How Can I Add Color to My Console Output Using ANSI Escape Codes?-javaTutorial-php.cn

How Can I Add Color to My Console Output Using ANSI Escape Codes?

Susan Sarandon

Release： 2024-12-17 08:40:25

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How Can I Add Color to My Console Output Using ANSI Escape Codes?

Colorized Console Output with ANSI Escape Codes

Console output can be enhanced with colors to improve readability and highlight important data. ANSI escape codes provide a straightforward approach to achieve this if your terminal supports them.

Defining Color Constants

Create constants representing different colors, as demonstrated below:

public static final String ANSI_RESET = "\u001B[0m";
public static final String ANSI_BLACK = "\u001B[30m";
public static final String ANSI_RED = "\u001B[31m";
public static final String ANSI_GREEN = "\u001B[32m";
public static final String ANSI_YELLOW = "\u001B[33m";
public static final String ANSI_BLUE = "\u001B[34m";
public static final String ANSI_PURPLE = "\u001B[35m";
public static final String ANSI_CYAN = "\u001B[36m";
public static final String ANSI_WHITE = "\u001B[37m";

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Usage

Use the color constants to add color to your text output, as exemplified by the following code:

System.out.println(ANSI_RED + "This text is red!" + ANSI_RESET);

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This will print the message "This text is red!" in red on supported terminals.

Background Coloring

In addition to text color, you can also modify the background color using similar constants:

public static final String ANSI_BLACK_BACKGROUND = "\u001B[40m";
public static final String ANSI_RED_BACKGROUND = "\u001B[41m";
...
public static final String ANSI_WHITE_BACKGROUND = "\u001B[47m";

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Example Output

Here's an example of using both text and background colors:

System.out.println(ANSI_GREEN_BACKGROUND + "This text has a green background but default text!" + ANSI_RESET);
System.out.println(ANSI_RED + "This text has red text but a default background!" + ANSI_RESET);
System.out.println(ANSI_GREEN_BACKGROUND + ANSI_RED + "This text has a green background and red text!" + ANSI_RESET);

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This will produce output with text in different colors and backgrounds, enhancing the overall readability of your console output.

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