How to set a string's color [closed]

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囚心锁ツ

2021-02-02 14:58
Console

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.

GUI

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)
```
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后悔当初

2021-02-02 14:58

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.

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悲哀的现实

2021-02-02 15:07

setColor(). Assuming you use Graphics g in an AWT context.

Please refer to the documentation for additional information.

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野的像风

2021-02-02 15:08

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

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青春惊慌失措

2021-02-02 15:11
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.
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温柔的废话

2021-02-02 15:13

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 );
    }
}
}

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