">hello world!</font></html>");
For more details on this sort of thing, see the Swing Tutorial. It is also possible by using styles in a JTextPane. Here is a helpful example of code to do this easily with a JTextPane (added from helpful comment).
JTextArea is a single coloured Text component, as described here. It can only display in one color. You can set the color for the whole JTextArea like this:
JTextArea area = new JTextArea("hello world");
area.setForeground(Color.red)
If you're printing to stdout, it depends on the terminal you're printing to. You can use ansi escape codes on xterms and other similar terminal emulators. Here's a bash code snippet that will print all 255 colors supported by xterm, putty and Konsole:
for ((i=0;i<256;i++)); do echo -en "\e[38;5;"$i"m"$i" "; done
You can use these escape codes in any programming language. It's better to rely on a library that will decide which codes to use depending on architecture and the content of the TERM environment variable.
Download jansi-1.4.jar and Set classpath and Try This code 100% working :
import org.fusesource.jansi.AnsiConsole;
import static org.fusesource.jansi.Ansi.*;
import static org.fusesource.jansi.Ansi.Color.*;
public class SampleColour
{
public static void main(String[] args)
{
AnsiConsole.systemInstall();
System.out.println(ansi().fg(RED).a("Hello World").reset());
System.out.println("My Name is Raman");
AnsiConsole.systemUninstall();
}
}
I created an API called JCDP, former JPrinter, which stands for Java Colored Debug Printer. For Linux it uses the ANSI escape codes that WhiteFang mentioned, but abstracts them using words instead of codes which is much more intuitive. For Windows it actually includes the JAnsi library but creates an abstraction layer over it, maintaining the intuitive and simple interface created for Linux.
This library is licensed under the MIT License so feel free to use it.
Have a look at JCDP's github repository.
Strings don't encapsulate color information. Are you thinking of setting the color in a console or in the GUI?
for linux (bash) following code works for me:
System.out.print("\033[31mERROR \033[0m");
the \033[31m will switch the color to red and \033[0m will switch it back to normal.
Google aparently has a library for this sort of thing: http://code.google.com/p/jlibs/wiki/AnsiColoring
There's also a Javaworld article on this which solves your problem: http://www.javaworld.com/javaworld/javaqa/2002-12/02-qa-1220-console.html
setColor(). Assuming you use Graphics g in an AWT context.
Please refer to the documentation for additional information.
public class colorString
{
public static void main( String[] args )
{
new colorString();
}
public colorString( )
{
kFrame f = new kFrame();
f.setSize( 400, 400 );
f.setVisible( true );
}
private static class kFrame extends JFrame
{
@Override
public void paint(Graphics g)
{
super.paint( g );
Graphics2D g2d = (Graphics2D)g;
g2d.setColor( new Color(255, 0, 0) );
g2d.drawString("red red red red red", 100, 100 );
}
}
}
Source: Stackoverflow.com